Questions
Instructions:To make sure you have all the data you need to calculate the effect size, here...

Instructions:To make sure you have all the data you need to calculate the effect size, here are the means and standard deviations for the "hit" and "smashed into" groups from last week.

Group Responses to Car Speed Hit v. Smashed

Hit Group

Smashed Into Group

32

50

26

44

40

54

23

45

42

44

20

40

37

49

25

34

24

38

22

30

19

50

24

46

19

40

22

35

29

43

24

41

34

30

33

39

37

44

20

35

Group #1: Smashed into mean and SD: Mean = 41.55, Variance = 44.15, SD = 6.64

Group #2: Hit mean and SD:   M = 27.6, Variance = 53.94, SD = 7.34

1) Compute the effect size (Cohen’s d using the pooled variance). Which of the following is the effect size? Round 2 decimal points.

Group of answer choices

A. Cohen’s d =1.99

B. Cohen’s d =2.13

C. Cohen’s d =1.12

D. Cohen’s d =2.10

2) What does the pooled Cohen’s d you obtained using the coin study data represent?

A. A small/weak effect

B. No effect

C. A medium/moderate effect

D. A large effect

3) What is the effect size and why do we report it?

4) When is it appropriate to use a dependent samples t-Test?

A. Participants are of different gender

B. Participants are recruited after completing a screening questionnaire

C. Participants are randomly assigned to a group

D. Participants provide more than one score or they are matched

5) Results Section write up: Cognitive ability of participants before and after participants consumed alcohol was recorded. Results showed a significant difference in cognitive ability before and after alcohol consumption, t(28) = 4.89, p < .01. Participants had higher scores on the cognitive task before they consumed alcohol (M = 4.55, SD = 1.11) than after (M = 2.22, SD = .09).

Using the write up of the results section from an APA empirical research article, identify which test was conducted?

A. Pearson correlation

B. Independent sample t-test

C. Dependent sample t-test

D. z-test

6) Results Section write up: Differences between treatment and control groups were tested. Results showed a significant difference between groups, t(38) = 3.45, p < .01. Participants in the treatment condition, who received study materials, had significantly higher GRE scores (M = 4.55, SD = 1.11) than participants in the control condition, who did not receive study materials (M = 2.22, SD = .09).

Using the write up of the results section from an APA empirical research article, identify which test was conducted?

A. Pearson correlation

B. Independent sample t-test

C. Dependent sample t-test

D. z-test

In: Statistics and Probability

For the rest of the lab, you will make the assumption that your data is approximately...

For the rest of the lab, you will make the assumption that your data is approximately normally distributed. Use Excel to answer the following questions for the Net Sales data. Copy and paste the output below, don’t include as a separate file, make sure your x axis is labelled properly. You will have to “insert” your graphs in the appropriate places below. Please don’t upload more than one file for me to open and grade, your entire lab should be in ONE uploaded file. If you can’t do that, then print out the separate files and then scan it in as one file, but you should be able to figure out how to copy and paste all your answers into one document.

Locate your middle x value (M) and your highest x value (H) on the axis.

Shade the area between x=M and x=H.

Find the value of the shaded area under the curve. In other words, what is P(M< x<H)?

