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The police department for a major city has found that the average height of their 1,250 officers is 71 inches, with a standard deviation of 2.3 inches. Using the normal curve table, answer the following:
a. how many officers are at least 75 inches tall?
c. if an officer is in the 35th percentile in terms of height, how tall is he or she?
d. assuming an equal amount of service, the top 10% of the police officers in terms of height also make higher salaries than their less favored fellow officers. How tall does an officer have to beto get a better salary.
e. what is the probability of encountering an officer who is 66 inches tall or less?
f. what heights are so deviant that their probablity if icdcurance is .05 or less?
A marketing survey involves product recognition in New York and California. Of 600 New Yorkers surveyed, 195 knew the product while 150 out of 614 Californians knew the product.
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At the 0.01 significance level is it reasonable to conclude that the modifaction reduced the number of traffic accidents?
What are the null and alternative hypotheses? In what way do the two estimates of the defect rate in question 3g differ?
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Computing the probability values using normal distribution - Evaluate the percentage of homes that generate between 27 and 31 pounds of recycling per month.
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