Questions
*tables and figures are listed by page number and are included in the table of contents...

*tables and figures are listed by page number and are included in the table of contents TRUE OR FALSE
*WHICH OF THE FOLLOWING IS CORRECT IN TERMS OF APA NUMBER STYLE?
a) 1950's b) ten-thousand c) 10 and 20's d) both a and c
*when quoting, always provide the author's names, year, complete reference in the reference list, and___________
a) month of publication B) chapter number c)specific page citation d) all the above
*which of the following sentences is the correct format for subsequent references to the same study according to the 6th edition of the APA guide?
a) standard deviations typically exceed 1.56 ( see table 2 of Smith, 2003, for complete data).
b) survey results were mostly inconclusive with regard to job site application rates (see figure 12 of Johnson, [2005], for complete data).
c) both A and B are incorrect
d) both A and B are correct
*if a quote is equal or longer than ______ words, a block format should be used
a) 20 b) 25 c) 40 d) 15

In: Math

Refwr to the accompanying data display that results from a sample of aurport data spoeds in...

Refwr to the accompanying data display that results from a sample of aurport data spoeds in Mbps.
TInterval
(13.046,22.15)
x(bar)=17.598
Sx=16.01712719
n=50

A) What is the number of degrees of freedom that should be used for finding the critical value t (sub alpha/2)?
df=

B) Find the critical value t (sub alpha/2) corresponding to a 95% confidence level?
t(sub alpha/2)=

In: Math

If you have a chance please answer as many as possible, thank you and I really...

If you have a chance please answer as many as possible, thank you and I really appreciate your help experts!

Question 6 2 pts

A scientist claims that the mean gestation period for a fox is 51.5 weeks. If a hypothesis test is performed that rejects the null hypothesis, how would this decision be interpreted?

The evidence indicates that the gestation period is less than 51.5 weeks
There is enough evidence to support the scientist’s claim that the gestation period is 51.5 weeks
There is not enough evidence to support the scientist’s claim that the gestation period is 51.5 weeks
There is not enough evidence to support the scientist’s claim that the gestation period is more than 51.5 weeks

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Question 7 2 pts

A marketing organization claims that less than 15% of its employees are paid minimum wage. If a hypothesis test is performed that fails to reject the null hypothesis, how would this decision be interpreted?

There is sufficient evidence to support the claim that less than 15% of the employees are paid minimum wage
There is not sufficient evidence to support the claim that less than 15% of the employees are paid minimum wage
There is not sufficient evidence to support the claim that more than 15% of the employees are paid minimum wage
There is sufficient evidence to support the claim that 15% of the employees are paid minimum wage

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Question 8 2 pts

A sprinkler manufacturer claims that the average activating temperatures is at least 132 degrees. To test this claim, you randomly select a sample of 32 systems and find the mean activation temperature to be 133 degrees. Assume the population standard deviation is 3.3 degrees. Find the standardized test statistic and the corresponding p-value.

z-test statistic = -1.71, p-value = 0.0865
z-test statistic = 1.71, p-value = 0.0865
z-test statistic = -1.71, p-value = 0.0432
z-test statistic = 1.71, p-value = 0.0432

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Question 9 2 pts

A consumer group claims that the mean acceleration time from 0 to 60 miles per hour for a sedan is 7.0 seconds. A random sample of 33 sedans has a mean acceleration time from 0 to 60 miles per hour of 7.6 seconds. Assume the population standard deviation is 2.3 seconds. Find the standardized test statistic and the corresponding p-value.

z-test statistic = -1.499, p-value = 0.067
z-test statistic = -1.499, p-value = 0.134
z-test statistic = 1.499, p-value = 0.067
z-test statistic = 1.499, p-value = 0.134

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Question 10 2 pts

A consumer research organization states that the mean caffeine content per 12-ounce bottle of a population of caffeinated soft drinks is 37.8 milligrams. You find a random sample of 48 12-ounce bottles of caffeinated soft drinks that has a mean caffeine content of 35.2 milligrams. Assume the population standard deviation is 12.5 milligrams. At α=0.05, do you support or reject the organization’s claim using the test statistic?

