Author:
Christine Farr

Part 5 of 9 Question 13 of 251.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation,a period MUST be used as the decimal point marker.Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.The following data represent the number of children in a sample of 10 families from Chicago: 4, 2, 1, 1, 5,3, 0, 1, 0, and 2.Compute the variance of the data. Place your answer, rounded to two decimal places, in the blank. Forexample, 3.45 would be a legitimate entry.Part 6 of 9 Question 14 of 251.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation,a period MUST be used as the decimal point marker.Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.The following data were obtained from a survey of college students. The variable X represents the numberof non-assigned books read during the past six months.xP (X=x)00.5510.1520.1030.1040.0450.0360.03Find P(1 < X < 5). Place your answer, rounded to two decimal places in the blank. For example, 0.56would be a legitimate entry.Question 15 of 251.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces(e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation,a period MUST be used as the decimal point marker.Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.

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