Question
In: Statistics and Probability
Listed are the number of hours a game designer spent coding different games: 17, 21, 31,...
Listed are the number of hours a game designer spent coding different games: 17, 21, 31, 25, 18, 28, 30, 14, 34, 11, 19, 23, 26, 21, 20, 15, and 13. Use the data to complete the frequency distribution table for frequency.
|
Classes |
Frequency |
|
10 – 14 |
(a) |
|
15 – 19 |
(b) |
|
20 – 24 |
(c) |
|
25 – 29 |
(d) |
|
30 – 34 |
(e) |
Solutions
Expert Solution
| Classes | Frequency |
|---|---|
| 10-14 | 3 |
| 15-19 | 4 |
| 20-24 | 4 |
| 25-29 | 3 |
| 30-34 | 3 |
orchestra answered 2 years agoRelated Solutions
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 data below was obtained in a study of number of hours spent by a salesman...
The data below was obtained in a study of number of hours spent
by a salesman in a day (x) versus the number of cars sold (y) by
the salesman.
x
y
1
1
2
1
3
2
4
3
5
5
a) The correlation coefficient r between X and Y is close to
b)The estimated coefficients of regression line (y =
?0 + ?1x) are:
c)If the number of hours spent is 3, what is the predicted
sales
d)Consider...
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...
A study conducted by the MLC on campus found the number of hours spent at the...
A study conducted by the MLC on campus found the number of hours
spent at the MLC during a week. The distribution of times spent at
the MLC is normally distributed with an average of 75 minutes and a
standard deviation of 18 minutes.
(a) If a single student that uses the MLC is selected at random,
what is the probability that this student spent between 80 and 100
minutes at the MLC that week?
(b) Now if a sample...
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;...
A study was conducted to determine if the number of hours spent studying for an exam...
A study was conducted to determine if the number of hours spent
studying for an exam is associated with the exam score. The
following are the observations obtained from a random sample of 5
students:
Number of Hours Spent Studying (X)
8
2
6
4
2
Exam Score (Y)
98
74
87
82
72
The average number of hours spent studying for an exam is
_____.
Part A:
A)
82.6
B)
22
C)
4.4
D)
413
The average exam score...
The number of hours spent studying by students on a large campus in the week before...
The number of hours spent studying by students on a large campus
in the week before the final exams follows a normal distribution
with standard deviation of 8.4 hours. A random sample of these
students is taken to estimate the population mean number of hours
studying.
a. How large a sample is needed to ensure that the probability
that the sample mean differs from the population mean by more than
2.0 hours is less than 0.05?
b. Without doing 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...
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