Row Items Sales Card Type Gender Country Age Martial Status
1 19 $50.61 visa-electron Male China 35 2
2 14 $105.37 mastercard Female China 22 2
3 11 $90.21 maestro Female Russia 52 2
4 20 $280.84 visa Male China 38 1
5 18 $265.68 jcb Male China 44 1
6 19 $103.63 americanexpress Female Indonesia 56 2
7 17 $215.00 jcb Male Dominican Republic 51 1
8 20 $168.06 laser Male Czech Republic 25 1
9 3 $181.42 maestro Female China 41 1
10 11 $240.51 mastercard Female China 44 1
11 17 $260.56 jcb Male China 58 1
12 17 $170.56 jcb Female Belarus 28 2
13 14 $71.42 diners-club-carte-blanche Male Sweden 41 1
14 3 $242.23 diners-club-carte-blanche Female Indonesia 58 2
15 15 $250.44 visa-electron Male Latvia 41 2
16 4 $71.80 jcb Male New Zealand 20 2
17 6 $33.62 diners-club-us-ca Male United States 48 2
18 17 $81.35 diners-club-enroute Female Colombia 44 2
19 13 $67.09 maestro Male China 53 1
20 3 $262.41 jcb Female Lithuania 22 1
21 16 $204.28 jcb Female Indonesia 23 2
22 2 $289.74 jcb Female Vietnam 28 2
23 1 $33.45 china-unionpay Male China 29 2
24 19 $154.19 jcb Female Botswana 46 2
25 20 $43.29 diners-club-enroute Male Argentina 58 2
26 5 $96.97 jcb Male Russia 42 2
27 1 $46.62 jcb Male Ecuador 21 2
28 17 $241.04 jcb Male China 41 1
29 6 $251.64 switch Female Sudan 58 1
30 1 $115.24 visa-electron Female Canada 52 1
31 10 $263.42 jcb Male France 44 2
32 10 $274.67 jcb Female Italy 32 2
33 1 $69.59 jcb Female Switzerland 48 2
34 17 $136.30 china-unionpay Male China 44 2
35 7 $201.52 jcb Male Macedonia 26 2
36 8 $51.44 switch Female Papua New Guinea 51 1
37 11 $52.95 jcb Male Czech Republic 48 2
38 19 $162.89 china-unionpay Female China 36 2
39 5 $160.09 jcb Female China 38 1
40 6 $91.28 jcb Female Brazil 39 1
41 4 $140.53 mastercard Female Indonesia 26 2
42 15 $190.36 visa Male Greece 57 1
43 10 $181.57 americanexpress Male Philippines 46 2
44 1 $65.59 jcb Female China 31 1
45 3 $49.01 laser Female United States 49 2
46 16 $88.05 jcb Female France 54 2
47 9 $193.79 jcb Male Indonesia 38 1
48 5 $39.55 mastercard Female Indonesia 24 2
49 1 $32.56 jcb Male Japan 23 1
50 2 $54.52 china-unionpay Male Ireland 43 1
51 19 $161.89 jcb Male China 57 1
52 2 $59.63 maestro Male Cyprus 35 1
53 13 $257.81 bankcard Male China 38 1
54 15 $166.53 laser Male South Africa 50 1
55 15 $253.02 diners-club-carte-blanche Female Canada 39 2
56 16 $193.56 americanexpress Female China 30 2
57 18 $80.57 china-unionpay Male Brazil 30 1
58 18 $250.29 jcb Male Yemen 41 1
59 15 $46.79 jcb Female Japan 42 1
60 18 $276.56 laser Male Slovenia 32 2
61 14 $135.13 jcb Male Tanzania 31 1
62 14 $195.58 jcb Female China 42 1
63 15 $182.98 visa Female China 52 2
64 8 $221.03 jcb Male Zimbabwe 29 1
65 3 $128.11 jcb Female China 40 1
66 19 $76.60 diners-club-carte-blanche Female Indonesia 38 1
67 13 $27.07 jcb Female China 59 2
68 4 $109.20 diners-club-carte-blanche Male Russia 48 2
69 4 $276.85 jcb Male Uruguay 57 2
70 19 $195.10 jcb Male Sao Tome and Principe 25 1
71 5 $112.23 instapayment Male Zambia 41 1
72 15 $61.94 jcb Female Nigeria 41 1
73 4 $35.08 jcb Female China 35 2
74 20 $60.13 switch Male China 23 2
75 6 $277.11 visa-electron Female Portugal 54 2
76 5 $220.47 jcb Female Russia 37 2
77 14 $185.57 laser Male Russia 53 2
78 19 $295.96 diners-club-enroute Male Greece 51 1
79 12 $238.86 visa Female Indonesia 45 2
80 3 $275.81 visa-electron Female Indonesia 26 2
81 7 $77.07 visa Female Portugal 57 1
82 2 $252.58 mastercard Female Russia 45 2
83 4 $134.78 jcb Male Japan 29 1
84 3 $43.49 americanexpress Male Indonesia 48 2
85 1 $223.78 jcb Male Mexico 53 2
86 8 $238.74 jcb Female China 28 2
87 9 $291.30 americanexpress Male Togo 44 1
88 14 $79.46 jcb Female Finland 54 2
89 16 $193.73 jcb Male Indonesia 57 1
90 13 $224.23 visa-electron Female Pakistan 23 2
91 16 $247.43 mastercard Female Honduras 27 1
92 9 $186.11 jcb Male China 56 2
93 17 $58.48 jcb Male China 53 2
94 1 $281.40 jcb Female Philippines 46 2
95 10 $254.37 bankcard Male Brazil 42 1
96 8 $145.00 jcb Female Indonesia 50 2
97 20 $122.35 jcb Female Sweden 25 2
98 1 $210.77 jcb Male Portugal 50 1
99 7 $225.37 diners-club-carte-blanche Female South Africa 43 2
100 18 $87.98 maestro Male China 37 2

