Hickman Student t vs normal distribution
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15 QuestionsShow answers
  • Question 1
    60 seconds
    Q. What is not known in t distribution?
    answer choices
    population mean
    population standard deviation
    sample mean
    sample size
  • Question 2
    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 30
    less than 30
    greater than or equal to 30
    any number
  • Question 3
    60 seconds
    Q. What should the sample size be to use t distribution?
    answer choices
    greater than 30
    less than 30
    greater than or equal to 30
    less than or equal to 30
  • Question 4
    60 seconds
    Q. What should the sample size be to use z distribution?
    answer choices
    greater than 30
    less than 30
    greater than or equal to 30
    less than or equal to 30
  • Question 5
    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 30
    less than 30
    greater than or equal to 30
    any number
  • Question 6
    60 seconds
    Q. You know the population 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 12
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 7
    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 12
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 8
    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 32
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 9
    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 30
    less than 30
    greater than or equal to 30
    any number
  • Question 10
    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 12
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 11
    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 12
    answer choices
    t distribution
    z distribution
    either distribution
    none of these
  • Question 12
    60 seconds
    Q. When will the bell curves for t and z distribution look the same?
    answer choices
    the smaller the sample size
    the larger the sample size
    when the sample sizes are the same
    when the sample size is one
  • Question 13
    60 seconds
    Q. You are building a confidence interval, n is 32, your sample SD is 10, and you want to build a 95% confidence interval, then which of the statements is true
    answer choices
    CV = 1.96 E =3.465
    CV = 2.262 E = 3.999
    CV = 2.228 E =3.939
    none of these
  • Question 14
    60 seconds
    Q. You are building a confidence interval, n is 32, your population SD is 10, and you want to build a 95% confidence interval, then which of the statements is true
    answer choices
    CV = 1.96 E =3.465
    CV = 2.262 E = 3.999
    CV = 2.228 E =3.939
    none of these
  • Question 15
    60 seconds
    Q. You are using t distribution to build a confidence interval and you want to know when you need to use the graphing calculator versus when you need to use the chart?  Which of the following cannot be found using the t chart that you were given in class?
    answer choices
    n = 12, CL =90%
    n = 12, CL = 80%
    n = 60, CL = 90%
    n= 71, CL = 98%
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