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An automobile manufacturer has discovered that 20% of all the transmissions it installed in a particular style of truck one year are defective. It has contacted the owners of these vehicles and asked them to return their trucks to the dealer to check the transmission. The Friendly Auto Mart sold seven of these trucks and has two of the new transmissions in stock. What is the probability that the auto dealer will need to order more new transmissions?
The weight of bags of fertilizer is normally distributed, with a mean of 50 pounds and a standard deviation of 6 pounds. What is the probability that a bag of fertilizer will weigh between 45 and 55 pounds.
The Manager of the local National Video Store sells video cassette recorders at discount prices. If the store does not have a video recorder in stock when a customer wants to buy one, it will lose the sale because the customer will purchase a recorder from one of the many local competitors. The problem is that the cost of renting warehouse space to keep enough recorders inventory to meet all demand is excessively high. The manager has determined that if 90% of customer demand for recorders can be met, then the combined cost of lost sales and inventory will be minimized. The manager has estimated that monthly demand for recorders is normally distributed, with a mean of 180 recorders and a standard deviation of 60. Determine the number of recorders the manager should order each month to meet 90% of customer demand.
Find the equation of the regression line. Graph the line . Determine the slope and y-intercept of the regression line.
U.S. Population The population of the United States by race in 2000 and the projected population by race for the year 2025 are given below (in thousands).
The base of an aquarium with volume V = 220 is made of slate and the sides are made of glass. If slate costs five times as much (per unit area) as glass, find the dimensions of the aquarium that minimize the cost of the materials.
The mean number of hours a month that a certain group of video gamers playes online was 240. If the distribution of hours can be closely approximated by a normal curve with a standard deviation of 20 hours, what is the percentage of gamers who pla..
G(x) = 3x^5 - 5x^4 What is the relative extreme point of g. Please explain why.
A farmer has 700 feet of fence with which to fence a rectangular plot of land. The plot lies along a river so that only three sides need to be fenced. Estimate the largest area that can be fenced.
Find the Expected value of the investment
What "postulated proportion" would be associated with that distribution and using beta distribution quantiles, construct a 95% confidence interval for the success proportion of that distribution.
tuesday,848 miles on mwednesday, and 761 miles on thursday.what was the average number of miles she traveled per day?(Hint:add,then divide the total by the number of days
Explain why the normal distribution can be used as an approximation to the binomial distribution. What conditions must be met to use the normal distribution to approximate
a carpenter is building a rectangular room with a fixed perimiter of 300 ft. What dimensions would yield the maximum area? what is the maximum area?
A ship travels 98 kilometers on a bearing of 38 degrees and then turns on a bearing of 128 degrees for 169 kilometers. Find the distance of the end trip from the starting point.
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