Hickman t vs normal distribution ES
2 years ago
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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
    answer choices
    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?
    answer choices
    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?
    answer choices
    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?
    answer choices
    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
    answer choices
    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
    answer choices
    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
    answer choices
    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
    answer choices
    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
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 10
    60 seconds
    Q. What is not known in t distribution?
    answer choices
    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?
    answer choices
    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?
    answer choices
    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
    answer choices
    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
    answer choices
    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_____________________
    answer choices
    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
    answer choices
    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
    answer choices
    CV = 1.645 
    CV = 1.65
    CV =1.692
    none of these
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