2.5 A confidence interval estimate is constructed around a. the degree of confidence b. the population parameter C. the population mean d. the point estimate

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2.5 A confidence interval estimate is constructed around
a. the degree of confidence
b. the population parameter
C. the population mean
d. the point estimate
2.6
The z value that is used to construct a 95% confidence interval is:
a. 2,58
b. 1.65
C.
1.96
d. 1.28
2.7
Which of the following is NOT a property of the student'st distribution?
a. It's exact shape (i.e., spread) is characterized by the degrees of freedom
b. It is symmetric
c. All of the above are properties of the t distribution
d. As the sample size grows, it gradually approaches the normal distribution
Transcribed Image Text:2.5 A confidence interval estimate is constructed around a. the degree of confidence b. the population parameter C. the population mean d. the point estimate 2.6 The z value that is used to construct a 95% confidence interval is: a. 2,58 b. 1.65 C. 1.96 d. 1.28 2.7 Which of the following is NOT a property of the student'st distribution? a. It's exact shape (i.e., spread) is characterized by the degrees of freedom b. It is symmetric c. All of the above are properties of the t distribution d. As the sample size grows, it gradually approaches the normal distribution
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