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In a random sample of 120 cheerleaders, 54 had suffered moderate to severe damage to their voices. With 90% confidence, what can we say about the maximum error if we use the sample proportion 54/120 = 0.45 as an estimate of the true proportion of cheerleaders who are afflicted in this way?
a lot consisting of 150 fuses is inspected by the following procedure. five fuses are chosen at random and tested if
1. calculate the residual for the x y pair 44491 4807.2. did the regression equation underestimate or overestimate the
How is ex defined in terms of an infinite sum?
data on the number of occurrences per time period and observed frequencies follow. compute the value of the test
Suppose you have a tree farm and you have 1000 live oaks on this farm. You are wondering if this would be a profitable time to harvest the tallest ones - those over 55 feet tall.
an exam consists of 44 multiple-choice questions. each question has a choice of five answers only one of which is
the weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25
Find the mean, median, mode, variance and standard deviation for the following data set:
Set up the null and alternative hypotheses for Coca-Cola. In terms of Coke's decision to introduce the new bottle or not, what is a Type I error?
An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly
Find the weighted mean of three test scores for a student (85, 90, 75) where the first test counts for 20%, the second test counts for 30%, and the third counts for 50% of the final grade.
burger dome sells hamburgers cheeseburgers french fries soft drinks and milk shakes as well as a limited number of
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