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X~ N(70, 11). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let EX be the random variable of sums. O Part (a) Sketch the distributions of X and X on the same graph. 60 65 70 75 80 85 55 60 65 70 75 80 85 X 60 65 70 75 80 85 O 55 60 65 70 75 80 85 Part (b) Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) X -Dv (00) n O Part (c) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) PX < 70) = O Bart (d)

X~ N(70, 11). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let EX be the random variable of sums. O Part (a) Sketch the distributions of X and X on the same graph. 60 65 70 75 80 85 55 60 65 70 75 80 85 X 60 65 70 75 80 85 O 55 60 65 70 75 80 85 Part (b) Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) X -Dv (00) n O Part (c) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) PX < 70) = O Bart (d)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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X~ N(70, 11). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let EX be the random variable of sums. O Part (a) Sketch the distributions of X and X on the same graph. 55 60 65 70 75 80 85 O 55 60 65 70 75 80 85 O 55 60 65 70 75 80 85 55 60 65 70 75 80 85 O Part (b) Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) X -n (O-0) O Part (c) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) PX< 70) = O Part (d) Find the 40th percentile. (Round your answer to two decimal places.) O Part (e) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(66 < X< 72) = | O Part () Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(28 <X< 66) = O Part (g) Give the distribution of EX. O Part (h) Find the minimum value for the upper quartile for EX. (Round your answer to two decimal places.) O Part (i) Sketch the graph, shade the region, label and scale the horizontal axis for EX, and find the probability. (Round your answer to four decimal places.) P(1650 < EX< 1800) = |
Transcribed Image Text:X~ N(70, 11). Suppose that you form random samples of 25 from this distribution. Let X be the random variable of averages. Let EX be the random variable of sums. O Part (a) Sketch the distributions of X and X on the same graph. 55 60 65 70 75 80 85 O 55 60 65 70 75 80 85 O 55 60 65 70 75 80 85 55 60 65 70 75 80 85 O Part (b) Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) X -n (O-0) O Part (c) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) PX< 70) = O Part (d) Find the 40th percentile. (Round your answer to two decimal places.) O Part (e) Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(66 < X< 72) = | O Part () Sketch the graph, shade the region, label and scale the horizontal axis for X, and find the probability. (Round your answer to four decimal places.) P(28 <X< 66) = O Part (g) Give the distribution of EX. O Part (h) Find the minimum value for the upper quartile for EX. (Round your answer to two decimal places.) O Part (i) Sketch the graph, shade the region, label and scale the horizontal axis for EX, and find the probability. (Round your answer to four decimal places.) P(1650 < EX< 1800) = |
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