Sample tests for hypotheses

Assignment Help Basic Statistics

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

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