7.6 - Sampling Means

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

• 200
• 16
• 25
• 4

Tags

CCSS.HSS.ID.A.4

The mean and standard deviation of a population are 200 and 20, respectively. 
What is the probability of selecting 25 data values with a mean less than 190?

• 69%
• 0.6%
• 31%
• 99%

Tags

CCSS.HSS.ID.A.4

The mean and standard deviation of a population are 200 and 20, respectively. 
What is the probability of selecting 64 data values with a mean between 195 and 200?

• 41%%
• 48%
• 1.5%
• 0.5%

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.3

The mean and standard deviation of a population are 200 and 20, respectively. 
What is the probability of selecting 100 data values with a mean greater than 202?

• 45%
• 36%
• 25%
• 16%

Tags

CCSS.HSS.ID.A.4

The mean weight of potato chip bags is 10.5 ounces with a standard deviation of 3 ounces. A random sample of 40 bags of potato chips is selected. What is the probability that the mean of the sample is less than 10 ounces?

• P = -1.05
• P = .1469
• P = .0202
• P = .8531

The mean distance an OHS student travels to school is 5.6 miles with a standard deviation of 1.7 miles. Mrs. McLemore finds the mean of her 4th period class - a randomly selected sample of 29 students. What is the probability that the mean of her class is more than 6 miles?

• P = 0.00

• P = 0.1020

• P = 0.8980

• P = 1.27

The mean distance an OHS student travels to school is 5.6 miles with a standard deviation of 1.7 miles. Is it more likely to find one student that travels more than 6 miles to school or a mean of a sample of 29 students that travel more than 6 miles? 

• It is more likely to find 1 student that travels more than 6 miles to school
• It is more likely to find a sample of 29 students whose mean is greater than 6 miles
• Both equally likely
• There is not enough information to answer this question

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter
• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.IC.B.3

Sixty-two of the 97 passengers aboard the Hindenburg airship survived its explosion.

• parameter
• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

In a survey of a sample of computer users, 8% said their computer had a malfunction that needed to be repaired by a service technician.

• parameter
• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4