Please see the attached file.
A hypothesis test is used to test a claim. You get 1.75 as your test statistic and 1.59 as your critical value for a right-tailed test. Which of the following is the correct decision statement for thetest?
A. Reject the null hypothesis
B. Claim the null hypothesis i

At a certain university, the average cost of books per student was $400 per student last semester. In a sample of 40 students this semester, their average cost was $430 with a standard deviation of $80. The Dean of Students believes that the costs are greater this semester. What is thetest value for this hypothesis?

Perform a 5 step hypothesis test on the given data for the following null and alternative hypothesis:
Null Hypothesis - TB is greater in the U.S. than foreign countries between 1993-2009
Alternative Hypothesis - TB is less in the U.S. than in foreign countries between 1993-2009.
See the attached files.

Discuss the null hypothesis. How is it framed? What is the alternate hypothesis? How does it relate to the null hypothesis? Can you have possible outcomes not embraced by the null or alternate hypotheses?

Please see the attached file.
4.
(a) What is the meaning of the term "null hypothesis".
(b) How do you know when to perform a "left-tailed" test in a hypothesis-testing situation versus a "right-tailed" or "two-tailed" test?
5. A hypothesis test is used to tes

1) A random sample n=40 observations from a population produced a mean of 30.9 and a standard deviation of 2.4. Suppose that you wish to show that the population mean (mu) exceeds 30.
A) Give the null and alternative hypothesis for the test.
B) If you wish your probability to be of (erroneously) deciding that mu>30, when i

Tourism is one consideration for CoffeeTime's future, A survey of 1,233 visitors to mumbai last year revealed that 110 visited a small cafe during their visit. Laura claims that 10% of tourists will include a visit to a cafe.

Question: Determine the p-value for each of the following hypothesis-testing situations:
a. H0: p = 0.25 and Ha: p does not = 0.25; z test value = 1.84
b. H0: u >/= 13.5 and Ha: u < 13.5; t test value = -1.94 d.f. = 10

A poll of U.S. health professionals revealed 82% would choose the same career. In a hypothesis test conducted at a level of significance of 5%, a P-value of 0.023 was obtained. Choose the best interpretation of the hypothesis test.

A research organization has collected the following data on household size and telephone ownership for 200 U.S. households at the 0.05 level, are the two variables independent? Based on the chi-square table, what is the most accurate statement that can be made about the p-value for thetest?