Which of these is the null hypothesis?

There will be no change in the test scores

Select the correct answer.

The mean decreases, the standard deviation decreases

studbud

Chapter 8 Data Analysis and Statistics

17 termsStudBud Administration83 plays

Test is an HMH Chapter 8 Assessment for Data Analysis and Statistics. A great review assessment piece.

Flashcards17 cardsFPractice quizPHost liveL

Questions 17

Answers

1
What is the range for the percentage of voters who plan to vote for the incumbent?
43% to 57%
47% to 57%
43% to 48%
47% to 52%
2
Which of these is the null hypothesis?
The test scores will improve
There will be no change in the test scores
The student will pass all his tests.
The test scores will go down
3
What is the range for the percentage of 8th graders who prefer going to a newer high school?
58% to 67%
49% to 67%
33% to 67%
49% to 58%
4
solve the following problem.
0.014
0.173
0.205
0.051
5
What is the expected number of piglets per litter on this farm?
5.2
4.8
5.0
5.8
6
What type of sample is this?
cluster
self-selected
stratified
convenience
7
Which is the experimental group?
The 80 in the focus group
The 40 that get the new model
Everyone who buys computers
The 40 that get the old model
8
What is the data-gathering technique used?
experiment
observational study
voluntary survey
randomized survey
9
What type of sample is this?
cluster
systematic
stratified
self-selected
10
What is the approximate standard deviation of the data set?
1.2
2.4
11
What is the mean of the data set {0, 2, 4, 8, 16, 36} ?
11.0
12.0
8.0
13.2
12
Solve the following problem.
11,950
9,000
1,500
350
13
Which could be the data the weatherperson recorded?
{0, 1, 1, 2, 4, 4, 6}
{0, 0, 1, 2, 2, 4, 6}
14
What is the approximate variance of the data set {0, 0, 1, 2, 3}?
1.17
2.34
2.72
1.36
15
Select the correct answer.
The mean increases, the standard deviation increases
The mean decreases, the standard deviation increases
The mean decreases, the standard deviation decreases
The mean increases, the standard deviation decreases
16
What is z if x = 25, μ = 22, σ = 6, and n = 9?
-2.5
-1.5
2.5
1.5
17
Solve the following problem.
All the students in the school
All the students that do not like the mascot
120 students
All the students that like the mascot

Chapter 8 Data Analysis and Statistics Flashcards | StudBud