Claim is null, reject the null and reject claim as test statistic (-1.44) is in the rejection region defined by the critical value (-1.96)
Claim is alternative, fail to reject the null and support claim as test statistic (-1.44) is not in the rejection region defined by the critical value (-1.64)
Claim is alternative, reject the null and reject claim as test statistic (-1.44) is in the rejection region defined by the critical value (-1.64)
Claim is null, fail to reject the null and support claim as test statistic (-1.44) is not in the rejection region defined by the critical value (-1.96)

In: Math

Researchers in mental health fields are often interested in evaluating the effectiveness of using food images...

Researchers in mental health fields are often interested in evaluating the effectiveness of using food images to enhance positive mood. Adapting a typical design from such studies, suppose we have participants rate their mood change on a standard self-report affect scale after viewing images of "comfort" foods, fruits/vegetables (F/V), and random non-food images (used as a control group). The results are given in the table at right for this hypothetical study.

Images
Control F/V Comfort
Foods
0 0 3
1 1 2
1 2 3
3 3 5
0 1 0

(a) Complete the F-table. (Round your answers to two decimal places.)

Source of
Variation
SS df MS Fobt
Between
groups
Between
persons
  
Within
groups (error)
  
Total      


(b) Compute a Bonferroni procedure and interpret the results. (Assume experimentwise alpha equal to 0.05. Select all that apply.)

There were no significant differences between any of the groups.Participants rated a significantly larger mood change after viewing images of fruits/vegetables compared with the mood change after viewing control images.Participants rated a significantly larger mood change after viewing images of comfort foods compared with the mood change after viewing images of fruits/vegetables.Participants rated a significantly larger mood change after viewing images of comfort foods compared with the mood change after viewing control images.


In: Math

Twenty five high school students complete a preparation program for taking the SAT test. Here are...

Twenty five high school students complete a preparation program for taking the SAT test. Here are the SAT scores from the 25 students who completed the SAT prep program: 434 694 457 534 720 400 484 478 610 641 425 636 454 514 563 370 499 640 501 625 612 471 598 509 531 The mean of these scores is 536.00. We know that the population average for SAT scores is 500 with a standard deviation of 100. The question is, are these students’ SAT scores significantly greater than a population mean of 500 with a population standard deviation of 100 ? Note that the the maker of the SAT prep program claims that it will increase (and not decrease) your SAT score. So, you would be justified in conducting a one-directional test. (alpha = .05).

Choose between

A - The prep program didn't result in significant improvement in SAT scores

B- The prep program resulted in significant improvement in SAT scores

In: Math

The Kroger Company is one of the largest grocery retailers in the United States, with over...

The Kroger Company is one of the largest grocery retailers in the United States, with over 2,000 grocery stores across the country. Kroger uses an online customer opinion questionnaire to obtain performance data about its products and services and learn about what motivates its customers.† In the survey, Kroger customers were asked if they would be willing to pay more for products that had each of the following four characteristics. The four questions were: Would you pay more for

    products that have a brand name?

    products that are environmentally friendly?

    products that are organic?

    products that have been recommended by others?

For each question, the customers had the option of responding Yes if they would pay more or No if they would not pay more.

(a)

Are the data collected by Kroger in this example categorical or quantitative?

categorical quantitative     Correct: Your answer is correct.

(b)

What measurement scale is used?

ratio scale interval scale     ordinal scale nominal scale

In: Math

What is the Central Limit Theorem? Discuss an example of its application. What is meant by...

What is the Central Limit Theorem? Discuss an example of its application.

What is meant by sampling distribution of the sample proportion?

What are confidence intervals?

How do you construct confidence intervals?

In: Math

A group of participants was surveyed and the information collected shown in the partially completed contingency...

A group of participants was surveyed and the information collected shown in the partially completed contingency table below regarding gender and the attitudes on abortion. Firstly, calculate the missing values.

Support Oppose Undecided Total
Female 389 216 67 U
Male V W 83 690
Total 684 X Y Z

Now, using the completed contingency table, select the statements from the following list that are true.   Note: a statement is true only if the value you calculated from the completed contingency table, when rounded to the same number of decimal places as in the statement, is the same as the value in the statement.  

a.

The probability a participant opposed abortion was 38.8%.

b.

The probability a participant was female and supported abortion was 24.8%.

c.

The probability a participant was male or was undecided about the issue of abortion was 61.7%.

d.

