Population and Sample Mean

What is another word for AVERAGE?

• Mode

• Median

• Mean

• Not nice

Calculate the MEAN:

23, 15, 8, 12, 26, 5, 22, 9

• 17.1

• 15

• 13.3

• 12

Calculate the MEAN:

• 82.2

• 92

• 67.2

• 74

How do you find the MEAN?

• Add the numbers together, then subtract the quantity of numbers

• Add the numbers together, then multiply the quantity of numbers

• Add the numbers together, then divide by the quantity of numbers

• 50

• 25

• 20

• 5

The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25. 
What is the mean of the sampling distribution?

• 200

• 16

• 25

• 4

The mean of the sampling distribution is the same as the mean of the population.

• True

• False

The average speed of 1500 vehicles traveling on a stretch of highway one particular day is 67 miles per hour with a standard deviation of 3.5 miles per hour. If 100 vehicles are randomly selected as samples, what would be the mean of the resulting sampling distribution of sample means?

• 63.5

• 67

• 70.5

• 74

The mean of a population is μ = 200 the standard deviation is σ = 20. Random samples of size 25 are taken from this population.

What is the mean of the sampling distribution?

• 200

• 16

• 25

• 4

The mean of the sampling distribution for average taxi fare where the sample size is 25 is _____.