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"Suppose we have a simple random sample comprised of the following data: 12, 46, 22, 21,...

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Advance Math

"Suppose we have a simple random sample comprised of thefollowing data: 12, 46, 22, 21, 7. What is the point estimate ofthe population standard deviation?"

15.01

21

21.6

None of the above

Lots of things impact sampling error. Which one of the followingdoes not?

the variability of the population.

the expected value of the sample statistic

the sample size.

the sampling method used.

"Given the information provided, what is the probability ofobtaining a sample mean within +/- 2 of the population mean?Population information: mean = 425, and standard deviation = 25.Sample size is 210."

0.9332.

0.123.

0.754.

0.877.

A sample size of 95 is selected from a population with theproportion equal to 0.41. The sample proportion has an expectedvalue of __ and standard deviation of __.

0.41 and .0505

0.41 and 0.41

41 and 0.0505

41 and 0.41

The CEO of Snapchat thinks that 65% of users are under the ageof 25. A simple random sample of 70 users will be used to estimatethe proportion of those under the age of 25. What is theprobability the sample proportion will be between 0.6286 and0.6714?

0.648

0.296

0.352

0.65

Answer & Explanation Solved by verified expert
4.0 Ratings (725 Votes)
1Correct option1501ExplanationSD of the given data set 15012Correct optionthe variability of the    See Answer
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