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The one time fling. Have you ever bought the article of clothing (dress, sports jacket, etc.) worn item once to a party, and then returned purchase? This is called the one time fling. About 10% of all adults deliberately do one time fling and feel no guilt about it. In the group of seven adults friends, determine the probability that:
a. no one has done one time fling?b. at least one person has done one time fling?c. no more than two people have done one time fling?
The United States Postal Service reports that 95 percent of first class mail within the same city is delivered within two days of the time of mailing. Six of the letters are randomly sent to different locations.
Fitting of simple linear regression equation - A researcher wishes to determine whether a person's age is related to the number of hours he or she jogs per week.
Suppose that the mean of the annual return for common stocks from 2000 to 2012 was 8.5%, and the standard deviation of the annual return was 25.2%.
What is the underlying variable that indirectly correlates these 2 variables? What other variables could you identify as having an indirect relationship?
Find the probability that he will answer all 10 questions correctly.
Using a normal distribution with a mean of 1118 and a standard deviation of 52 for the weights of steers, what percent of steers weigh over 1250 pounds, under 1100 pounds, between 1000 and 1150 pounds.
A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be:
Tourism is one consideration for CoffeeTime's future, A survey of 1,233 visitors to mumbai last year revealed that 110 visited a small cafe during their visit.
An industrial engineer at Lyons Products would like to determine whether there are more units produced on the afternoon shift than on the morning shift.
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of q-hat?
Does the normal distribution yield a good approximation of the actual results?
A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate.
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