Question
In: Statistics and Probability
Problem: Internet use for US and Indian Students Sample Course work use (hours) Personal use (hours) US students
Problem: Internet use for US and Indian Students Sample Course work use (hours) Personal use (hours) US students Mx=1.76 Mx=2.08 N=149 Sx=1.52 Sx =1.91 Indian Students My=.73 My=.87 N=306 Sy =.79 Sy =.78 Determine whether US students have significantly higher internet use for course work than the Indian students at .01 level of significance.
Solutions
orchestra answered 2 years agoRelated Solutions
a us based internet company offers a basic accounting course. in the first semester 315 students...
a
us based internet company offers a basic accounting course. in the
first semester 315 students registered. they have been sorted into
7 regions with the following enrollments in each.
45
60
30
40
50
55
35
test at a 10% significance and find the following:
-test statistic
-denominator of the formula
A campus researcher asked a random sample of 8 students about how many hours they work...
A campus researcher asked a random sample of 8 students about
how many hours they work per week on average and their grade in
their last math course. She then made a table for hours worked per
week ? and their last math class score ?.
X
11
13
12
22
8
16
12
21
Y
97
76
80
78
87
83
81
77
∑? = 115, ∑? = 659, ∑(??) = 9344, ∑?2 = 1823, ∑?2 =
54,617
a....
The data below refers to the time in hours spent on mobile internet by sample of...
The data below refers to the time in hours spent on mobile
internet by sample of 10 students in a class. 39 42 47 45 32 45 37
34 33 29 Assume that the population data follows a normal
distribution with unknown mean and unknown standard deviation. Find
a 95% confidence interval estimate of μ . [33.813, 42.787] hours
[35.557, 41.936] hours [34.664, 41.936] hours
Suppose in a course, hours spent in a week to do homework by students follow normal...
Suppose in a course, hours spent in a week to do homework by
students follow normal distribution with mean μ and standard
deviation σ.
Let X be the number of hours spent in a week by a
randomly selected student. What is the probability that she spent
more than 0.53 standard deviation hours more than the population
average? i.e. find P(X ≥ μ+ 0.53 σ). [Answer
to 4 decimal places]
Tries 0/5
Suppose we randomly select n students from the...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
7
5
9
5
5
8
6
7
13
6
5
7
3
3
5
5
1
10
12
2
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
7
5
8
7
4
8
8
7
12
5
5
7
4
2
7
6
1
10
11
4
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
5
5
9
6
4
8
7
7
11
6
3
7
2
3
6
5
1
10
11
4
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
6
5
7
5
4
7
8
7
13
5
4
8
4
3
6
4
1
10
11
2
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round...
7.) A researcher measures the relationship between Internet use (hours per week) and social interaction (hours...
7.) A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
7
3
8
5
6
8
8
6
13
5
5
6
2
3
7
6
3
10
12
2
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
(b) Compute the coefficient of determination. (Round...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use
(hours per week) and social interaction (hours per week) in a
sample of 10 students. The following table lists the hypothetical
results of this study.
Internet
Use
Social
Interaction
X
Y
5
4
8
5
5
6
8
6
11
5
4
6
3
3
7
5
2
11
12
3
(a) Compute the Pearson correlation coefficient. (Round your
answer to three decimal places.)
____
(b) Compute the coefficient of determination. (Round...
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