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...


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

Extracted 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?

Jun 01, 2022
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