Mathematics, 11.12.2019 21:31 lokijuhygtfrdfghj
With individual lines at the checkouts, a store manager finds that the standard deviation for the waiting times on monday mornings is 5.2 minutes. after switching to a single waiting line, he finds that for a random sample of 29 customers, the waiting times have a standard deviation of 4.3 minutes. assume that line waiting times on mondays are normally distributed. use a 0.05 significance level to test whether the standard deviation of the waiting times using a single line differs from 5.2 minutes.
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Benjamin is making bow ties. how many 1/2yards lomg bow ties can he make if he has 18 feet of fabric?
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Mathematics, 21.06.2019 23:30
Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?
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Mathematics, 22.06.2019 02:30
Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.
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Mathematics, 22.06.2019 03:00
Which of these phrases uses parallelism to create a sad tone?
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With individual lines at the checkouts, a store manager finds that the standard deviation for the wa...
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