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A research center claims that \( 28 \% \) of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1100 adults in that country, \( 32 \% \) say that they would travel into space on a commercial flight if they could afford it. At \( \alpha=0.10 \), is there enough evidence to reject the research center's claim? Complete parts (a) through (c) below. A) Identify the claim and state \( \mathrm{H}_{0} \) and \( \mathrm{H}_{\mathrm{a}} \). Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) if they could afford it. B. No more than \( \square \) \% of adults in the country would travel into space on a commercial flight if they could afford it. C. At least \( \square \% \) of adults in the country would travel into space on a commercial flight if they could afford it. D. The percentage adults in the country who would travel into space on a commercial flight if they could afford it is not \( \square \% \).

Ask by Pierce Floyd. in the United States
Dec 19,2024

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**Part A: Identify the Claim and State \( \mathrm{H}_{0} \) and \( \mathrm{H}_{\mathrm{a}} \)** **Claim:** \( 28\% \) of adults in the country would travel into space on a commercial flight if they could afford it. **Hypotheses:** - **Null Hypothesis (\( \mathrm{H}_{0} \))**: \( p = 0.28 \) - **Alternative Hypothesis (\( \mathrm{H}_{\mathrm{a}} \))**: \( p \neq 0.28 \) **Summary:** - **Claim:** \( 28\% \) of adults would travel into space if they could afford it. - **\( \mathrm{H}_{0} \):** \( p = 0.28 \) - **\( \mathrm{H}_{\mathrm{a}} \):** \( p \neq 0.28 \) This establishes a two-tailed hypothesis test to assess whether the sample data supports rejecting the research center's claim at the \( \alpha = 0.10 \) significance level.

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The research center's claim is that \( 28\% \) of adults in the country would travel into space on a commercial flight if they could afford it. Thus, the null hypothesis \( H_0 \) is: \( p = 0.28 \) (where \( p \) is the true proportion of adults willing to travel into space), and the alternative hypothesis \( H_a \) is: \( p > 0.28 \). This indicates that we are testing if there is sufficient evidence to suggest that more than \( 28\% \) of adults would travel. So, the answer is: B. No more than \( 28 \) % of adults in the country would travel into space on a commercial flight if they could afford it.

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