A survey was conducted at two colleges. 500 students at College A participated in the study....

A survey was conducted at two colleges. 500 students at College A participated in the study. The results indicated that on average, the students spent 15 hours per week doing online assignments and its standard deviation was 5 hours. At College B, 400 students participated in the study. The average hours they worked for online assignments was 20 with a standard deviation of 4 hours. Please test whether there is a true difference in the time students spent for online assignments between the two colleges (using a confidence level of 99%).

Solutions

Expert Solution

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you satisfied with my answer then please please like this.
Thank You

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A nationwide survey of college students was conducted and found that students spend two hours per...

A nationwide survey of college students was conducted and found that students spend two hours per class hour studying. A professor at your university wants to determine whether the time students spend at your university is significantly different from the two hours. A random sample of 36 statistics students is carried out and the findings indicate an average of 1.75 hours. Assume a populatoin standard deviation of 0.5 hours. Using a level of significance of 0.05: 1. Construct a 95%...

A survey of 13,364 students in a country who enrolled in private career colleges was conducted...

A survey of 13,364 students in a country who enrolled in private career colleges was conducted to understand student participation in the private postsecondary educational system. In one part of the survey, students were asked about their field of study and about when they entered college. Here are the results. Field of Study Number of Students Time of Entry Right After High School Later Trades 942 34% 66% Design 584 47% 53% Health 5085 40% 60% Media/IT 3148 31% 69%...

A survey was conducted two years ago asking college students their top motivations for using a...

A survey was conducted two years ago asking college students their top motivations for using a credit card. To determine whether this distribution haschanged, you randomly select 425 college students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a change in the claimed or expected distribution? Use alpha equals 0.10 .α=0.10. Complete parts (a) through (d). Response Old Survey% New Survey Frequency, f Rewards 2929% 112112 Low...

A survey was conducted two years ago asking college students their top motivations for using a...

A survey was conducted two years ago asking college students their top motivations for using a credit card. The percentages are shown in the table to the right. Also shown in the table is the observed frequency for these motivations from a current random sample of college students who use a credit card. Complete parts a through c below. Response Old Survey % New Survey Frequency, f Rewards 28% 110 Low rates 23% 98 Cash back 21% 108 Discounts...

In a sample of 4500 first year college students, a national survey reported that 39% participated...

In a sample of 4500 first year college students, a national survey reported that 39% participated in community service or volunteering work. a)v Find the margin of error for99% confidence level. Explain the findings of the study to someone who does not know statistics. b) Suppose a similar study collects a new sample of 4,500 first year students. If a 99% confidence interval is computed from the new sample, will the confidence interval will be exactly the same as the...

A survey was conducted at a college to determine the number of hours students spent outside...

A survey was conducted at a college to determine the number of hours students spent outside on weekends during the winter. For students from cold weather climates, the results were M = 8, SD = 1.5. For students from warm-weather climates, the results were M = 5, SD = 4.2. Explain what these numbers mean to a person who has never had a course in statistics, and suggest conclusions the person can draw from these results. These conclusions use the...

A survey of 36 randomly selected students who dropped a course was conducted at a college....

A survey of 36 randomly selected students who dropped a course was conducted at a college. The following results were collected. Complete parts (a) through (c). a) Construct a contingency table for the two variables. CourseCourse PersonalPersonal WorkWork Male FemaleFemale (b) Test whether gender is independent of drop reason at the alphaαequals=0.1 level of significance. What are the hypotheses? A. Upper H 0H0: pSubscript Upper CCequals=pSubscript Upper PPequals=pSubscript Upper WW Upper H 1H1: At least one of the proportions is...

Use the following for the next 4 questions: A nationwide survey of college students was conducted...

Use the following for the next 4 questions: A nationwide survey of college students was conducted and found that students spend two hours per class hour studying. A professor at your school wants to determine whether the time students spend at your school is significantly different from the two hours. A random sample of fifteen statistics students is carried out and the findings indicate an average of 2.1 hours with a standard deviation of 0.24 hours. Using the 0.10 level...

1. A company conducted a marketing survey of college students and found that 225 own a...

1. A company conducted a marketing survey of college students and found that 225 own a bicycle and 77 owned a car. If 23 of those surveyed own both a car and a bicycle, how many interviewed have a car or a bicycle? 2. A standard deck of cards consists of four suits (clubs, diamonds, hearts, and spades), with each suit containing 13 cards (ace, two through ten, jack, queen, and king) for a total of 52 cards in all....

A study was conducted for the effects of marijuana use on college students. Memory recall was...

A study was conducted for the effects of marijuana use on college students. Memory recall was evaluated by asking students to sort items. Light Marijuana Users Heavy Marijuana Users n = 64 students x = 53.3 items correctly sorted s = 3.6 items correctly sorted n = 65 students x = 51.3 items correctly sorted s = 4.5 items correctly sorted At the 5% LOS, do the data suggest test that light users correctly sort more items than heavy users?

Subjects