ravenmcfarlandp07okx
20.03.2020 •
Mathematics
Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four cars; twelve generally sell five cars; nine generally sell six cars; eleven generally sell seven cars.Calculate the following.
sample mean = x
x = cars
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Ответ:
Given information:
There are total 65 randomly selected car salespersons
x = the number of cars sold in one week
x | Frequency
3 14
4 19
5 12
6 9
7 11
Required information:
Find the sample mean = ?
sample mean = 4.75
Step-by-step explanation:
The sample mean is calculated as
sample mean = (3*14+4*19+5*12+6*9+7*11)/65
sample mean = 309/65
sample mean = 4.75
Therefore, the mean number of cars sold in one week is 4.75 or ≈ 5
Ответ:
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Step-by-step explanation: