A survey has been conducted recently to study the hourly wages of part-time employees at the Food Delivery services sector. The result was organized into the following frequency distribution. Hourly Wages Number of Part-time Employees $40 − less than $50 12 $50 − less than $60 26 $60 − less than $70 35 $70 − less than $80 17 $80 − less than $90 8 $90 − less than $100 2 (i) Estimate, from the frequency distribution, the probability that at most one of six randomly selected employees have an hourly wages greater than $75. (ii) Construct a 95% confidence interval for the population mean of hourly wages for all part-time employees in the Food Delivery service sector. State any assumptions you may have used
A survey has been conducted recently to study the hourly wages of part-time employees at the Food Delivery services sector. The result was organized into the following frequency distribution.
|
Hourly Wages
|
Number of Part-time Employees |
|
$40 − less than $50 |
12 |
|
$50 − less than $60 |
26 |
|
$60 − less than $70 |
35 |
|
$70 − less than $80 |
17 |
|
$80 − less than $90 |
8 |
|
$90 − less than $100 |
2 |
(i) Estimate, from the frequency distribution, the probability that at most one of six randomly selected employees have an hourly wages greater than $75.
(ii) Construct a 95% confidence interval for the population mean of hourly wages for all part-time employees in the Food Delivery service sector. State any assumptions you may have used.
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