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A tire manufacturer believes that the treadlife of its snow tires can be described by a Normal model with a mean of 32,000 miles and standard deviation of 2500 miles.
What fraction of these tires can be expected to last between 30, 000 and 35,000 miles?
Estimate the IQR of the treadlives.
In planning a marketing strategy, a local tire dealer wants to offer a refund to any customer whose tires fail to last a certain number of miles. However, the dealer does not want to take too big a risk. If the dealer is willing to give refunds to no more than 1 of every 25 customers, for what mileage can he guarantee these tires to last?
q1. determine the value of the coefficient of correlation for the following datax15829687110436y349510301322550q2. a
From the histogram, would you expect the mean or median to be larger? Explain.- Write a few sentences describing this distribution (shape, center, spread, unusual features).
The National Collegiate association (NCAA) reported that the mean number of hours spent per week on coaching and recruiting by college football assistant coaches during the season 70.
Drilling down beneath a lake in Alaska yields chemical evidence of past changes in climate. Biological silicon (in milligrams of silicon per gram of water).
the university of iowa is experimenting with a blend of soil amendments to be used in an analysis of variance study of
the yearly tuition costs x in hundreds of dollars for six state universities are given in the table below. for each
A W36×150 steel wide-flange beam is oriented so that bending is about the weak (Y-Y) axis. The member is subjected to a maximum shear of 140 kips.
The items produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.
Suppose you are given data from a simple comparative experiment in which nA observations have been made with treatment A
Given the Life expectancy data for the countries of the E.U., can we conclude that the mean Life Expectancy in the U.S. is greater than the mean Life expectancy in the E.U.?
What is three key strengths that will lead to positive results in developing supplier relationships?
An independent-measures t test produced a t statistic with df=20. If the same data had been evaluated with an analysis of variance, what would be the df values for the F-ratio?
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