Answer to Question #344063 in Statistics and Probability for Khadar

Question

5. Given the following data, (A) Find the median, quartiles and semi-interquartile range, (B) Find the 8 ^ (th) deciles and 85 ^ (th) percentiles.

1976, 2162, 1502, 1782, 1523, 2033 1564, 20, 19 , 1714, 1841 1648, 1 1345, 1837, 1718, 2047, 1954, 2000, 1479, 2571, 1739, 1781

6. Two neighbors work at the same place. One travels to work by bus, the other cycles to work. The times taken (in minutes) by each transport to get to work on a sample of 8 days were given as follows:

Bus-33, 28, 40, 32, 41, 32, 38, 42

Cyclist-26, 33, 27, 31, 31, 30, 28, 24

Required: Calculate the mean and standard deviation for each set of times and use them to compare the travel times for the two commuters.

7. An electrical goods retailer sold video recorders to 8200 customers last year and extended warranties to 3500 of these customers. When the retailer sells a video recorder, what is the probability that:

A. The customer will buy an extended warranty?

B. The customer will not buy an extended warranty?

Answer 1

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