Question

A student at a four-year college claims that average enrollment at four-year colleges is higher than...

A student at a four-year college claims that average enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 two-year colleges surveyed, the average enrollment was 5066 with a standard deviation of 4775. Of the 35 four-year colleges surveyed, the average enrollment was 5516 with a standard deviation of 8131. Conduct a hypothesis test at the 5% level. NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) State the distribution to use for the test. (Enter your answer in the form z or tdf where df is the degrees of freedom. Round your answer to two decimal places.) Part (e) What is the test statistic? (Round your answer to two decimal places.) t = Part (f) What is the p-value? (Round your answer to four decimal places.)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A student at a four-year college claims that average enrollment at four-year colleges is higher than...
A student at a four-year college claims that average enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 two-year colleges surveyed, the average enrollment was 5066 with a standard deviation of 4774. Of the 35 four-year colleges surveyed, the average enrollment was 5416 with a standard deviation of 8141. Conduct a hypothesis test at the 5% level. NOTE: If you are using a Student's t-distribution for the problem,...
A student at a four-year college claims that average enrollment at four-year colleges is higher than...
A student at a four-year college claims that average enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 two-year colleges surveyed, the average enrollment was 5062 with a standard deviation of 4773. Of the 35 four-year colleges surveyed, the average enrollment was 5366 with a standard deviation of 8171. Conduct a hypothesis test at the 5% level. NOTE: If you are using a Student's t-distribution for the problem,...
1) A student at a four-year college claims that mean enrollment at four-year colleges is higher...
1) 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 5,466 with a standard deviation of 8,191. Of the 35 two-year colleges surveyed, the mean enrollment was 5,068 with a standard deviation of 4,777. Test the student's claim at the 0.10 significance level. a) The null and alternative hypothesis would be: H0:pF=pTH0:pF=pT...
The mean number of English courses taken in a two-year time period by male and female...
The mean number of English courses taken in a two-year time period by male and female college students is believed to be about the same. An experiment is conducted and data are collected from 29 males and 16 females. The males took an average of three English courses with a standard deviation of 0.7. The females took an average of four English courses with a standard deviation of 1.1. Are the means statistically the same? (Use α = 0.05) NOTE:...
Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed...
Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical engineering degrees are believed to be approximately the same. A recruiting office thinks that the mean mechanical engineering salary is actually lower than the mean electrical engineering salary. The recruiting office randomly surveys 50 entry level mechanical engineers and 52 entry level electrical engineers. Their mean salaries were $46,200 and $46,700, respectively. Their standard deviations were $3440 and $4230, respectively. Conduct a hypothesis test at the 5% level...
Parents of teenage boys often complain that auto insurance costs more, on average, for teenage boys...
Parents of teenage boys often complain that auto insurance costs more, on average, for teenage boys than for teenage girls. A group of concerned parents examines a random sample of insurance bills. The mean annual cost for 36 teenage boys was $673. For 23 teenage girls, it was $558. From past years, it is known that the population standard deviation for each group is $180. Determine whether or not you believe that the mean cost for auto insurance for teenage...
Private nonprofit four-year colleges charge, on average, $27,629 per year in tuition and fees. The standard...
Private nonprofit four-year colleges charge, on average, $27,629 per year in tuition and fees. The standard deviation is $6,833. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( ____ , ____ ) b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 31,217 per year. ______. round to 4...
Private nonprofit four-year colleges charge, on average, $26,516 per year in tuition and fees. The standard...
Private nonprofit four-year colleges charge, on average, $26,516 per year in tuition and fees. The standard deviation is $7,429. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(,) b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 22,272 per year. c. Find the 62nd percentile for this distribution....
Private nonprofit four-year colleges charge, on average, $26,013 per year in tuition and fees. The standard...
Private nonprofit four-year colleges charge, on average, $26,013 per year in tuition and fees. The standard deviation is $6,728. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(___,___) b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 28,730 per year. c. Find the 63rd percentile for this distribution....
Private nonprofit four-year colleges charge, on average, $27,025 per year in tuition and fees. The standard...
Private nonprofit four-year colleges charge, on average, $27,025 per year in tuition and fees. The standard deviation is $7,267. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(,) b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 22,077 per year. c. Find the 64th percentile for this distribution....