1. What is 15% of 1000? 2. A store is offering a 15% off sale on all TVs. The most popular television is normally priced at $1000. How much money would a customer save on the television during this sale? the first question is asked of 200 randomly selected college students, with 165 answering correctly; the second one is asked of a different random sample of 200 college students, resulting in 143 correct es. Carry out a test of hypotheses at significance level 0.05 to decide if the true proportion of correct responses to the question without context exceeds that for the one with context. (Use p, for the true proportion who answered the question without context correctly and p₂ for the true proportion f students who answered the question with context correctly.) USE SALT

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
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Author:Carter
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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4CGP
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Question
Calculate the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)
Z =
P-value =
State the conclusion in the problem context.
O Reject Ho. The data does not suggest the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one.
O Fail to reject Ho. The data suggests the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one.
O Fail to reject Ho. The data does not suggest that the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one.
O Reject Ho. The data suggests that the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one.
Transcribed Image Text:Calculate the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) Z = P-value = State the conclusion in the problem context. O Reject Ho. The data does not suggest the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one. O Fail to reject Ho. The data suggests the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one. O Fail to reject Ho. The data does not suggest that the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one. O Reject Ho. The data suggests that the true proportion of correct answers to the context-free question is higher than the proportion of right answers to the contextual one.
Consider the following two questions designed to assess quantitative literacy.
1. What is 15% of 1000?
2. A store is offering a 15% off sale on all TVs. The most popular television is normally priced at $1000. How much money would a customer save on the television during this sale?
Suppose the first question is asked of 200 randomly selected college students, with 165 answering correctly; the second one is asked of a different random sample of 200 college students, resulting in 143 correct
responses. Carry out a test of hypotheses at significance level 0.05 to decide if the true proportion of correct responses to the question without context exceeds that for the one with context. (Use p₁ for the true proportion
students who answered the question without context correctly and p₂ for the true proportion of students who answered the question with context correctly.)
State the relevant hypotheses.
Ho: P₁ P₂ = 0
Ha: P₁
P₂ #0
Ho: P₁
Ha: P₁
Ho: P₁
Ha: P₁
Ho: P₁
Ha: P₁
USE SALT
O Ho: P₁
Ha: P₁
P₂ = 0
P₂ > 0
P₂ <0
P₂ = 0
P₂ = 0
P₂ <0
P₂ > 0
P₂ = 0
Transcribed Image Text:Consider the following two questions designed to assess quantitative literacy. 1. What is 15% of 1000? 2. A store is offering a 15% off sale on all TVs. The most popular television is normally priced at $1000. How much money would a customer save on the television during this sale? Suppose the first question is asked of 200 randomly selected college students, with 165 answering correctly; the second one is asked of a different random sample of 200 college students, resulting in 143 correct responses. Carry out a test of hypotheses at significance level 0.05 to decide if the true proportion of correct responses to the question without context exceeds that for the one with context. (Use p₁ for the true proportion students who answered the question without context correctly and p₂ for the true proportion of students who answered the question with context correctly.) State the relevant hypotheses. Ho: P₁ P₂ = 0 Ha: P₁ P₂ #0 Ho: P₁ Ha: P₁ Ho: P₁ Ha: P₁ Ho: P₁ Ha: P₁ USE SALT O Ho: P₁ Ha: P₁ P₂ = 0 P₂ > 0 P₂ <0 P₂ = 0 P₂ = 0 P₂ <0 P₂ > 0 P₂ = 0
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