In: Statistics and Probability

A bag contains three red marbles, three green ones, one lavender one, two yellows, and one...

A bag contains three red marbles, three green ones, one lavender one, two yellows, and one orange marble. HINT [See Example 7.]

How many sets of five marbles include at least two red ones?

In: Advanced Math

Thanks to acquisition of a key patent, your company now hasexclusive production rights for barkelgassers...

Thanks to acquisition of a key patent, your company now has exclusive production rights for barkelgassers (BGs) in North America. Production facilities for 220,000 BGs per year will require a $24.5 million immediate capital expenditure. Production costs are estimated at $79 per BG. The BG marketing manager is confident that all 220,000 units can be sold for $114 per unit (in real terms) until the patent runs out five years hence. After that, the marketing manager hasn’t a clue about what the selling price will be. Assume the real cost of capital is 12%. To keep things simple, also make the following assumptions:

  • The technology for making BGs will not change. Capital and production costs will stay the same in real terms.

  • Competitors know the technology and can enter as soon as the patent expires, that is, they can construct new plants in year 5 and start selling BGs in year 6.

  • If your company invests immediately, full production begins after 12 months, that is, in year 1. (Assume it takes all firms one year to achieve full production.)

  • There are no taxes.

  • BG production facilities last 12 years. They have no salvage value at the end of their useful life.

What is the NPV of the BG project? (Do not round intermediate calculations. Enter your answer in millions rounded to 2 decimal places.)



In: Finance

Hello, I am in need of some assistance in interpreting the data for the two variables...

Hello,

I am in need of some assistance in interpreting the data for the two variables I did in a t-test for in Excel. Variable 1 is Relationship with Direct Supervisor and Variable 2 is the Workplace Happiness Rating. I am supposed to write a 125- to 175-word summary of my interpretation of the results of the t test.

t-Test: Two-Sample Assuming Equal Variances
Variable 1 Variable 2
Mean 2.5 7.4
Variance 1.030612245 2
Observations 50 50
Pooled Variance 1.515306122
Hypothesized Mean Difference 0
df 98
t Stat -19.90287866
P(T<=t) one-tail 1.67192E-36
t Critical one-tail 1.660551217
P(T<=t) two-tail 3.34383E-36
t Critical two-tail 1.984467455

In: Statistics and Probability

A) The present value of $45,000 to be received in one year, at 6% compounded annually,...

A) The present value of $45,000 to be received in one year, at 6% compounded annually, is (rounded to nearest dollar) ______ .
Use the present value table in Exhibit 8.

a.$42,056

b.$45,000

c.$42,453

d.$40,179

B) Balance sheet and income statement data indicate the following:

Bonds payable, 7% (due in 15 years) $1,344,009
Preferred 8% stock, $100 par
    (no change during the year) $200,000
Common stock, $50 par
    (no change during the year) $1,000,000
Income before income tax for year $444,339
Income tax for year $133,302
Common dividends paid $60,000
Preferred dividends paid $16,000

Based on the data presented above, what is the times interest earned ratio (round to two decimal places)?

a.5.72

b.4.72

c.2.31

d.3.31

C) On January 1 of the current year, Barton Corporation issued 7% bonds with a face value of $119,000. The bonds are sold for $113,050. The bonds pay interest semiannually on June 30 and December 31, and the maturity date is December 31, five years from now. Barton records straight-line amortization of the bond discount. The bond interest expense for the year ended December 31 is

a.$10,115

b.$595

c.$4,165

d.$9,520

In: Accounting

Adventure Expeditions offers guided back-country hiking tours. Adventure Expeditions provides a guide and all necessary food...

