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Question: The average amount spent on electronics each year in U.S. households is $1,250, according to an article in USA Today (Michelle Kessler, "Gadget Makers Make Mad Dash to Market," January 4, 2006). Assume that the amount spent on electronics each year has an exponential distribution.
a. Calculate the probability that a randomly chosen U.S. household would spend more than $5,000 on electronics.
b. Compute the probability that a randomly chosen U.S. household would spend more than the average amount spent by U.S. households.
c. Determine the probability that a randomly chosen U.S. household would spend more than 1 standard deviation below the average amount spent by U.S. households.
Poisson distribution with a mean of 8.8 tickets per day. Find the probability that less than six tickets are written in one hour given that the police works for 12 hours.
Simmons Furniture Company is considering changing its starting hour from 8:00 a.m. to 7:30 a.m. A census of the company's 1,200 office and production workers.
a survery found that womens heights are normally distributed with mean of 62.1 and standard deviation of 2.3 in. the
An order for an automobile can specify either an automatic or a standard transmission, either with or without air conditioning, and with any one of the four colors red, blue, black, or white. Describe the set of possible orders for this experiment..
ESPN reported in sample of 1000 homes the proportion of people who watched the Texas v. Ohio State college football game this weekend was .6.
Prepare an analysis of how you developed your instrument. The survey instrument is supposed to determine the level of self confidence in the participant.
Percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
What would be the correct null and alternative hypothesis for the following situation: The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the mean speed of all cars is greate..
Using these data, construct a 99% confidence interval to estimate the average number of days and excavator is rented to a client, and assume the number of days per rental is normally distributed in the population.
What is the minimal number of days a person must watch to be at least 96.8% sure of seeing one or more hawks migrating?
Confirm that these statements are accurate by finding the geometric mean rate of increase.
Let p vary from 0.02 to 0.20 in increments of 0.02. b) Sketch the graph of the probabilities of the lot acceptance as the p value varies from 0.02 to 0.20.
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