Question

The following data are believed to have come from a normal distribution. Use the goodness of fit test and = .05 to test this claim. Use Table 12.4.

18 | 23 | 21 | 24 | 18 | 22 | 18 | 22 | 19 | 13 | 10 | 20 | 17 | 20 | 20 |

20 | 17 | 14 | 24 | 23 | 22 | 43 | 28 | 27 | 26 | 29 | 28 | 33 | 22 | 28 |

Using six classes, calculate the value of the test statistic (to 2 decimals).______

The p value is ? _________

Conclusion? Cannot reject assumption that the data comes from a normal distribution. - or -The data does not come from normal distribution.

Answer #1

Consider the following data:
25
24
18
20
21
18
16
20
23
17
15
13
19
23
24
20
16
26
21
24
15
22
16
12
20
23
19
26
20
25
21
19
21
25
23
26
21
19
20
14
(a)
Develop a frequency distribution
using classes of 12-14, 15-17, 18-20, 21-23, and 24-26.
Class
Frequency
12-14
15-17
18-20
21-23
24-26
Total
(b)
Develop a relative frequency
distribution and a percent frequency distribution using the classes...

6. Using the class data (see Blackboard file - "Class Survey
Data - PSS-10 and GAS") calculate the correlation between the GAS –
Goal disengagement and the GAS – Goal reengagement scores. Write
the results in a statistical statement.
7. Using the class data calculate the correlation between the
GAS – Goal disengagement and the PSS-10 scores. Write the results
in a statistical statement.
8. Using the class data calculate the correlation between the
GAS – Goal reengagement scores and...

Construct a frequency distribution of the following data using
classes 0-9, 10-19,…so on
Data: 8, 15, 18, 22, 24, 25, 26, 33, 35, 42. The constructed
frequency distribution is:
Positively Skewed
None
Negatively Skewed
Symmetric

1.
The test statistic for goodness of fit has a chi-square
distribution with k - 1 degrees of freedom provided that
the expected frequencies for all categories are
a.
k or more.
b.
10 or more.
c.
5 or more.
d.
2k.
2. The owner of a car wash wants to see if the arrival rate of
cars follows a Poisson distribution. In order to test the
assumption of a Poisson distribution, a random sample of 150
ten-minute intervals was...

Create a frequency distribution for the given data starting at
15 with a class width of 4 and then answer the following
questions:
ACT Scores
18 23 24 31 19
27 26 22 32 18
35 27 29 24 20
18 17 21 25 26
a. Number of classes is BLANK-1.
b. Lower class limit of the 3rd class is
BLANK-2 and the upper class limit of the 3rd class
is BLANK-3.
c. The mid point of the 4th class...

For the data below -
Write H0 (1 point)
Write H1 (1 point)
Compute and report the results for the t statistic
(using Excel) (hint also compute descriptive statistics to help
with d6); use (α = .05) – two tailed - 2 sample assuming =
variances) (2 points)
Retain or reject H0 (1 point)
flashcards
no flashcards
32
16
30
22
29
24
35
20
29
25
38
31
30
23
39
19
27
20
33
21
36
18
30...

Calculate d and sd for the paired
data given below. Assume the two samples are dependent samples of
paired data, and assume the population distribution of the paired
differences are approximately normal. Don’t round. (1 point)
Group A
18
23
24
19
17
22
18
16
20
Group B
24
23
23
19
20
21
23
19
23

Q1.
Please download the dataset “Social W orkers” from Canvas and
use Minitab for all the analysis. The dataset contains salary and
years of experience for 50 social workers. The consulting group
working on these data is interested in evaluating how salary ($)
changes as a person builds up years of experience (x) in the job.
Let’s investigate this question using some of the concepts of
linear regression discussed in class this far.
a)Fit a linear regression model to these...

For the following data set, put the data into a frequency
distribution table, starting at 10 with a row width of 5. Then put
the data from the frequency distribution table into a histogram.
Label the axis with midpoint markers.
12, 16, 32, 24, 18, 30, 19, 26, 25, 35, 17, 20, 23, 23, 30

Coffeeville Regional Health Alliance collects and shares
performance data among its participating hospitals. The table to
the right displays a frequency distribution for one such measure,
charges (in $1,000s), for a common surgical procedure. Conduct a
goodness-of-fit test to determine if the data if from a normal
population. Use a significance level of 0.05. What do you
Conclude?
Charges($1,000s)
Frequency
5 up to 6
18
6 up to 7
24
7 up to 8
28
8 up to 9
20...

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