Question: Using the data provided in Example 2-1, determine (a) the mean and variance, (b) the frequency as a function of the response, and (c) the

Using the data provided in Example 2-1, determine

(a) the mean and variance,

(b) the frequency as a function of the response, and

(c) the number affected as a function of the response. Also,

(d) show graphs for the frequency and number affected.

Example 2-1 Seventy-five people are tested for skin irritation due to of a specific dose of a substance. The responses are recorded on a scale from 0 to 10, with 0 indicating no response and 10 indicating a high response. The number of individuals exhibiting a specific response is given in the following table: Response Number of individuals affected 0 123 45 679 8 9 10 0 5 10 13 13 11 9 6 3 3 2 Total 75 a. Plot a histogram of the number of individuals affected versus the response. b. Determine the mean and the standard deviation. c. Plot the normal distribution on the histogram of the original data.

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