Question

descriptive statistics

for the given data

4 8 18 20 21 22 23 24 25 26 27 28 29 30 31 31 32 32 33 33 34 35 36
37 38 39 47 53

Answer #1

Dataset:
Husband Wife
53 50
38 34
46 44
30 36
31 23
26 31
29 25
48 51
65 46
29 26
28 23
29 32
25 22
22 21
21 24
43 50
24 27
38 33
33 26
35 29
40 29
27 25
27 24
49 38
48 39
27 27
26 24
40 34
35 37
21 26
32 39
30 28
60 52
36 40
25 23
66 55
52 34
41 40
43 ...

BMI Before
BMI After
29
24
25
26
24
23
35
27
22
25
28
27
26
24
27
25
26
24
23
22
21
23
21
25
24
23
25
25
24
26
32
30
26
22
30
28
25
27
25
30
You need to create two histograms: one for the pre-BMI intervention
and another for the post-BMI intervention.
Please
provide your interpretation of the results. For example, you might
want to compare
the two
histograms and point...

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
during the week. Previous surveys have revealed that the population
standard deviation is 10.95 hours. The sample data can be found in
the Excel test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
Develop a 95% confidence interval for the population mean
If the editors of Wiredwanted to have the...

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...

____________________________________________
The results of a sample of 372 subscribers to Wired
magazine shows the time spent using the Internet during the week.
Previous surveys have revealed that the population standard
deviation is 10.95 hours. The sample data can be found in the Excel
test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
____________________________________________
Develop a 95% confidence interval for the population mean
____________________________________________
If the editors...

We want to compare the
average gas mileage of American-made cars vs. Japanese-made
cars.
The claim is that the Japanese cars and American cars do not get
the same gas mileage.
Use the list data below to test the hypothesis that the Japanese
cars and American cars do not get the same gas mileage.
The American cars are in list1 and the Japanese cars in list2
below
We do not know whether the mileages are normally distributed or
not, but...

Driving under the influence of alcohol (DUI) is a serious
offense. The following data give the ages of random sample of 50
Drivers arrested while driving under the influence of alcohol.
Using the listed ages; find 16 18 20 21 21 22 22 22 23 24 24 25 26
26 26 27 27 27 29 30 30 31 31 32 33 34 34 35 35 36 37 38 39 40 40
41 43 45 46 47 47 49 49 51...

Use the following data to test if there is a difference in mean
age between mothers of a boy and mothers of a girl at alpha =0.05.
provide p-value
MomAge
gestation
sex
weight
preemie
35
39
F
3175
FALSE
22
42
F
3884
FALSE
35
39
F
3030
FALSE
23
40
F
3629
FALSE
23
42
F
3481
FALSE
25
38
F
2693
FALSE
25
40
F
3345
FALSE
24
40
F
3232
FALSE
19
40
F
2795
FALSE
20...

B. Determine whether or not the table is a valid probability
distribution of a discrete random variable. Explain fully.
X
0.23
0.14
0.17
P(X=x)
-0.22
0.38
0.84
Daily sales of a medium sized restaurant are normally
distributed with a mean of $720 and a standard deviation of
$80.
What is the probability that a randomly selected day will make
a sales of at least $656?
What is the probability that a randomly selected day will make
a sales between $680...

to look at 36 weeks instead of 20 weeks. His quality improvement
team provided him with the data below after an “intervention” was
introduced in week 20. Calculate the upper and lower control limits
and then construct a control chart. Display your chart.
Question: Using the rules for detecting special
causes, can you detect any special causes in this case? If so, what
special causes can you detect? What does this mean? Was the
intervention successful in reducing the delays?...

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