Question

You want to test the hypothesis that the average NYU student spends no more than $600...

You want to test the hypothesis that the average NYU student spends no more than $600 on subway fares per academic year. You happen to know that variance in sub- way fare spending is $900. You plan to test this hypothesis by asking n students to 2 track their subway expenses over the course of the academic. If you have a significance level of .01, how many students would you have to track to have a 90% chance of rejecting the null hypothesis when the average subway spending is actually $620. (It is a one-sided hypothesis test with H0: μ = $600 and H1: μ > $600)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The null and alternate hypothesis are:

H0:

Ha:

Since this is a right tailed test, so the critial region is given by:

We know that,

----(1)

Also,

----(2)

Solving (1) and (2), we get,

which is the required number of students to be tracked.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A national publication reported that a college student living away from home spends, on average, no...
A national publication reported that a college student living away from home spends, on average, no more than $15 per month on laundry. You believe this figure is too low and want to disprove this claim. To conduct the test, you randomly select 19 college students and ask them to keep track of the amount of money they spend during a given month for laundry. The sample produces an average expenditure on laundry of $19.38, with a population standard deviation...
A national publication reported that a college student living away from home spends, on average, no...
A national publication reported that a college student living away from home spends, on average, no more than $15 per month on laundry. You believe this figure is too low and want to disprove this claim. To conduct the test, you randomly select 16 college students and ask them to keep track of the amount of money they spend during a given month for laundry. The sample produces an average expenditure on laundry of $19.36, with a population standard deviation...
A national publication reported that a college student living away from home spends, on average, no...
A national publication reported that a college student living away from home spends, on average, no more than $15 per month on laundry. You believe this figure is too low and want to disprove this claim. To conduct the test, you randomly select 16 college students and ask them to keep track of the amount of money they spend during a given month for laundry. The sample produces an average expenditure on laundry of $18.39, with a population standard deviation...
A national publication reported that a college student living away from home spends, on average, no...
A national publication reported that a college student living away from home spends, on average, no more than $15 per month on laundry. You believe this figure is too low and want to disprove this claim. To conduct the test, you randomly select 15 college students and ask them to keep track of the amount of money they spend during a given month for laundry. The sample produces an average expenditure on laundry of $18.35, with a population standard deviation...
To test whether the average Radford student spends more than $50 per month on alcoholic beverages,...
To test whether the average Radford student spends more than $50 per month on alcoholic beverages, Jade surveyed 70 randomly chosen students. For her sample, she found x¯=$52.50 and s=$3.70. The correct test and hypotheses for Jade’s test are what?
Let's say you want to test (at 0.05 significance level) whether female students, on average, scores...
Let's say you want to test (at 0.05 significance level) whether female students, on average, scores more than 600 on the verbal SAT exam. 20 female students were selected randomly and their scores (such as in the table): 650 730 510 670 480 800 690 530 590 620 710 670 640 780 650 490 800 600 510 700 a) Suppose σ = 100. Calculate the test statistic value is used. b) Suppose σ is unknown. Calculate the test statistic value...
1)You are conducting a study to see if the average female life expectancy is significantly more...
1)You are conducting a study to see if the average female life expectancy is significantly more than 93. If your null and alternative hypothesis are: H 0 : μ ≤ 93 H 1 : μ > 93 Then the test is: two tailed right tailed left tailed 2) If your null and alternative hypothesis are: H0:μ=40H0:μ=40 H1:μ>40H1:μ>40 Then the test is: right tailed two tailed left tailed 3) Below is a hypothesis test set up by a student who recently...
You wish to test the hypothesis that female college students spend more on wearing apparel than...
You wish to test the hypothesis that female college students spend more on wearing apparel than male college students. Which of the following is INCORRECT? The null and alternate hypotheses are: Ho : mF < = mM HA : mF > mM If you concluded that female students spend more than male students when in fact there is no difference between the two groups, you would be committing a Type II error. If we conclude that females spend less than...
You wish to test the claim that the average IQ score is less than 100 at...
You wish to test the claim that the average IQ score is less than 100 at the .01 significance level. You determine the hypotheses are: H o : μ = 100 H 1 : μ < 100 You take a simple random sample of 60 individuals and find the mean IQ score is 98.7, with a standard deviation of 14.6. Let's consider testing this hypothesis two ways: once with assuming the population standard deviation is not known and once with...
1a.) You want to know if psychology majors register for more hours, on average, than Upstate...
1a.) You want to know if psychology majors register for more hours, on average, than Upstate students in general. You ask 50 USC Upstate psychology majors how many hours they are taking, and acquire the population average (i.e., for all USC Upstate students) from administration. What kind of statistical test does this call for? Dependent Samples t-test Chi-square for independence Single Mean Correlation Independent Samples t-test ANOVA Chi-square for goodness of fit 1b.) Imagine you have conducted the appropriate test...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT