This quiz is incomplete! To play this quiz, please finish editing it.
Delete Quiz
This quiz is incomplete! To play this quiz, please finish editing it.
15 QuestionsShow answers
Question 1
SURVEY
60 seconds
Q. What is not known in t distribution?
answer choices
population mean
population standard deviation
sample mean
sample size
Question 2
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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
SURVEY
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?