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The average student loan debt is reported to be $25,235. A student belives that the student...
The average student loan debt is reported to be $25,235. A student belives that the student loan debt is higher in...
The average student loan debt is reported to be $25,235. A student belives that the student loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean to be $27,524 and the standard devition to be $6000. Is there sufficient evidence to support the student' claim at a 5% significance level? a) Determine the null and alternative hypotheses. Ho: d = Ho: Select an answer (Put in the...
The average student-loan debt is reported to be $25,235. A student believes that the student-loan debt...
The average student-loan debt is reported to be $25,235. A student believes that the student-loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean student-loan debt is $27,524 and the standard deviation is $6,000. Is there sufficient evidence to support the student's claim at a 5% significance level? Preliminary: Is it safe to assume that n≤5% of all college students in the local area? Yes No Is...
At least 0.49 of car crashes occur within 2 miles of the motorists home. a) Express...
At least 0.49 of car crashes occur within 2 miles of the
motorists home.
a) Express the null and alternative hypotheses in symbolic form for
this claim.
Ho: p=
Ha:
Use the following codes to enter the following symbols:
≥≥ enter >=
≤≤ enter <=
≠≠ enter !=
b) You decide to survey 100 adult Americans and find that 10 of car
crashes occur within 2 miles of the motorists home. Find the test
statistic. Round to two decimal places....
n 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks...
n 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. H0: p= Ha: p Select an answer not = ,< ,> (Put in the correct symbol...
In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks...
In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. Ho: p = H:P Select an answer (Put in the correct symbol and value) b)...
A student at a four-year college claims that mean enrollment at four-year colleges is higher than...
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: O Hopp...
Suppose a university advertises that its average class size is 31 or less. A student organization...
Suppose a university advertises that its average class size is 31 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 42 classes was selected, and the average class size was found to be 33.8 students. Assume that the standard deviation for class size at the college is 88 students. Using alpha=0.05, complete parts a and b below. a. Does the student organization...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 ciasses was selected, and the average class size was found to be 36.2 students. Assume that the standard deviation for class size at the college is 8 students. Using a 0.05, complete parts a and b below a. Does the student...
A data set includes data from student evaluations of courses. The summary statistics are n=88, x=...
A data set includes data from student evaluations of courses. The summary statistics are n=88, x= 3.69, s=0.53. Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.75. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: +3.75 H...
The article “How to Block Nuisance Calls” reported that in a survey of mobile phone users,...
The article “How to Block Nuisance Calls” reported that in a survey of mobile phone users, 70% of those surveyed said that they received at least one nuisance all to their mobile phone in the last month. Suppose that this estimate was based on a representative sample of 600 mobile phone users. Using a significance level of 0.05, determine if there is evidence that more than 66% of all mobile phone users have received at least one nuisance call in...
The average student loan debt is reported to be $25,235. A student belives that the student loan debt is higher in her area. She takes a random sample of 100 college students in her area and determines the mean to be $27,524 and the standard devition to be $6000. Is there sufficient evidence to support the student' claim at a 5% significance level? a) Determine the null and alternative hypotheses. Ho: d = Ho: Select an answer (Put in the...
At least 0.49 of car crashes occur within 2 miles of the
motorists home.
a) Express the null and alternative hypotheses in symbolic form for
this claim.
Ho: p=
Ha:
Use the following codes to enter the following symbols:
≥≥ enter >=
≤≤ enter <=
≠≠ enter !=
b) You decide to survey 100 adult Americans and find that 10 of car
crashes occur within 2 miles of the motorists home. Find the test
statistic. Round to two decimal places....
In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed since then. A survey of 110 college students reported that 91 of them work. Is there evidence to support the reasearcher's claim at the 1% significance level? A normal probability plot indicates that the population is normally distributed. a) Determine the null and alternative hypotheses. Ho: p = H:P Select an answer (Put in the correct symbol and value) b)...
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: O Hopp...
Suppose a university advertises that its average dlass size is 33 or less. A student onganization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 ciasses was selected, and the average class size was found to be 36.2 students. Assume that the standard deviation for class size at the college is 8 students. Using a 0.05, complete parts a and b below a. Does the student...
A data set includes data from student evaluations of courses. The summary statistics are n=88, x= 3.69, s=0.53. Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.75. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: +3.75 H...
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