A union of restaurant and food service workers would like to estimate this year's mean hourly wage, μ, of food service workers in the U.S. Last year's mean hourly wage was $8.14, and there is reason to believe that this year's value is less than last year's. The union decides to do a statistical test to see if the value has indeed decreased. The union chooses a random sample of this year's wages, computes the mean of the sample to be $7.74, and computes the standard deviation of the sample to be $1.10. Based on this information, answer the questions below. What are the null hypothesis (H0) and the alternative hypothesis (H1) that should be used for the test? H0: μ is H1: μ is In the context of this test, what is a Type II error? A Type II error is the hypothesis that μ is when, in fact, μ is.
from given data:
null hypothesis: HO: μ | = | 8.14 | |
Alternate Hypothesis: Ha: μ | < | 8.14 |
type II error:
A Type II error is to retain the hypothesis that μ is 8.14 when in fact μ is less than 8.14
A union of restaurant and food service workers would like to estimate this year's mean hourly...
A union of restaurant and foodservice workers would like to estimate this year's mean hourly wage, u, of foodservice workers in the U.S. Last year's mean hourly wage was $8.08, and there is reason to believe that this year's value is greater than last year's. The union decides to do a statistical test to see if the value has indeed increased. The union chooses a random sample of this year's wages, computes the mean of the sample to be $8.45,...
A union of restaurant and foodservice workers would like to estimate this year's mean hourly wage for foodservice workers in the U.S. Last year's mean hourly wage was 58.14, and there is reason to believe that this year's value is greater than last year's The union decides to do a statistical test to see if it can be concluded that the mean has increased. The union chooses a random sample of 125 wages from this year Suppose that the population...
A union of restaurant and foodservice workers would like to estimate this year's mean hourly wage u for foodservice workers in the U.S. Last year's mean hourly wage was $8.25, and there is reason to believe that this year's value is greater than last year's The union decides to do a statistical test to see if it can be concluded that the mean has increased. The union chooses a random sample of 125 wages from this year Suppose that the...
Problem Page A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to do a statistical test regarding the mean monthly mileage, μ, of cars rented in the U.S. this year. The consumer group has reason to believe that the mean monthly mileage of cars rented in the U.S. this year is greater than last year's mean, which was 2850 miles.The group plans to do a statistical test regarding...
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