Concept of null and alternate hypotheses

Reference no: EM1321140

Information from AAA indicates that the mean age of passenger cars in the US is 8.4 years. A sample of 40 cars in the student lots at the local university showed the mean age to be 9.2 years. The standard deviation of this sample was 2.8 years. At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students?

A. State the null hypothesis and the alternate hypothesis.

B. What is the p-value?

C. What is the critical value of the test statistic?

Reference no: EM1321140

Questions Cloud

Role of the leader in changes : Select, define, and expand upon a change model that would be utilized to implement these changes in the organization. Discuss the role of the leader in these changes, including the specific style and skills that would best be needed in this instanc..

Solving probability problems based on empirical rule : Solving probability problems based on empirical rule

Give the formula for test statistic and p-type one error : a. What is the probability of a type I error? b. Give the formula for the test statistic.

Calculate the probability of drawing a king or a diamond : Calculate the probability of drawing a King or a diamond

Concept of null and alternate hypotheses : At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? State the null hypothesis and the alternate hypothesis.

Discovering loss on beautiful silver tea set : Claudia owned a beautiful silver tea set. It was quite valuable. Claudia took her silver tea set to Jaeger Silver, a silver store. She asked Mrs. Jaeger if she could polish the set and repair the sugar bowl.

Interpret the result and test to reject hypothesis for mean : Shall we reject the hypothesis that the population mean is 6.0? Interpret the result.

State the decision rule for the mean : It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.

Test using the traditional approach with a = 0.05 : Test using the traditional approach with α = 0.05

User Account

All Pages