Homework Answers
a)for first time college students the proportion =odds/(odds+1) =2.63/(2.63+1)=0.725
b) for transfer students ,odds in favor =p/(1-p) =2 to 1
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(15 points) Of first-time college students who matriculate to a certain university, the odds in favor...
Of first-time college students who matriculate to a certain university, the odds in favor of having...
Of first-time college students who matriculate to a certain university, the odds in favor of having graduated in the top 25 percent of their high school class are 2.65 to 1. Of transfer students who matriculate to the same university, 0.5 proportion graduated in the top 25 percent of their high school class. (a) For first-time college students, the proportion who graduated in the top 25 percent of their high school class is _____ (rounded to three decimal places) (b)...
Jump to Problem: [ 1 2 3 4 5 6] Problem 1. (20 points) At a...
Jump to Problem: [ 1 2 3 4 5 6] Problem 1. (20 points) At a certain high school, for seniors, the odds in favor of planning to attend college are 3.4 to 1. Of juniors at the same high school, 0.75 proportion plan to attend college. (n) For seniors, the proportion who plan to attend college in (rounded to three decimal placea) 772 (b) For juniors, the odds in favor of planning to attend college are 3 to 1...
A department of education reported that in 2007, 66% of students enrolled in college or a...
A department of education reported that in 2007, 66% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 236 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 95% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 68% of students enrolled in college or a...
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 106 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 68% of students enrolled in college or a...
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 110 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 99% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 63% of students enrolled in college or a...
A department of education reported that in 2007, 63% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 204 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
Question 5 (1 point) For students who graduated from high school in 2013, the ACT math...
Question 5 (1 point) For students who graduated from high school in 2013, the ACT math scores are approximately normally distributed with mean 20.9 points and standard deviation 5.3 points. What is the z-score of 17 points? Round by cutting off the result up to two decimal places. What proportion of students who took the ACT scored at least 17 points? Give your result as a decimal rounded up to four decimal places. 36
answer B A department of education reported that in 2007, 66% of students enrolled in college...
answer B
A department of education reported that in 2007, 66% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 236 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 95% confidence interval to estimate the actual proportion of...
15% of all college students volunteer their time. Is the percentage of college students who are...
15% of all college students volunteer their time. Is the percentage of college students who are volunteers larger for students receiving financial aid? Of the 383 randomly selected students who receive financial aid, 73 of them volunteered their time. What can be concluded at the a=0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ? (please enter a decimal) H: ?v ? (Please enter a...
Suppose two researchers want to estimate the proportion of American college students who favor abolishing the...
Suppose two researchers want to estimate the proportion of American college students who favor abolishing the penny. They both want to have about the same margin of error to estimate this proportion. However, Researcher 1 wants to estimate with 99% confidence and Researcher 2 wants to estimate with 95% confidence. Which researcher would need more students for her study in order to obtain the desired margin of error? Researcher 1 Researcher 2 Both researchers would need the same number of...
Jump to Problem: [ 1 2 3 4 5 6] Problem 1. (20 points) At a certain high school, for seniors, the odds in favor of planning to attend college are 3.4 to 1. Of juniors at the same high school, 0.75 proportion plan to attend college. (n) For seniors, the proportion who plan to attend college in (rounded to three decimal placea) 772 (b) For juniors, the odds in favor of planning to attend college are 3 to 1...
A department of education reported that in 2007, 66% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 236 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 95% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 106 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 110 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 99% confidence interval to estimate the actual proportion of students enrolled...
Question 5 (1 point) For students who graduated from high school in 2013, the ACT math scores are approximately normally distributed with mean 20.9 points and standard deviation 5.3 points. What is the z-score of 17 points? Round by cutting off the result up to two decimal places. What proportion of students who took the ACT scored at least 17 points? Give your result as a decimal rounded up to four decimal places. 36
answer B
A department of education reported that in 2007, 66% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 236 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 95% confidence interval to estimate the actual proportion of...
15% of all college students volunteer their time. Is the percentage of college students who are volunteers larger for students receiving financial aid? Of the 383 randomly selected students who receive financial aid, 73 of them volunteered their time. What can be concluded at the a=0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ? (please enter a decimal) H: ?v ? (Please enter a...
Suppose two researchers want to estimate the proportion of American college students who favor abolishing the penny. They both want to have about the same margin of error to estimate this proportion. However, Researcher 1 wants to estimate with 99% confidence and Researcher 2 wants to estimate with 95% confidence. Which researcher would need more students for her study in order to obtain the desired margin of error? Researcher 1 Researcher 2 Both researchers would need the same number of...
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