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Part A-
1. A company's customer support division want to test to see if that wait time for a consumer to talk to a representative is under 10 minutes. The manager proposes to test one case where a consumer was placed on hold. Is this a good testing strategy? If not what would be a better testing strategy? Could you form a Null Hypothesis or an Alternative Hypothesis? If yes, what would they be.
2. Using a specific example explain what a point estimation is and a confidence interval is.
Part B-
Question 1: The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with a mean of 266 days and standard deviation of 16 days.
Question 2: A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. A company asks 12 job applicants to take a lie detect test. Suppose that all 12 applicants answer truthfully.
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
A recent report in BusinessWeek indicated that 20 percent of all employees steal from their company each year. fewer than 5 employees steal?
In testing the equality of the two means below, what is the test statistic? (Use the unequal variances formula)
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
Make a worksheet in Excel for your calculations. (b) Make a histogram of the data. Would you be justified in using a parametric t test that assumes normality?
multiple choice questions based on multiple regression.1. a multiple regression model has the form 5 6x 7w. as x
prediction interval for the regression line.using the age and sick days data from table below find the 98 prediction
(a) What is the average number of machines not in use? (b) What proportion of time is each machine in use?
USA Today conducted a survey asking readers, "What is the most hilarious thing that has ever happened to you en route to or during a business trip?" a. What kind of sampling method is this?
Find the probability between the given values for normal distribution.
Assume Nick doesn't know how his received he suppose that all three states of nature are equally likely to occur. If Nick uses the equally likely criterion illustrate what decision would he make.
Write up your responses and submit a PDF of the file to Canvas. There is no min or max page limit, but the burden is on you to convey your understanding.
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