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20 percent employees steal and probability that 5 will steal. A recent report in Business Week indicated that 20 percent of all employees steal from their company each year.
If a company employs 50 people, what is the probability that:
a. Fewer than 5 employees steal?b. More than 5 employees steal?c. Exactly 5 employees steal?d. More than 5 but fewer than 15 employees steal?
High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..
Is there evidence that the change was successful in reducing the wait time? (use 0.05 level of significance)
Caculate the expected value of the profit made by the insurance company. Many call this kind of situation a win win opportunity for the insurance company and the promoter. Do you agree? Explain.
An upper-level sociology class at a large urban university has 120 students, including 34 seniors, 57 juniors, 22 sophomores and 7 freshmen.
Use this information to develop a 95% confidence interval to estimate the production variance for the hourly wages of production workers in U.S. What is the value of upper limit of this confidence interval?
How does the bell-shaped curve for the sampling distribution of sample means for samples of size n = 100 compare to the bell-shaped curve for the sampling distribution of sample means for samples of size n = 60?
Suppose the following statistics were calculated from data gathered from a randomized block experiment with k = 4 and b = 10:
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 79.
Some of the factors affect statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?
Suppose 18 custopmers are selected at random. What is the proability that exactecly ten customers will ask for hot peppers?
Each year the local country club sponsors a tennis tournament. Play starts with 128 participants. During each round, half of the players are eliminated.
Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead.
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