The annual salaries of employees in a large company are normally distributed with a mean of $50,000 and a standard deviation of $20,000. What percentage of people earn between $45,000 and $65,000? [show steps]
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The annual salaries of employees in a large company are approximately normally distributed with a mean of $50,000 and a standard deviation of $20,000. a) What percent of people earn less than $40,000? b) What percent of people earn between $45,000 and $65,000? c) What percent of people earn more than $70,000?
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The annual salaries of employees in a large company are approximately normally distributed with a mean of $ 50,000 and a standard deviation of $ 20,000. 1) what percent of people earn less than $ 40,000? 2) what percent of people earn between $ 45,000 and $ 65,000? 3) what percent of people earn more than $ 70,000?
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Suppose the annual employer $401(\mathrm{k})$ cost per participant is normally distributed with a standard deviation of $\$ 625$, but the mean is unknown. a. If $73.89 \%$ of such costs are greater than $\$ 1,700,$ what is the mean annual employer $401(\mathrm{k})$ cost per participant? b. Suppose the mean annual employer $401(\mathrm{k})$ cost per participant is $\$ 2,258$ and the standard deviation is $\$ 625 .$ If such costs are normally distributed, $31.56 \%$ of the costs are greater than what value?
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