20. A student is interested in studying the impact of the number of books students referred...

20. A student is interested in studying the impact of the number of books students referred to in a statistics course and the number of lectures they attended on the final grade on the course. A sample of 25 students is selected and the data are given below.

BOOKS	ATTEND	GRADE
2	17	60
3	18	54
1	17	62
5	20	59
2	12	44
1	13	40
3	17	96
4	19	90
5	22	97
2	22	54
5	22	91
1	12	48
3	18	91
1	12	65
4	21	82
5	14	61
3	18	54
3	13	46
1	8	64
5	22	90

Use the F test to determine the overall significance of the relationship. What is your conclusion at the 0.05 level of significance? Use the t test to determine the significance of each independent variable? What are your conclusions at the 0.05 level of significance?

Solutions

Expert Solution

SOLUTION :

Given That,

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A student is interested in the sleep quality of students. That student selects a random sample...

A student is interested in the sleep quality of students. That student selects a random sample of 21 students (age 19-24 years) from each four undergraduate years (Freshman, Sophomore, Junior and Senior), and applies Pittsburgh Sleep Quality Index (PSQI) and obtains their responses. PSQI includes 19 self-reported items and is designed to evaluate overall sleep quality (Data are presented in Table 1 below). The student is interested in determining whether there is any evidence of a difference in sleep quality...

You are interested in studying the effect of laptops in class on students’ performance. At the...

You are interested in studying the effect of laptops in class on students’ performance. At the beginning of the quarter, you randomly assign your 250 students to sit on either the left half or the right half of the lecture hall. Students on the left half are told to bring laptops to class and to take notes on their laptops. Students who sit on the right side of the room are required to write notes on paper. At the end...

a) A bank is interested in studying the number of people who use the ATM. On...

a) A bank is interested in studying the number of people who use the ATM. On average, 2 customers walk up to the ATM during any 10 minute. Find the probability in each case. i) Atleast 5 customer in 20 minutes. ii) Fewer than 6 but more than 2 customer in 10 minutes. b) Anderson Research is a full-service marketing research consulting firm. Recently it was retained to do a project for a major U.S. airline. The airline was considering...

A graduate student in the School of Education is interested in whether families of students in...

A graduate student in the School of Education is interested in whether families of students in the Chicago Public Schools are for or against the new legislation proposing school uniform requirements. She surveys 600 students and finds that 480 are against the new legislation. Compute a 90 and 98 percent confidence interval for the true proportion who are for the new legislation.

The number of hours 10 students spent studying for a test and their scores on that...

The number of hours 10 students spent studying for a test and their scores on that test is represented in the table below. Hours spent studying, x 0 2 4 5 5 5 6 7 8 9 Test scores, y 40 51 64 69 73 75 93 90 95 95 7) What amount of the variance in test score (y) do the hours spent studying (x) account for this sample? (r2 =?) Interpret the result in the context of the...

The number of hours 1010 students spent studying for a test and their scores on that...

The number of hours 1010 students spent studying for a test and their scores on that test are shown in the table. Is there enough evidence to conclude that there is a significant linear correlation between the data? Use alphaαequals=0.050.05. Hours, x 00 11 22 44 44 55 55 66 77 88 Test score, y 4141 4040 5555 5656 6464 6666 7575 7878 8181 9797 LOADING... Click here to view a table of critical values for Student's t-distribution. Setup...

The number of hours 10 students spent studying for a test and their scores on that...

The number of hours 10 students spent studying for a test and their scores on that test are shown in the table. Is there enough evidence to conclude that there is a significant linear correlation between the data? Use alphaequals0.05. Hours, x= 0 1 2 4 4 5 5 6 7 8 Test score, y= 41 40 51 56 65 70 76 70 84 97 1. Setup the hypothesis for the test. 2. Identify the critical value(s). Select the correct...

The number of hours 10 students spent studying for a test and their scores on that...

The number of hours 10 students spent studying for a test and their scores on that test is represented in the table below. Hours spent studying, x 0 2 4 5 5 5 6 7 8 9 Test scores, y 40 51 64 69 73 75 93 90 95 95 3) Describe the type of correlation and interpret the correlation in the context of the data. Be specific in describing the magnitude, direction, and strength of the relationship. (12p) 4)...

The number of hours 10 students spent studying for a test and their scores on that...

The number of hours 10 students spent studying for a test and their scores on that test are shown in the table. Is there enough evidence to conclude that there is a significant linear correlation between the data? Use alphaαequals= .01 X(hours) = top row; Y(score)=bottom row 0 1 2 3 4 4 5 6 7 8 41 46 52 50 65 68 75 85 82 91 Set up hypothesis test = ?? Critical Values = ?? Calculate test statistic;...

You are interested in the time students usually spend studying for the final exams. Assume that...

You are interested in the time students usually spend studying for the final exams. Assume that the total study time during the final week in the semester among students is approximately Normally distributed with mean= 12 hours and a standard deviation = 4.4 hours . You initially plan to take a simple random sample of size n=50 and compute the average total study time. What standard deviation of x do you need such that the margin of error for the...

Subjects