Gender and attitudes towards abortion are independent.

e.

The probability of male participants who were not undecided was 0.88.

f.

Of those surveyed who supported abortion, 43% were male.

In: Math

Explain the Chi – Square test and when it is appropriate. Give example of such test.

Explain the Chi – Square test and when it is appropriate. Give example of such test.

In: Math

You toss a pair of fair six-sided dice 30 times. What is... The probability that none...

You toss a pair of fair six-sided dice 30 times. What is...

The probability that none of the 30 throws give a total of 12?

The probability that a total of 7 appears 5 or more times?

In: Math

This question is an extension from Q2 above. The high school teacher was also interested in...

This question is an extension from Q2 above. The high school teacher was also interested in whether there is a gender difference in terms of the student’s choice of majors. So he broke the data down by gender in the following table and conducted a Chi-square test for independence with α = .05.

Type of Major

Female

Male

Total

STEM

10

25

35

Social Sciences

11

9

20

Liberal Arts

7

3

10

a. What are the variables in this analysis? What scale of measurement is each variable (nominal, ordinal, or continuous)? (2 points total: 1 for each variable- .5 for variable name, .5 for variable type)

b. State the null and alternative hypotheses in words (1 point total: .5 for each hypothesis)

c. Calculate X2 statistic (2 points total: 1 for final answer, 1 for the process of calculating it)

d. Calculate the degree of freedom and then identify the critical value (1 point total: .5 for df, .5 for critical value)

e. Compare the X2 statistic with the critical value, then report the hypothesis test result, using “reject” or “fail to reject” the null hypothesis in the answer (1 point total, .5 for each answer)

f. Explain the conclusion in a sentence or two, to answer the research question. (1 point)

In: Math

This exercise assumes familiarity with counting arguments and probability. Kent's Tents has four red tents and...

This exercise assumes familiarity with counting arguments and probability.

Kent's Tents has four red tents and three green tents in stock. Karin selects four of them at random. Let X be the number of red tents she selects. Give the probability distribution. (Enter your probabilities as fractions.)

x 1 2 3 4

P(X = x)

Find

P(X ≥ 2).

(Enter your probability as a fraction.)

P(X ≥ 2) =

In: Math

1) You and a friend are talking about the probability of getting a heads on a...

1) You and a friend are talking about the probability of getting a heads on a single toss of a fair coin. Your friend insists that you are more likely to get a heads on a single toss of a fair coin than a tails. Is your friend correct, why or why not? If we were to toss the fair coin an infinite number of times, what would we expect?

2) What does it mean for two probabilities to be mutually exclusive? Provide an example of probabilities that are mutually exclusive.

In: Math

Mathematical, what is the difference between Weighted and Regular Mean? Technical, they are both averages. How...

Mathematical, what is the difference between Weighted and Regular Mean? Technical, they are both averages. How does each measure uniquely find the center of a distribution?

In: Math

For the following, Use the five-step approach to hypothesis testing found on page 8-16. It states....

For the following, Use the five-step approach to hypothesis testing found on page 8-16. It states. You can use excel to compute the data or you can do it by hand. The youtube videos provided in the links will walk you through the steps to complete the following problems.

  1. State the hypothesis and identify the claim.

H0:

H1:

  1. Find the critical value and determine what error level to use. For all the problems on this homework use an alpha level of .05 Determine if the test is right tailed, left tailed or non-directional.
  2. Compute the test Value It will be a Chi Square
  3. Make a decision to reject or fail to reject the null hypothesis.
  4. Summarize the results

Problem #3 You are a researcher who wants to know if there is a significant difference in teenagers who show aggressive behavior after watching violent video games. You, as a researcher, observe both males and females to find observed behavior after watching violent video games. Behavior observed will include cursing, yelling, pushing, punching or any gestures that resemble a threat. After your observation, you collect the following data. Use a chi square to test your hypothesis. Use table G to find the critical value and region to help you make your decision to reject or fail to reject the HO: Remember to find the degrees of freedom Rows-1 times columns -1 Use an alpha of .05. Watch instructional to help you through the steps.

Aggressive Behavior

Non-Aggressive Behavior

Males

59

21

Females

11

86


please solve with the same exact data given not any example or illustration

       

In: Math