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Assume that the paired data came from a population that is normally distributed. Using a 0.05 significance level find the mean value of the differences d for the paired sample data, the standard deviation of the differences d for the paried sample data, the t test statistic, and the critical values to test the claim that ?d=0.
xi 15 9 19 6 6 13 18 8
yi 15 12 14 10 9 13 14 7
Two popular over-the-counter antacids are compared to determine which brand is preferred. Three hundred subjects are randomly selected then divided into two groups of 150 each, and given one of the two antacids.
A Tamiami shearing machine is producing 10 percent defective pieces, which is abnormally high. The quality control engineer has been checking the output by almost continuous sampling since the abnormal condition began.
The function s(t) = ut + 1/2 gt^2 represents the distance traveled s meters in time t seconds when the initial velocity is u m/s and acceleration is g m/s^2.
in a university statistics course a correlation of -0.8 was found between numbers of classes missed and course grade.
explain what will happen to the width of a confidence interval increase decrease or remain the same as a result of
in 1997 frequent flyer magazine reported that 71 of frequent fliers surveyed complained that they had difficulty
Probability that if 11 households are selected at random, exactly 9 of the households will own DVD players? Calculate the mean and standard deviation for the problem.
in the game of blackjack a player receives two cards. the value of each card is equal to its numerical value or 10 if
Assuming that the conditions for the binomial distribution are satisfied, what is the probability that the sample will lead Ziteck to reject the shipment if the defect rate is actually 0.05?
A test of hypothesis is conducted at the .05 level of significance to test either or not the population correlation is zero.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
a selfless person approaches jones and smith with a 100 bill and offers to sell it to the highest bidder but both the
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