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Industry standards recommend that 9 percent of new vehicles need warranty service in the first year. Jones Nissan in Sumter, South Carolina, sold 12 Nissans yesterday.
a. Determine the probability that none of these vehicles needs warranty service?
b. Determine the probability exactly one of these vehicles needs warranty service?
c. Compute probability that exactly two of these vehicles need warranty service.
d. Calculate the mean and standard deviation of this probability distribution.
Give a variable that could be used to stratify the population for each of the following studies. List at least four subcategories for each variable.
We desire to test at 0.05 level of significance whether modification increases the life of battery. What is our decision rule? Reject null hypothesis if calculated t is less than 1.96.
What is the probability that 30% or fewer male employees will indicate that they have to pick up the slack for mom's working flextime ?
The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
What is meant by the probability of an event? Discuss how addition and multiplication techniques are used to solve probability problems.
An auditor for a Health Maintenance service of Georgia reports 40% of policyholder 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
A quality control engineer selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. List all the possible outcomed of this experiment.
What should the cut-off score be for the interviews? (Round to nearest whole number).
Suppose we wish to test the hypothesis H0: = µ2 vs. H1: = µ≠2 We find a two sided p-value of .03 and a 95% CI for µ of (1.5, 4.0) Are these two results possibly compatible? Why or why not?
Commonwealth Edison wants to identify its heaviest users, which are those that are in the top 6% of electric consumption. How many kilowatt hours in January would qualify for the heavy user classification?
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
An automobile assembly line operation has a scheduled mean completion time of 2.2 minutes. Because of the effect of completion time on both preceding and subsequent assembly operations, it is important to maintain the 2.2 minute mean completion ti..
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