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The salaries of the employees of a corporation are normally distributed with a mean of $25,000 and a standard deviation of $5,000.
a. What is the probability that a randomly selected employee will have a starting salary of at least $31,000?
b. What percentage of employees has salaries of less than $12,200?
c. What are the minimum and the maximum salaries of the middle 95% of the employees?
d. If sixty-eight of the employees have incomes of at least $35,600, how many individuals are employed in the corporation?
Compute the coefficient of determination, r 2 , and interpret its meaning.
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course:
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
Research the topic of Job Satisfaction using the Business Source Premier Database (EBSCO) and/or the ABI Inform Global database from the Internet.
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
Determine the probability that particular call lasted between 110 and 180 seconds?
Recognize independent variable and dependent variable for this experiment. Think in your head what influences what? Or, what causes what? Cause is independent variable.
Test the financial analyst's belief that the average rate charged by credit cards with monthly fees is less than 14%. Use a 5% significance level.
Apply the EOQ model to the following quantity discount situation in which D=500 units per year, C0=$40, and the annual holding cost rate is 20%. What order quantity do you recommend?
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