A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 6,146 with a standard deviation of 510. Of the 35 two-year colleges surveyed, the mean enrollment was 5,086 with a standard deviation of 598. Test the student's claim at the 0.1 significance level.
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 6,146 with a standard deviation of 510. Of the 35 two-year colleges surveyed, the mean enrollment was 5,086 with a standard deviation of 598. Test the student's claim at the 0.1 significance level.
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![**Title: Analyzing Claims on College Enrollments**
---
**Introduction:**
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 6,146 with a standard deviation of 510. Of the 35 two-year colleges surveyed, the mean enrollment was 5,086 with a standard deviation of 598. We test the student's claim at the 0.1 significance level.
---
**Preliminary:**
a. **Assumptions:**
Is it safe to assume that:
- \( n_{4yr} \leq 5\% \) of all students enrolled at a 4-year college in the United States and
- \( n_{2yr} \leq 5\% \) of all enrolled at a 2-year college in the United States?
Choices:
- No
- Yes
b. **Sample Size:**
Is \( n_{4yr} \geq 30 \) and \( n_{2yr} \geq 30 \)?
Choices:
- No
- Yes
---
**Test the Claim:**
a. **Hypotheses:**
Determine the null and alternative hypotheses.
- \( H_0: \mu_{4yr} \leq \mu_{2yr} \)
- \( H_a: \mu_{4yr} > \mu_{2yr} \)
b. **Test Statistic:**
Determine the test statistic. **Round to four decimal places.**
- \( t = \underline{\hspace{2cm}} \)
c. **p-Value:**
Find the p-value. **Round to 4 decimals.**
- p-value = \(\underline{\hspace{2cm}}\)
d. **Decision:**
Make a decision:
- Fail to reject the null hypothesis.
- Reject the null hypothesis.
e. **Conclusion:**
Write the conclusion:
- There is not sufficient evidence to support the claim that enrollment is higher at a four-year college than a two-year college.
- There is sufficient evidence to support the claim that enrollment is higher at a four-year college than a two-year college.
---
**Conclusion:**
This guide outlines the process of evaluating a claim about college enrollments using hypothesis testing. Follow the steps above to assess the validity of claims using](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F443e45af-3927-4fd9-baca-290567a407b3%2F0adfc6d9-bfd5-4c74-a799-24c6be535b93%2F8x7pdqc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Title: Analyzing Claims on College Enrollments**
---
**Introduction:**
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 6,146 with a standard deviation of 510. Of the 35 two-year colleges surveyed, the mean enrollment was 5,086 with a standard deviation of 598. We test the student's claim at the 0.1 significance level.
---
**Preliminary:**
a. **Assumptions:**
Is it safe to assume that:
- \( n_{4yr} \leq 5\% \) of all students enrolled at a 4-year college in the United States and
- \( n_{2yr} \leq 5\% \) of all enrolled at a 2-year college in the United States?
Choices:
- No
- Yes
b. **Sample Size:**
Is \( n_{4yr} \geq 30 \) and \( n_{2yr} \geq 30 \)?
Choices:
- No
- Yes
---
**Test the Claim:**
a. **Hypotheses:**
Determine the null and alternative hypotheses.
- \( H_0: \mu_{4yr} \leq \mu_{2yr} \)
- \( H_a: \mu_{4yr} > \mu_{2yr} \)
b. **Test Statistic:**
Determine the test statistic. **Round to four decimal places.**
- \( t = \underline{\hspace{2cm}} \)
c. **p-Value:**
Find the p-value. **Round to 4 decimals.**
- p-value = \(\underline{\hspace{2cm}}\)
d. **Decision:**
Make a decision:
- Fail to reject the null hypothesis.
- Reject the null hypothesis.
e. **Conclusion:**
Write the conclusion:
- There is not sufficient evidence to support the claim that enrollment is higher at a four-year college than a two-year college.
- There is sufficient evidence to support the claim that enrollment is higher at a four-year college than a two-year college.
---
**Conclusion:**
This guide outlines the process of evaluating a claim about college enrollments using hypothesis testing. Follow the steps above to assess the validity of claims using
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