In: Math
A survey of the mean number of cents off that coupons give was conducted by randomly surveying one coupon per page from the coupon sections of a recent San Jose Mercury News. The following data were collected: 20¢; 75¢; 50¢; 65¢; 30¢; 55¢; 40¢; 40¢; 30¢; 55¢; $1.50; 40¢; 65¢; 40¢. Assume the underlying distribution is approximately normal. You wish to conduct a hypothesis test (α = 0.05 level) to determine if the mean cents off for coupons is less than 50¢.
In: Math
ASSIGNMENT:
Write a program to keep track of the total number of bugs collected in a 7 day period. Ask the user for the number of bugs collected on each day, and using an accumulator, keep a running total of the number of bugs collected. Display the total number of bugs collected, the count of the number of days, and the average number of bugs collected every day.
Create a constant for the number of days the bugs are being collected, and use that number throughout the program. Using a decision, either display "bug" or "bugs" as appropriate.
There is no validation.
Example Run #1:
(bold type is what is entered by the user)
How many bugs were collected on day #1? 5
How many bugs were collected on day #2? 2
How many bugs were collected on day #3? 3
How many bugs were collected on day #4? 6
How many bugs were collected on day #5? 1
How many bugs were collected on day #6? 4
How many bugs were collected on day #7? 2
In the 7 day period, the total number of bugs collected was xx
bugs.
The count is: x days
The average is: x.xx bugs per day
Example Run #2:
How many bugs were collected on day #1? 1
How many bugs were collected on day #2? 0
How many bugs were collected on day #3? 0
How many bugs were collected on day #4? 0
How many bugs were collected on day #5? 0
How many bugs were collected on day #6? 0
How many bugs were collected on day #7? 0
In the 7 day period, the total number of bugs collected was x
bug.
The count is: x days
The average is: x.xx bugs per day
The example runs show EXACTLY how your program input and output will look.
C programming no floats
In: Computer Science
One car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 7 m/s, they then have the same energy. What were the original speeds of the two cars?
In: Physics
Match the following passages with the fallacy committed. Only one instance of a fallacy is used(False DilemmaImproper,Appeal to Authority,Post Hoc,Appeal to Ignorance,Hasty Generalization,or Two Wrongs)
| 1.As a scientist, I base my science on a combination of things. One is observation. I've seen aliens and alien technology with my own eyes so I know there is life on other planets. | |
|
2.You can't apply the scientific method to evolution. It's never been observed. You can't repeat the experiment. 3.Who should the U.S. support in the Mid East crisis? The Israelis or the Arab states? 4.We polled everyone in the cafeteria yesterday and found out that 72% of the student body believes the local newspaper is bias in its reporting. 5.If the police aren't going to do anything about the crimes, then we citizens are just going to take matters into our own hands and deal with the criminals in our own way! |
In: Psychology
15.What kind of information is contained in the bottom box of information? (has Equality of Variances in the upper middle of box)
Select one:
a. Location information on the two populations.
b. Validity information on the hypothesis test.
c. Spread information on the two populations.
d. Descriptive information on the two samples.
16.What kind of information is contained in the third box of information? (has Pooled and Satterthwaite in the left side of box)
Select one:
a. Validity information on the hypothesis test.
b. Location information on the two populations.
c. Descriptive information on the two samples.
d. Spread information on the two populations.
17.What is the null hypothesis of Levene's Equality of Variances hypothesis test?
Select one:
a. H0: The samples are equal.
b. H0: The populations are equal.
c. H0: The population variances are equal.
d. H0: The population means are equal.
18.What is the null hypothesis of the two-sample independent t-test?
Select one:
a. H0: The population means are equal.
b. H0: The population variances are equal.
c. H0: The samples are equal.
d. H0: The populations are equal.
19.Which row of the two-sample independent t-test output is used if the Equality of Variance p-value = 0.08?
Select one:
a. The row for The Equal Variances.
b. The row for the Satterthwaite Method.
c. The row for the Pooled Method.
d. The row for the Folded F Method.
20.Looking at the output for the two-sample independent t-test, are the population spreads for Bush and Gore equal?
Select one:
a. No, because the S-W p-values for Bush and Gore are both less than 0.05.
b. Yes, because we always assume equality of variances for two-sample, independent t-tests.
c. Yes, since the sample sizes for both Bush and Gore is 50, which is greater than 30.
d. No, since the p-value in the Folded F row is less than 0.05.
21.Looking at the output for the two-sample independent t-test, which p-value tests whether the mean number of votes for Bush and Gore are equal?
Select one:
a. 0.4563
b. 0.9124
c. 0.9125
d. 0.0309
In: Statistics and Probability
|
Do nothing |
A |
B |
|
|
Capital investment |
$0 |
$100 |
$130 |
|
Annual revenues |
$0 |
$150 |
$130.78 |
|
Annual costs |
$0 |
$123.62 |
$92 |
In: Economics
The number of hours 10 students spent studying for a test and their scores on that test is represented in the table below.
|
Hours spent studying, x |
0 |
2 |
4 |
5 |
5 |
5 |
6 |
7 |
8 |
9 |
|
Test scores, y |
40 |
51 |
64 |
69 |
73 |
75 |
93 |
90 |
95 |
95 |
3) Describe the type of correlation and interpret the correlation in the context of the data. Be specific in describing the magnitude, direction, and strength of the relationship. (12p)
4) Write out the null and alternative hypotheses and conduct a
hypothesis testing for the data. At the 1% level of significance,
is your test statistic statistically significant? Briefly explain
how you reached your conclusion.
For this question you must state followings: degrees of freedom,
one or two tailed hypothesis testing, the critical value, test
statistic, do you reject or fail to reject the null hypothesis.
(25p)
5) Find the equation of the regression line for the hours spent studying and test scores of students. What are the intercept (a) and slope (b) values of the regression formula, Ŷ = a+ bX for predicting test scores variable from hours spent studying variable. Write the formula replacing a and b by their respective numerical values (round off each element in the final formula to three decimal places). (15p)
In: Statistics and Probability
Problem A Almond Delights is an almond grower. They have two primary products Premium Almonds and Choice Almonds. One acre of almond trees yields about 600 pounds of Premium and 1,400 pounds of Choice almonds at a cost of $6,000. A pound of Premium Almonds can be sold for $6.68. A pound of Choice can be sold for $4.28. Almond Delights further processes the 1,400 pounds of Choice almonds into 175 gallons of All Natural Almond Butter at an additional cost of $2,500. All Natural Almond Butter is sold for $40 per gallon. The 400 pounds of Premium Almonds is further processed into 450 pounds of Chocolate Almond Delights at an additional cost of $900. Each pound of Chocolate Almond Delights is sold for $12. 5.
5.What would gross profit be for Chocolate Almond Delights under the sales value at split-off method?
6. What would gross profit be for Chocolate Almond Delights under the NRV method?
7. What is the company's profit or loss when Premium almonds are further processed into Chocolate Almond Delights? (Enter a loss in parentheses.)
8. What is the company's profit or loss when Choice almonds are further processed into All Natural Almond Butter? (Enter a loss in parentheses.)
In: Accounting
They use the team "It's in the cloud!" has to be one of the most overused IT phrases in the last few years. But what does it actually mean?
Please define what exactly the cloud is and what can be done "in the cloud". Also research and define the following two related topics:
-Software as a Service (SAAS)
-Application Service Provider (ASP)the main post must be at least 200 words.
In: Computer Science