The mean age of De Anza College students in a previous term was 26.6 years old....
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The mean age of De Anza College students in a previous term was 26.6 years old. An instructor thinks the mean age for online students is older than 26.6. She randomly surveys 58 online students and finds that the sample mean is 29.9 with a standard deviation of 2.2. Conduct a hypothesis test at the 5% level. State the null and alternative hypotheses (in years). (Enter != for # as needed.) Ho: H₂: What is the test statistic? (Round your answer to two decimal places.) What is/are the critical value(s)? (If using the z distribution round your answer(s) to two decimal places, and if using the t distribution round your answer(s) to three decimal places. Enter NONE for any unused answer blanks.) lower tail upper tail What is the decision of the test and what conclusions can be drawn? O At the 5% level of significance we would fail to reject Ho and conclude that there is sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would fail to reject H and conclude that there is not sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would reject H and conclude that there is sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would reject Ho and conclude that there is not sufficient evidence to conclude that the average age of online students is more than 26.6 years. The mean age of De Anza College students in a previous term was 26.6 years old. An instructor thinks the mean age for online students is older than 26.6. She randomly surveys 58 online students and finds that the sample mean is 29.9 with a standard deviation of 2.2. Conduct a hypothesis test at the 5% level. State the null and alternative hypotheses (in years). (Enter != for # as needed.) Ho: H₂: What is the test statistic? (Round your answer to two decimal places.) What is/are the critical value(s)? (If using the z distribution round your answer(s) to two decimal places, and if using the t distribution round your answer(s) to three decimal places. Enter NONE for any unused answer blanks.) lower tail upper tail What is the decision of the test and what conclusions can be drawn? O At the 5% level of significance we would fail to reject Ho and conclude that there is sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would fail to reject H and conclude that there is not sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would reject H and conclude that there is sufficient evidence to conclude that the average age of online students is more than 26.6 years. O At the 5% level of significance we would reject Ho and conclude that there is not sufficient evidence to conclude that the average age of online students is more than 26.6 years.
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The null and alternative hypotheses can be stated as follows Null hypothesis H0 The mean age for onl... View the full answer
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