5. To test the null hypothesis that the average lifetime for a particular brand of bulb is 750 hours versus the alternative that the average lifetime is different from 750 hours, a sample of 75 bulbs is used. If the standard deviation is 50 hours and alpha is equal to 0.01, what values for x-bar will result in rejection of the null hypothesis.

6. Describe the action that would result in a type I error and a type II error if each of the following null hypotheses were tested.
a. H0: There is no waste in US Defense Department spending
b. H0: This fast-food menu is not low fat

8. Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
a. H0: mu = 25 and Ha: mu not equal 25, alpha = 0.10

b. H0: mu = 32 and Ha: mu > 32, alpha = 0.01
c. H0: mu = 13 and Ha: mu < 13, alpha = 0.05

Please see the attached file.
A hypothesistest 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 the test?
A. Reject the null hypothesis
B. Claim the null hypothesis i

Perform a 5 step hypothesistest 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 hypothesistest 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 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 the test?

Consider the following hypothesistest: H0: mean greater than or equal to 5 vs. H1: mean < 5. Suppose that you take a sample and conduct the test. You conclude that you can reject the null hypothesis.
What can you say about the results of the hypothesistest: H0: mean = 5 vs. H1: mean not equal to 5 tested using the same