Suppose that the scores on a statewide standardized test have a bell shape distribution with a mean of 80 and a standard deviation of 3. Estimate the percentage of scores that were (a) between 71 and 89. (b) above 83. (c) below 71. (d) between 77 and 89. % Submit Question

MATLAB: An Introduction with Applications
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Question 8
Suppose that the scores on a statewide standardized test have a bell shape distribution with a mean of 80
and a standard deviation of 3. Estimate the percentage of scores that were
(a) between 71 and 89.
(b) above 83.
(c) below 71.
(d) between 77 and 89.
Submit Question
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Transcribed Image Text:Question 8 Suppose that the scores on a statewide standardized test have a bell shape distribution with a mean of 80 and a standard deviation of 3. Estimate the percentage of scores that were (a) between 71 and 89. (b) above 83. (c) below 71. (d) between 77 and 89. Submit Question 88°F A D hp inort sc 144 16 10 & 7 9. 4. 5
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Let X be the random variable from normal distribution with mean (μ) = 80 and standard deviation (σ) = 3

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