Adventure Expeditions offers guided back-country hiking tours. Adventure Expeditions provides a guide and all necessary food and equipment at a fee of $50 per person per day. Adventure Expeditions currently provides an average of 600 guide-days per month in June, July, August, and September. Based on available equipment and staff, maximum capacity is 800 guide-days per month. Monthly variable and fixed operating costs.

Variable costs per guide-day

Fixed costs per month

Food

$ 5

Equipment rental

$5,000

Guide Salary

25

Administration

5,000

Supplies

2

Advertising

2,000

Insurance

8

Total

$40

Total

$12,000

Determine the effect of each of the following situations on monthly profits. Each situation is to be evaluated independently of all others.

  1. A $12 increase in the daily fee should result in a 150-unit decrease in monthly sales.
  2. A $7 decrease in the daily fee should result in a 300-unit increase in monthly sales. However, because of capacity constraints, the last 100 guide-days would be provided by subcontracting to another firm at a cost of $46 per guide-day.
  3. A tour agency has proposed to place a special, one-time order for 75 guide-days at a reduced fee of $45 per guide-day. The agency would pay all insurance costs. There would be additional fixed administration costs of $200.

In: Accounting

The following table gives the price (in dollars), weight (in pounds), amps, and maximum cutting depth...

The following table gives the price (in dollars), weight (in pounds), amps, and maximum cutting depth (in inches) for a collection of 19 circular saws.

Price Weight Amps Depth

150

 11 15 2.4
110 12 15 2.2
130 11 15 2.4
150 11 15 2.3
140 12 15 2.4
100 11 15 2.4
150 13 15 2.5
90 9 10 2.5
140 11 15 2.4
110 12 15 2.4
70 12 14 2.4
30 10 10 2.5
80 12 13 2.4
50 11 13 2.4
80 13 14 2.4
30 10 12 2.5
50 11 12 2.5
45 11 12 2.5
40 10 12 2.4

1.Make a prediction about the impact of each independent variable on the dependent variable.

2.Use graphical summaries to examine the relationship between each pair of variables. What do you see? Are there any unusual observations or outliers? Does the data support your predictions?

3.Write the regression equation.

4. Estimate the regression model. Interpret the estimated coefficients.

5. Predict the price of a circular saw that weighs 10 pounds, uses 12 amps of current, and has a maximum cutting depth of 2.5 inches.

6. Describe the fit of the model.

7. Find the residuals for the regression.

8. Test whether or not the coefficients are jointly significant. Be sure to set up the hypothesis, the decision rule, and the conclusion.

9.Test whether or not the price is significantly impacted by amps. Be sure to set up the hypothesis, the decision rule, and the conclusion.

In: Economics

You are choosing between two projects. The cash flows for the projects are given in the...

You are choosing between two projects. The cash flows for the projects are given in the following table​ ($ million):

Project

Year 0

Year 1

Year 2

Year 3

Year 4

A

negative $ 50−$50

$ 23$23

$ 18$18

$ 22$22

$ 14$14

B

negative $ 100−$100

$ 18$18

$ 41$41

$ 48$48

$ 62$62

a. What are the IRRs of the two​ projects?

b. If your discount rate is 4.9 %​, what are the NPVs of the two​ projects?

c. Why do IRR and NPV rank the two projects​ differently?

a. What are the IRRs of the two​ projects?

The IRR for project A is ___​%.

​(Round to one decimal​ place.)

In: Finance

Contrasting the Independent and Dependent Tests In a brief paragraph, discuss your reasoning for any differences...

Contrasting the Independent and Dependent Tests

In a brief paragraph, discuss your reasoning for any differences between the two tests in the seven-step process.

In: Math