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A telephone company wants to estimate the proportion of households that would purchase an additional telephone line if it were made available at a substantially reduced installation cost. A random sample of 700 households is selected and the results indicate that 198 of the households would purchase an additional line at the reduced installation cost. Find a 99% confidence interval for the proportion in the population that would purchase an additional line at reduced installation cost.
there are thirty-five 35 members in the kalamazoo travel club. four 4 people will be chosen to win a vacation.how many
The sports expert reported that 202 of 454 athletes in the random sample were women. Is this strong evidence that the participation rate may have increased?
At the .10 significance level you will test to determine if there has been an increase in selling time. What is your decision?
The production manager for Beer etc. produces 2 kinds of beer: light and dark.
A recent study of the USA births showed the average birth weight of a male was 8 lbs.; the average weight of a female newborn was 7.4 lbs.
Find the equation of the regression line of In y in terms of and calculate the correlation coefficient.
What is the conditional probability that a randomly selected customer would order a biscotti, given that he or she orders coffee?
Group 2 data [ 141, 139, 172, 131, 150, 125. Assume normal distribution, with equal variance in the two groups and conclusion for a=0.05.
q1. two opponents a and b are to play a game which consists of two indenotpendent rounds. to win the game a player must
10 of pregnant women deliver prematurely. an obstetrician is seening 16 pregnant women in his next clinic session.a.
The game of craps requires the player to throw two dice one or more times until a decision has been reached as to whether he (or she) wins or loses. He wins if the first throw results in a sum of 7 or 11 or, alternatively, if the first sum is 4, 5..
Identify the two hypotheses involved in a paired t-test. What is the "pairing" requirement? Give a concrete example.
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