Hickman Student t vs normal distribution
2 years ago
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Practice
• Question 1
60 seconds
Q. What is not known in t distribution?
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?
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?
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?
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?
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
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
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
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?
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
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
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?
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
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
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?