 Hickman t vs normal distribution ES
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Practice 17 QuestionsShow answers
• Question 1
60 seconds
Q. You are building a confidence interval, n is 33, your sample SD is 15, and you want to build a 90% confidence interval, then which of the statements is true
CV = 1.645
CV = 1.692
CV =1.694
none of these
• Question 2
60 seconds
Q. What should the sample size be to use z distribution if you know that the data is normally distributed?
greater than 31
less than 31
greater than or equal to 31
any number
• Question 3
60 seconds
Q. What should the sample size be to use z distribution?
greater than 29
less than 31
greater than or equal to 30
none of these
• Question 4
60 seconds
Q. What should the sample size be to use t distribution?
greater than 29
less than 31
greater than or equal to 31
less than or equal to 31
• Question 5
60 seconds
Q. You know the population SD and the sample mean, you should use_____________ build a confidence interval for the population mean, if your sample size is 30
t distribution
z distribution
either distribution
none of these
• Question 6
60 seconds
Q. You know the population SD and the sample mean, you should use_____________ build a confidence interval for the population mean, if your sample size is 31
t distribution
z distribution
either distribution
none of these
• Question 7
60 seconds
Q. You are building a confidence interval, n is 10, your sample SD is 32, and you want to build a 95% confidence interval, then which of the statements is true
CV = 1.96
CV = 2.262
CV = 2.04
none of these
• Question 8
60 seconds
Q. You know the sample SD and the sample mean, you should use_____________ build a confidence interval for the population mean, if your sample size is 31
t distribution
z distribution
either distribution
none of these
• Question 9
60 seconds
Q. You know the population SD and the sample mean, you should use_____________ build a confidence interval for the population mean, if your sample size is 30
t distribution
z distribution
either distribution
none of these
• Question 10
60 seconds
Q. What is not known in t distribution?
population mean
population standard deviation
sample mean
sample size
• Question 11
60 seconds
Q. What should the sample size be to use t distribution if you know the data is normally distributed?
greater than 32
less than 29
greater than or equal to 31
any number
• Question 12
60 seconds
Q. What should the sample size be to use z distribution if you know the data is normally distributed?
greater than 31
less than 31
greater than or equal to 31
any number
• Question 13
60 seconds
Q. You know the population SD and the sample mean, you should use_____________ build a confidence interval for the population mean, if your sample size is 29
t distribution
z distribution
either distribution
none of these
• Question 14
60 seconds
Q. You know the sample SD and the sample mean, and you know the data is normally distributed, you should use_____________ build a confidence interval for the population mean, if your sample size is 29
t distribution
z distribution
either distribution
none of these
• Question 15
60 seconds
Q. If the sample size is LARGE, the z and t distribution_____________________
are significantly different
off by 0.30
approximately the same
none of these
• Question 16
60 seconds
Q. You are building a confidence interval, n is 10, your sample SD is 32, and you want to build a 95% confidence interval, then which of the statements is true IF we know that the data is normally distributed
CV = 1.96
CV = 2.262
CV = 2.04
none of these
• Question 17
60 seconds
Q. You are building a confidence interval, n is 33, your population SD is 15, and you want to build a 90% confidence interval, then which of the statements is true