Sample tests for hypotheses

Reference no: EM13108612

Scenario: A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60. A random sample of 42 college students revealed that the mean number of DVDs watched last month was 6.80. At the .05 significance level, can we conclude that college students watch fewer DVDs a month than high school students?

- State the null hypothesis and the alternate hypothesis.

- State the decision rule.

Reject H1 if z > -1.65

Reject H0 if z > -1.65

Reject H0 if z < -1.65

Reject H1 if z < -1.65

- Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

- What is your decision regarding H0?

Reference no: EM13108612

Questions Cloud

Explain data set comprises of set of numerical values : A data set comprises of set of numerical values. Which, if any, of the following statements could be right? Point to whether given statement could apply to data set consisting of 1,000 values which are all different.

What volume will it occupy at the same temperature : A sample of a gas occupies 1.40 x 103 mL at 25oC and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg?

Estimate the expected rate of return : Assume that you have $165,00 invested in stock that is returning 11.50%,$85,000 invested in a stock is returning 22.75% and $235,000 invested in a stock that is returning 10.25%.

Explain how do the changes in assumptions mentioned : Illustrate what other factors are relevant to this issue? Explain how do the changes in assumptions mentioned by the other managers affect the proposal?

Sample tests for hypotheses : A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60.

Describe the structure of the adrenal gland : describe the main causes of pituitary dysfunction and the methods used to evaluate normal/ abnormal hormone secretion- hormonal levels, feedback control and 'pituitary function' tests used in the clinic.

Explain how will pepsico involvement in this case affect : Does the proposed financial restructuring provide a permanent solution to BAESA’s problems? Explain how will PepsiCo’s involvement in this case affect the nature of the negotiations and the likely outcome of the restructuring?

Evaluating one sample hypothesis testing : Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time.

Marginal value for rides for the typical entrant : What are the solutions to this game and how much is it worth to you to get your casino building permit first

User Account

All Pages