4. The level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each of 992 senior managers at CPA firms. The mean of the level of support was 67.755 with a standard deviation of 26.871. It can be shown that level of support is approximately normally distributed a) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is less than 40 points. b) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is between 40 and 120 points. c) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is greater than 120 points d) One-fourth of the 992 senior managers indicated a level of support for corporate sustainability below what value?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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4. The level of support for corporate sustainability (measured on a quantitative scale ranging from
0 to 160 points) was obtained for each of 992 senior managers at CPA firms. The mean of the
level of support was 67.755 with a standard deviation of 26.871. It can be shown that level of
support is approximately normally distributed
a) Find the probability that the level of support for corporate sustainability of a randomly selected
senior manager is less than 40 points.
b) Find the probability that the level of support for corporate sustainability of a randomly selected
senior manager is between 40 and 120 points.
c) Find the probability that the level of support for corporate sustainability of a randomly selected
senior manager is greater than 120 points
d) One-fourth of the 992 senior managers indicated a level of support for corporate sustainability
below what value?
Transcribed Image Text:4. The level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each of 992 senior managers at CPA firms. The mean of the level of support was 67.755 with a standard deviation of 26.871. It can be shown that level of support is approximately normally distributed a) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is less than 40 points. b) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is between 40 and 120 points. c) Find the probability that the level of support for corporate sustainability of a randomly selected senior manager is greater than 120 points d) One-fourth of the 992 senior managers indicated a level of support for corporate sustainability below what value?
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