Related questions
The data below comes from a university that wanted to see if there was a relationship between High School GPA and College GPA.
For each hypothesis test, provide the claim, critical values, test statistic and conclusion.
1) Using a 95% level of confidence, test the claim High School GPA’s have a
2) Using a 95% level of confidence, test the claim College GPA’s have a mean of 3.0.
3) Using a 95% level of confidence, test the claim that the majority of students have at least a 3.0 GPA in High School.
High School College GPA
GPA
3.88 3.71
3.20 2.98
2.88 2.71
3.95 3.74
4.1 4.0
3.9 3.81
3.4 3.33
2.77 2.64
3.55 3.36
3.45 3.35
3.05 2.97
3.94 3.8
3.65 3.49
4.0 3.95
3.78 3.61
3.56 3.22
3.95 4.0
2.84 2.68
2.79 2.56
3.65 3.44
3.84 3.59
3.35 2.97
3.12 2.75
3.02 2.6
3.33 3.56
Trending nowThis is a popular solution!
Step by stepSolved in 4 steps
- The manager at Bell’s Gym wants to know the proportion of members who use the Cardio Machines. A sample of 260 members showed that 40 of them use cardio machines. Calculate a 97% confidence interval for the proportion of members who use the cardio machines.arrow_forwardIf there was a 95% confidence interval of say, (0.48, 0.68), about a product being preferred by consumers, how could a business use this result in making a marketing statement about their product?arrow_forwardA survey was conducted of visitors to the Jakarta Fair. For this reason, two groups of samples were taken. The first sample was 500 visitors for women and when they were asked 325 people said they were satisfied with the exhibition at the Jakarta Fair, while the second sample consisted of 700 visitors for gentlemen and 300 of them said they were not satisfied with the exhibition at the Jakarta Fair. the Jakarta Fair. Make a 95% confidence interval to estimate how much the difference between the two populations of visitors who are satisfied with the exhibition at the Jakarta Fair?arrow_forward
- A survey conducted by the U.S. department of Labor found the 48 out of 500 heads of households were unemployed. Construct a 90% confidence interval estimate of the proportion of unemployed heads of households in the population.arrow_forwardMs. Rains believes more seniors from PLD plan to attend college than seniors at Lafayette. In a random sample of 35 PLD seniors, 21 responded they plan to attend college. In a random sample of 32 Lafayette seniors only 17 responded they plan to attend college. Using a 95% confidence interval, predict the true difference in the proportion of seniors at PLD and Lafayette who plan to attend college and comment on Ms. Rains' belief.arrow_forwardJane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying 22 students, she finds 5 who eat cauliflower. Obtain and interpret a 95% confidence interval for the proportion of students who eat cauliflower on Jane's campus using Agresti and Coull's method.arrow_forward
- A random survey of 150 CBC students found that 35 of them intended to transfer to WSU Tri-Cities upon completing their AA degree. Construct a 95% confidence interval for the proportion of CBC students intending to transfer to WSU Tri-Cities. Give your answer as a complete sentence in the context of the problem.arrow_forwardConstruct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)arrow_forwardA pollof 2000 randomly selected students in grades 6 through 8 was conducted and found that 48% enjoy playing sports. Is the 48% result a statistic or a parameter?arrow_forward
- A study is conducted by a physical therapist to determine whether there is a difference in the proportion of men and women in the U.S. that participate in regular sustained physical activity. It is found that 22% of menout of 550 and 19.5% of women out of 450 participated in regular sustained physical activity. Construct a 90% confidence interval for the difference in proportions of men and women that participate in regular sustained and state your conclusion.arrow_forwardIn a survey of 500 students, 327 said they were planning to stay in town for the holidays. What is the point estimate for the proportion of students staying home for the holidays? Construct the 95% confidence interval for the proportion of students staying home for the holidays. Assume all requirements have been met.arrow_forwardPlease help with A and Barrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning 
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman