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A manufacturer of computer hard drives claims a failure rate of 5% or less during the first three years of operation. For a sample of 100 drives, 9 failed during the first three years of operation. Can we conclude at the 0.01 level that the claim is wrong and the failure rate is over 5%?
It was thought that the national average price per pound for Ospertan Basil Oil in 1999 in the US was $14 per pound. Since that time the Ospertan Basil Oil Cartel (OBOC) has tried to limit the supply of Ospertan Basil Oil reaching the U.S in order..
a jobs are sent to a printer at an average of 4 jobs per hour.i what is the expected time between jobs?ii what is the
starting positions for business and engineering graduates are classifies by industry as shown in the previous
Shank's, Inc., a nationwide advertising firm, wants to know whether the size of an advertisement and the color of the advertisement make a difference in the response of magazine readers.
The probability of an randomly selected person quits a team is 0.125. Assume the team has n members. Determine the smallest n that the team needs to have if the probability of the team has at least 20 members left is 0.9.
Compute the standard error of the mean O(funny o with line) line over x, for sample sizes of 50, 100, 15o, and 200. What can you say about the size of the standard error of the mean as the sample size is increased?
Why is it important to study ethics in statistics? Have you seen statistics misused? Without naming specific companies or people, can you provide examples?
suppose that three parachutists operate independently lands at a random point on a line between markers a and b. what
suppose x is uniform on 0 1 and yx. find the joint distribution function of x and
Cores on two tests have a bivariate normal distribution; and that correlation of 2 scores is 0.8. Determine the probability that sum of the student's scores on 2 tests will be greater than 200?
suppose x is a normally distributed random variable with mu 13 and sigma 2. find each of the following probabilities
can someone please help me with finding these critical t scores.1. what is the positive critical t score for a
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