What assumption must be made for the test to be valid

Assignment Help Basic Computer Science

Reference no: EM131406823

In an advertisement it is claimed that a brand of domestic air freshener will last on average at least 70 days. The mean and standard deviation of the lifetimes of a sample of 19 air fresheners were 69.3 days and 2.9 days respectively.

(a) Test the claim made for the product using a 5% level of significance.

(b) What assumption must be made for the test to be valid?

Reference no: EM131406823

Questions Cloud

Would you characterize your role as effective : Would you characterize your role as effective? How could you have been a better team member? What role(s) did you or the leader play in making the team effective? How could the leader have made the team more effective?

Determining the visual basic pseudocode : Design a program with a loop that asks the user to enter a series of positive numbers. The user should enter a negative number to signal the end of series. Once a user enters a negative number, your program should display sum of all positive numbe..

Screenshots of good and bad examples of websites : A document, correctly formatted, indexed and fully referenced of not more than 800 words illustrated with screenshots of good and bad examples of websites.

Insurers who can plan for changes can create their future : What are their strategies for pricing, marketing and distribution - What kind of value added services did they offered and what kind of product/services are they offering?

What assumption must be made for the test to be valid : In an advertisement it is claimed that a brand of domestic air freshener will last on average at least 70 days. The mean and standard deviation of the lifetimes of a sample of 19 air fresheners were 69.3 days and 2.9 days respectively.

Identify all the dfd elements : 1. Identify all the DFD elements. (People often miss the data flows. 2. Identify all threat types to each element. 3. Identify three or more threats: one for a data flow, one for a data store and one for a process.

Complete the required hands-on virtual labs : Complete the required hands-on virtual labs for this week. Research this topic and include at least three references from articles, books, or Web sites to support your paper.

Discuss the advantages of a person-focused approach : Discuss the advantages and disadvantages of a person-focused approach for both the employer and the employee. Support your position with specific examples.

What assumption must you make for the test to be valid : An IT manager considers that the average number of hits per week on the company intranet pages should be 75. The mean number of hits per week on a random sample of 38 pages is 71.4 with a standard deviation of 31.9.

User Account

All Pages