The weekly salary paid to employees of a small company that supplies part-time laborers averages $850 with a standard deviation of $450. (a) If the weekly salaries are normally distributed, estimate the fraction of employees that make more tha $400 per week. (b) If every employee receives a year-end bonus that adds $100 to the paycheck in the final week, how d this change the normal model for that week? (c) If every employee receives a 5% salary increase for the next year, how does the normal model chang

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The weekly salary paid to employees of a small company that supplies part-time laborers averages $850
with a standard deviation of $450.
(a) If the weekly salaries are normally distributed, estimate the fraction of employees that make more than
$400 per week.
(b) If every employee receives a year-end bonus that adds $100 to the paycheck in the final week, how does
this change the normal model for that week?
(c) If every employee receives a 5% salary increase for the next year, how does the normal model change?
(d) If the lowest salary is $400 and the median salary is $625, does a normal model appear appropriate?
(a) If the weekly salaries are normally distributed, the fraction of employees that make more than $400 per
week is approximately 0.8413
(Type an integer or a fraction.
Transcribed Image Text:The weekly salary paid to employees of a small company that supplies part-time laborers averages $850 with a standard deviation of $450. (a) If the weekly salaries are normally distributed, estimate the fraction of employees that make more than $400 per week. (b) If every employee receives a year-end bonus that adds $100 to the paycheck in the final week, how does this change the normal model for that week? (c) If every employee receives a 5% salary increase for the next year, how does the normal model change? (d) If the lowest salary is $400 and the median salary is $625, does a normal model appear appropriate? (a) If the weekly salaries are normally distributed, the fraction of employees that make more than $400 per week is approximately 0.8413 (Type an integer or a fraction.
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