or this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? p μ Select an answer ≠ > < = H1:H1: ? μ p Select an answer < > ≠ = The test statistic ? z t = (please show your answer to 2 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
The average American consumes 95 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 13 randomly selected college students and found that they averaged 86.3 liters of alcohol consumed per year with a standard deviation of 24 liters. What can be concluded at the the αα = 0.10 level of significance?
- For this study, we should use Select an answer z-test for a population proportion t-test for a population
mean - The null and alternative hypotheses would be:
H0:H0: ? p μ Select an answer ≠ > < =
H1:H1: ? μ p Select an answer < > ≠ =
- The test statistic ? z t = (please show your answer to 2 decimal places.)
- The p-value = (Please show your answer to 4 decimal places.)
Concept:
The one-sample t-test is a statistical technique that used to define whether a sample of data could have been produced by a procedure with a precise mean. The one-sample t-test is used when the population standard deviation is not known and the sample size is less than 30. In this case, the researcher wants to see whether the average college student consumes less than 95 liters of alcohol per year. As the population variance is unknown, we will use a one-sample t-test.
Answers:
- For this study, we should use a t-test for a population mean.
- The null and alternative hypotheses would be:
H0: μ = 95
H1: μ < 95
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