AP Statistics Chapter 8.1 and 8.2

AP Statistics Chapter 8.1 and 8.2

11th Grade - University

40 Qs

quiz-placeholder

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AP Statistics Chapter 8.1 and 8.2

AP Statistics Chapter 8.1 and 8.2

Assessment

Quiz

Mathematics

11th Grade - University

Hard

Created by

Barbara White

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40 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calculate the confidence interval for the population mean at the given level of confidence:  n = 65, σ = 3.14, x = 19.5, c = 0.80
(18.5, 20.5)
(19, 20)
(19.001, 19.999)
(18.9, 19.8)

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calculate the confidence interval for the population mean at the given level of confidence:  n = 846, σ = 1.04, x = 7.9, c = 0.90
(7.8412, 7.9588)
(6.999, 7.859)
(8.844, 9.544)
(5.999, 6.859)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If the confidence level is 90%, what is the associated critical z value (Za/2)?
2.557
-1.645
1.645
-2.557

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If a sample of 225 students have a mean test score of 90, what is the point estimate?
90.5
91
90
90.1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is required to create a t-distribution?
Population mean and sample mean
Population distribution and sample size
Z-interval 
Confidence interval

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If 656 randomly selected people spend a mean of $86 per week on lunch. What is the best point estimate for the mean amount of money spent per week on lunch for all 656 people?
$86
$67
$80
$68

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Value of t0.025 for a t-distribution with 25 degrees of freedom.
-2.060
2.060
1.555
-1.555

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