Interpret the decision regarding the null hypothesis

Assignment Help Basic Statistics

Reference no: EM1321151

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. Compute the value of the test statistic.

b. What is your decision regarding the null hypothesis?

c. Interpret your decision from part e in a single sentence.

Reference no: EM1321151

Questions Cloud

Lawsuit for fraudulent mispresentation : Assume that Anthony had contacted various users of Yahoo's online dating service only to discover that each user's profile exaggerated the user's physical appearance, intelligence, and occupation. Would Anthony prevail if he brought a lawsuit for ..

Find p value and critical value : At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? What is the p-value?

Find the sample mean and sample standard deviation : find that the sample mean and sample standard deviation

Employment discrimination in european union : Investigate any laws that prohibit employment discrimination in European Union, Australia, Japan & China. Note similarities and differences from American laws. What values or assumptions do the laws of these countries make about the employment rel..

Interpret the decision regarding the null hypothesis : At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? Compute the value of the test statistic.

Variety of ergonomic household : Ergo Products manufactures a variety of ergonomic household toold including a cordless drill. The cordless drill comes with a battery recharger. Currently, the company manufactures its own recharger for the drill with the following unit costs:

Total relevant costs of accepting the special order : What are the total relevant costs of accepting the special order? From a quantitative basis, should they accept the special order? By what amount will the rink's net income increase or decrease if they accept the special order?

Hypothesis test for population mean : Hypothesis test for population mean

Message of the commercial : A man looks at the camera and says in a sympathetic Swedish accent, "Many of you feel bad for this lamp," and then, after a well-timed pause, "That's because you're crazy." What's the message of the commercial?

User Account

All Pages