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Eight male and eight female college students who have credit cards were surveyed and asked their total credit card debt. The responses are given below in dollars:
Males: 1000, 2100, 900, 1200, 1300, 500, 1400, 700
Females: 1300, 500, 2000, 1800, 1300, 1000, 2600, 1400
Researchers wanted to determine if there is a difference in the mean credit card debt owed by males versus females. Using α = 0.10, is there a difference. (Show all six steps of hypothesis testing.)
By using the normal probability distribution, what is the probability the car will be repaired in 35 minutes or less?
Estimate the probability the store will gross over $850 a) At least 3 out of 5 business days.
Suppose the population is normally distributed they make a decision to do a hypothesis test.
Find out a 95% confidence interval for the proportion p of adults who have a great deal of trust and confidence in the executive branch of government.
Consider a hypothesis test that uses a 0.05 significance level to test the claim that the mean body tem of the population is less than 98.6
If an applicant is randomly selected, find the probability of a rating that is between 200 and 275.
Determine and report the within-group slope which relates Y to Xc (for this, you will have to look at your regression printout).
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
Beta and required rate of return stock has required return of 11%; risk-free rate is 7%t; and market risk premium is 4 %. Determine the stock's beta?
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
Employer wishes to interview only those applicants who score in top 15%. What must cut-off score be for interviews?
Carry out test of independence to find out whether employee health insurance coverage is independent of size of company. Use α = 0.05 level of significance.
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