9th
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12th
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Mathematics

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Cecelia Mayer

3 years

Mathematics

9th -

12thgrade

Probability and Statistics Chapter 8, Lesson 1

Cecelia Mayer

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14 questions

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1. Multiple Choice
30 seconds
1 pt
What is the appropriate null hypothesis from this prompt?

At the Hawaii Pineapple Company, managers are interested in the size of the pineapples grown in the company's fields. Last year, the mean weight of the pineapples harvested from one large field was 31 ounces. A new irrigation system was installed in this field after the growing season. Managers wonder if the mean weight of pineapples grown in the field this year will be greater than last year. So they take an SRS of 50 pineapples from this year's crop.
$H_o:\ \mu\ =\ 31$
$H_o:\ \mu\ >\ 31$
$H_o:\ \mu\ <\ 31$
$H_o:\ p\ =\ 31$
2. Multiple Choice
30 seconds
1 pt
What is the appropriate alternative hypothesis from this prompt?

At the Hawaii Pineapple Company, managers are interested in the size of the pineapples grown in the company's fields. Last year, the mean weight of the pineapples harvested from one large field was 31 ounces. A new irrigation system was installed in this field after the growing season. Managers wonder if the mean weight of pineapples grown in the field this year will be greater than last year. So they take an SRS of 50 pineapples from this year's crop.
$H_A:\ \mu\ =\ 31$
$H_A:\ \mu\ >\ 31$
$H_A:\ \mu\ <\ 31$
$H_A:\ p\ =\ 31$
3. Multiple Choice
30 seconds
1 pt
What is the appropriate null hypothesis from this prompt?

The Survey of Study Habits and Attitudes is a psychological test that measures students' attitudes toward school and study habits. Scores range from 0 to 200. The mean score for US college students is about 115. A teacher suspects that older students have better attitudes toward school. She gives the SSHA to an SRS of 45 of the more than 1000 students at her college who are at least 30 years of age.
$H_o:\ \mu\ \ne\ 115$
$H_o:\ \mu\ >\ 115$
$H_o:\ \mu\ =\ 115$
$H_o:\ p\ =\ 115$
4. Multiple Choice
30 seconds
1 pt
What is the appropriate alternative hypothesis from this prompt?

The Survey of Study Habits and Attitudes is a psychological test that measures students' attitudes toward school and study habits. Scores range from 0 to 200. The mean score for US college students is about 115. A teacher suspects that older students have better attitudes toward school. She gives the SSHA to an SRS of 45 of the more than 1000 students at her college who are at least 30 years of age.
$H_A:\ \mu\ >\ 115$
$H_A:\ x-bar\ >\ 115$
$H_A:\ \mu\ =\ 115$
$H_A:\ p\ =\ 115$
5. Multiple Choice
30 seconds
1 pt
What is the appropriate null hypothesis from this prompt?

A Gallup Poll report revealed that 72% of teens said they seldom or never argue with their friends. Yvonne wonders whether this result holds true in her large high school. She surveys a random sample of 150 students at her school.
$H_o:\ p\ \ne\ 150$
$H_o:\ p\ =\ 0.72$
$H_o:\ p-hat\ =\ 0.72$
$H_o:\ p\ =\ 150$
6. Multiple Choice
30 seconds
1 pt
What is the appropriate alternative hypothesis from this prompt?

A Gallup Poll report revealed that 72% of teens said they seldom or never argue with their friends. Yvonne wonders whether this result holds true in her large high school. She surveys a random sample of 150 students at her school.
$H_A:\ p\ \ne\ 0.72$
$H_A:\ p-hat\ \ne\ 0.72$
$H_A:\ p-hat\ =\ 0.72$
$H_A:\ p\ =\ 150$
7. Multiple Choice
30 seconds
1 pt
What is the appropriate null hypothesis from this prompt?

Simon reads a newspaper report claiming that 12% of all adults in the US are left-handed. He wonders if this figure holds true at the large community college he attends. Simon chooses an SRS of 100 students and records whether each student is right- or left-handed.
$H_o:\ p\ \ne\ 0.12$
$H_o:\ p\ =\ 100$
$H_o:\ p-hat\ =\ 0.12$
$H_o:\ p\ =\ 0.12$
8. Multiple Choice
30 seconds
1 pt
What is the appropriate alternative hypothesis from this prompt?

Simon reads a newspaper report claiming that 12% of all adults in the US are left-handed. He wonders if this figure holds true at the large community college he attends. Simon chooses an SRS of 100 students and records whether each student is right- or left-handed.
$H_A:\ p\ \ne\ 0.12$
$H_A:\ p\ =\ 100$
$H_A:\ p-hat\ =\ 0.12$
$H_A:\ p\ =\ 0.12$
9. Multiple Choice
30 seconds
1 pt
When we interpret P-value, do we assume that the null or the alternative hypothesis is true?
The null hypothesis
The alternative hypothesis
10. Multiple Choice
30 seconds
1 pt
When we interpret P-value....
p-value is the probability of getting the __________ by chance.
data from the population
data from the sample
11. Multiple Choice
30 seconds
1 pt
If the P-value is greater than 0.05, what do we do?
Accept the null hypothesis
Fail to reject the null hypothesis
Reject the null hypothesis
12. Multiple Choice
30 seconds
1 pt
If the P-value is less than 0.05, what do we do?
Accept the null hypothesis
Fail to reject the null hypothesis
Reject the null hypothesis
13. Multiple Choice
30 seconds
1 pt
Let's say from a given sample the P-value was 0.203. What decision would we make?
Accept the null hypothesis
Fail to reject the null hypothesis
Reject the null hypothesis
14. Multiple Choice
30 seconds
1 pt
Let's say from a given sample the P-value was 0.0203. What decision would we make?
Accept the null hypothesis
Fail to reject the null hypothesis
Reject the null hypothesis
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