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Suppose that a recent poll found that 40?% of adults in a certain country believe that the overall state of moral values is poor. If a survey of a random sample of 45 adults in this country is conducted in which they are asked to disclose their feelings on the overall state of moral? values, complete parts? (a) through? (e) below. Use the Tech Help button for further assistance.
(a) Find and interpret the probability that exactly 15 of those surveyed feel the state of morals is poor. The probability that exactly 15 of those surveyed feel the state of morals is poor is What? (Round to four decimal places as needed.)
If the shop does not want to give more than 1% of its customers a free lube and oil change service, how long should the guarantee be?
A survey of magazine subscribers showed that 55.8% rented a car during the last 12 months for business reasons, 44% rented a car for personal reasons, and 25% rented a car for both business and personal reasons.
A researcher randomly divides two groups of people
A developmental psychologist is studying memory development in children. He is interested in determining the exact age at which children began to recall long-term episodic memories.
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50,
Use the Excel COUNTIF function to determine the number of tires that last longer than 40,000 miles. What is your estimate of the percentage of tires that will exceed 40,000 miles?
it is found that when a particular 4-sided die is rolled a 1 occurs 25.8 of the time a 2 occurs 24.6 of the time a 3
finnish furniture manufactures tables in facilities located in three cities-reno denver and pittsburgh. the tables are
a bottling company is supposed to fill bottles with an average weight of 16 ounces. the company randomly selects
A particular product is known to have an exponential failure time distribution with a mean of 12 months.
Calculate and compare the means for IQ as a dependent variable and gender as your independent variable. Do you think males and females differed in their IQ scores? Why?
Suppose the budget has the support of 52% of the voters. What is the probability that the newspaper's sample will lead it to predict defeat?
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