Conduct a hypothesis test

Assignment Help Basic Statistics

Reference no: EM131402586

Social interaction of mental patients. The Community Mental Health Journal (August 2000) presented the results of a survey of over 6,000 clients of the Department of Mental Health and Addiction Services (DMHAS) in Connecticut. One of the many variables measured for each mental health patient was frequency of social interaction (on a 5-point scale, where 1 = very infrequently, 3 = occasionally, and 5 = very frequently). The 6,681 clients who were evaluated had a mean social interaction score of 2.95 with a standard deviation of 1.10.

(a) Conduct a hypothesis test (at α = .01) to determine if the true mean social interaction score of all Connecticut mental health patients differs from 3.

(b) Examine the results of the study from a practical view, then discuss why ‘‘statistical significance'' does not always imply ‘‘practical significance.''

(c) Because the variable of interest is measured on a 5-point scale, it is unlikely that the population of ratings will be normally distributed. Consequently, some analysts may perceive the test, part a, to be invalid and search for alternative methods of analysis. Defend or refute this position.

Reference no: EM131402586

Questions Cloud

Length of the annuity time period : You are considering an annuity which costs $90,000 today. The annuity pays $5,900 a year. The rate of return is 6 percent. What is the length of the annuity time period? (Do not round intermediate calculations.)

Are capital controls effective in practice : What do capital controls imply for the response of the economy to shocks?

Annual percentage rate on account : Your credit card company charges you 1.07 percent per month. What is the annual percentage rate on your account?

What is marko willing to pay today to buy abc co : Marko has determined that a rate of return of 11 percent is applicable to this potential purchase. What is Marko willing to pay today to buy ABC Co.?

Conduct a hypothesis test : Conduct a hypothesis test (at α = .01) to determine if the true mean social interaction score of all Connecticut mental health patients differs from 3.

What is the actual rate : Mr. Miser loans money at an annual rate of 22 percent. Interest is compounded daily. What is the actual rate Mr. Miser is charging on his loans?

Describe enrons initiative on broadband technology : Describe Enron's initiative on broadband technology. What was Arthur Andersen's conflict of interest in regards to Enron? What could have been done to prevent this conflict of interest?

Define the parameter of interest : Define the parameter of interest, μ.- Setup the null and alternative hypothesis of interest.- Find y‾ and s for the sample data, then use these values to compute the test statistic.

What is the annual percentage rate on your account : You are paying an effective annual rate of 14.50 percent on your credit card. The interest is compounded monthly. What is the annual percentage rate on your account?

User Account

All Pages