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The Chevrolet dealers of a large county are conducting a study to determine the proportion of car owners in the county who are considering the purchase of a new car within the next year.
If the population proportion is believed to be no more than 0.15, how many owners must be included in a simple random sample if the dealers want to be 90% confident that the maximum likely error will be no more than 0.02?
What is the calculation if facebook reports that the average number of facebook friends worldwide is 175.5 with a standard deviation of 90.57 . If i was to take a sample of 25 students, what is the probability that the mean number of facebook frie..
according to the ioc female participation in the 2000 summer olympic games was 42. a sports-merchandising expert
The daily quantity demanded of unleaded gasoline in a regional market can be represented as Q = 100 - l Op + E, where p E [O, 8], and E is a random variable having a probability density given by f( e) = .025/1-20,201 (e) Quantity demanded, Q, ..
What is the expected number of applications? What is the variance?- If she has enough time to complete at most four applications, how confi- dent can she be of getting an offer within the available time?
a manufacturing company wants to investigate the product coming out of two machines has a similar diameter or not. it
He will then compare the season batting averages of group A (those with ballet training) and group B (those without ballet training) by comparing the mean of group A with the mean of group B.
If the public relations agency's claim is correct, what is the probability that interviews with 500 people would yield 320 or fewer who felt the company was an industry leader?
A producer of pleasure boats wants to maximize revenue during the next month. Two types of boats are sold, x1 and x2. Type x1 sells for $40,000 and type x2 sells for $30,000. The x1 boats require 10 weeks of labor and 600 board feet of lumber each..
Assume a sample of 300 subscribers to The Wall Street Journal found 165 subscribers with an income over $131,000 and 135 subscribers with an income under $131,000. Can you conclude that there is any difference between the median incomes of the two..
a random sample of 16 csn students is taken. the average age in the sample was 27 years with a standard deviation of 4
If Stephenson wishes to maximize its total market value, would you recommend that it issue debt or equity to finance the land purchase? Explain.
In the table below, X1 is a random sample of 20 observations from an exponential population with parameter β = 1.44, so that the median, η = 1. X2 is the same data set plus a constant, 0.6, and random Gaussian noise with mean μ = 0 and standard de..
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