Chapter 1. Two-Sample Problems: Proportions

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Stat Tutor
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Questions 1-3

1:52

Question 1.1

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Incorrect. Proportions are used to numerically summarize categorical data. With two separate sets of categorical data, two proportions are compared—one for each data set.
Correct. Proportions are used to numerically summarize categorical data. With two separate sets of categorical data, two proportions are compared—one for each data set.
Incorrect. Try again.
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Question 1.2

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Incorrect. Two population proportions are compared by comparing their difference with zero.
Correct. Two population proportions are compared by comparing their difference with zero.
Incorrect. Try again.
2

Question 1.3

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Incorrect. \(\widehat{p}_{1}\) - \(\widehat{p}_{2}\) represents the difference between two sample proportions.
Correct. \(\widehat{p}_{1}\) - \(\widehat{p}_{2}\) represents the difference between two sample proportions.
Incorrect. Try again.
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Question 4

4:10

Question 1.4

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Incorrect. This is a correct statement.
Correct. This is a correct statement.
Incorrect. Try again.
2

Question 5

5:05

Question 1.5

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Incorrect. This is a true statement.
Correct. This is a true statement.
Incorrect. Try again.
2

Question 6

6:21

Question 1.6

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Incorrect. \(\widehat{p}_{1}\) and \(\widehat{p}_{2}\) conditionals because they are computed from information in their respective rows.
Correct. \(\widehat{p}_{1}\) and \(\widehat{p}_{2}\) conditionals because they are computed from information in their respective rows.
Incorrect. Try again.
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