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1. Which of the following formulas is used to calculate the population standard deviation? A. o = E(u – X)²/N C. s = D. a2 = E(X – )²/ N %3D B. ož: %3D %3D

1. Which of the following formulas is used to calculate the population standard deviation? A. o = E(u – X)²/N C. s = D. a2 = E(X – )²/ N %3D B. ož: %3D %3D

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Answer numbers 11-15
11. Which of the following formulas is used to calculate the population standard deviation? A. o을 3DΣ(u-X)2/N B. of = C. s = D. a? = E(X- H)²/ N %3D %3D 12. The Department of Health has the following data of the number of infected persons of Covid-19 in five high-risk areas in the country, 51, 89, 129, 215, and 297. Suppose samples of size 2 high-risk areas are drawn from this population, what example of the sampling distribution of the sample mean for normal population portrays the situation? A. variance is known B. variance is unknown C. standard deviation is small D. standard deviation is large 13. Given u = 88, X = 90 s = 2, and n = 15. This is an example of the sampling distribution of the sample mean for a normal population when the population variance is A. unknown B. known C. large D. small 14. A researcher used to develop a problem-solving test to randomly selected 100 Grade 11 students. From this sample, the mean and standard deviation is 90 and 4 respectively. The mean of the population is 88. The researcher is in a situation of the sampling distribution of the sample mean wherein the population variance is A. unknown B. known C. large D. small 15. Given u = 54.2, o = 7.8, X =60.2 and n = 76. This is an example %3D of the sampling distribution of the sample mean for a normal population when the population variance is A. unknown B. known C. large D. smal
Transcribed Image Text:11. Which of the following formulas is used to calculate the population standard deviation? A. o을 3DΣ(u-X)2/N B. of = C. s = D. a? = E(X- H)²/ N %3D %3D 12. The Department of Health has the following data of the number of infected persons of Covid-19 in five high-risk areas in the country, 51, 89, 129, 215, and 297. Suppose samples of size 2 high-risk areas are drawn from this population, what example of the sampling distribution of the sample mean for normal population portrays the situation? A. variance is known B. variance is unknown C. standard deviation is small D. standard deviation is large 13. Given u = 88, X = 90 s = 2, and n = 15. This is an example of the sampling distribution of the sample mean for a normal population when the population variance is A. unknown B. known C. large D. small 14. A researcher used to develop a problem-solving test to randomly selected 100 Grade 11 students. From this sample, the mean and standard deviation is 90 and 4 respectively. The mean of the population is 88. The researcher is in a situation of the sampling distribution of the sample mean wherein the population variance is A. unknown B. known C. large D. small 15. Given u = 54.2, o = 7.8, X =60.2 and n = 76. This is an example %3D of the sampling distribution of the sample mean for a normal population when the population variance is A. unknown B. known C. large D. smal
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