Intro to Sampling Distribution for Sample Means

The population mean of a particular dental procedure is $150 with standard deviation $23.45. An insurance company randomly selects 10 dental practices in California and asks for the cash (non-insurance) price for this procedure at each practice. What is the mean of the sampling distribution of the sample mean? Round to two decimal places. DON'T FORGET UNITS!

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

The population mean of a particular dental procedure is $150 with standard deviation $23.45. An insurance company randomly selects 10 dental practices in California and asks for the cash (non-insurance) price for this procedure at each practice. What is the STANDARD DEVIATION of the sampling distribution of the sample mean? Round to two decimal places. DON'T FORGET UNITS!

The distribution of heights for 16-year-old females is approximately Normal with population mean 64 inches and standard deviation 2.5 inches. A physician takes a random sample of 20 16-year-old females. What is the MEAN height of the sampling distribution of the sample mean? Round to two decimal places. DON'T FORGET UNITS!

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

The distribution of heights for 16-year-old females is approximately Normal with population mean 64 inches and standard deviation 2.5 inches. A physician takes a random sample of 20 16-year-old females. What is the STANDARD DEVIATION height of the sampling distribution of the sample mean? Round to two decimal places. DON'T FORGET UNITS!

Below are sampling distributions for 4 different statistics. Which statistics are UNBIASED estimators? SELECT ALL THAT APPLY.

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Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

Below are sampling distributions for 4 different statistics. Which statistic does the BEST job of estimating the parameter?

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Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

At Chipotle, the distribution of sodium content is approximately Normal with population mean 2000 mg and standard deviation 500 mg. Suppose Mrs. Hackett wants to take a bunch of random samples to investigate this. For which of the following sampling distributions would she get a MEAN closest to the TRUE POPULATION MEAN?

• Samples of size 100

• Samples of size 50

• Samples of size 25

• All of these sample sizes

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

CCSS.HSS.MD.B.5

At Chipotle, the distribution of sodium content is approximately Normal with population mean 2000 mg and standard deviation 500 mg. Suppose Mrs. Hackett wants to take a bunch of random samples to investigate this. For which of the following sampling distributions would she get the SMALLEST standard deviation?

• Samples of size 100

• Samples of size 50

• Samples of size 25

• All of these sample sizes

Tags

CCSS.HSS.ID.A.4