Question
In: Statistics and Probability
The accompanying table lists the number of registered automatic weapons (in thousands) along with the murder...
The accompanying table lists the number of registered automatic weapons (in thousands) along with the murder rate (in murders per 100,000 of population), for randomly selected states. Automatic weapons are guns that continue to fire repeatedly while the trigger is help back.
Automatic Weapons 11.6 8.3 3.6 0.6 6.9 2.5 2.4 2.6
Murder Rate 13.1 10.6 10.1 4.4 11.5 6.6 3.6 5.3
a) Plot the scatter diagram for the paired data.
b) Assuming a 5% level of significance, use the five-step hypothesis testing process and the linear correlation coefficient, r, to determine if there is a linear correlation.
c) Find the equation of the regression line and plot it on your scatter diagram using an x of 1.2 and an x of 10.4.
d) Determine the residual value for an x of 2.4 and explain its meaning.
e) What is the best predicted murder rate for a state with 9,600 registered automatic weapons?
Solutions
orchestra answered 2 years agoRelated Solutions
The table below shows the number of state-registered automatic weapons and the murder rate for several...
The table below shows the number of state-registered automatic
weapons and the murder rate for several Northwestern
states.
xx
11.7
8.6
6.7
3.3
2.4
2.6
2.2
0.6
yy
14.3
11.1
9.8
6.6
6
6.1
5.8
4.7
xx = thousands of automatic weapons
yy = murders per 100,000 residents
Determine the regression equation in y = ax + b form and write it
below. (Round to 2 decimal places)
A) How many murders per 100,000 residents can be expected in...
Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee fatalities from...
Use the accompanying paired data consisting of registered boats
(tens of thousands) and manatee fatalities from boat encounters.
Let x represent the number of registered boats and let y represent
the corresponding number of manatee deaths. Use the given number of
registered boats and the given confidence level to construct a
prediction interval estimate of manatee deaths. Use x equals =83
(for 830,000 registered boats) with a 99% confidence level.
Boats (tens of thousands) Manatees
66 55
67 39
66 ...
Use the accompanying paired data consisting of registered boats? (tens of? thousands) and manatee fatalities from...
Use the accompanying paired data consisting of registered boats?
(tens of? thousands) and manatee fatalities from boat encounters.
Let x represent the number of registered boats and let y represent
the corresponding number of manatee deaths. Use the given number of
registered boats and the given confidence level to construct a
prediction interval estimate of manatee deaths. Use = 87 (for
87?0,000 registered? boats) with a 99?% confidence level.
Find the indicated prediction interval.
__ manatees < y < __...
Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee fatalities from...
Use the accompanying paired data consisting of registered boats
(tens of thousands) and manatee fatalities from boat encounters.
Let x represent the number of registered boats and let y represent
the corresponding number of manatee deaths. Use the given number of
registered boats and the given confidence level to construct a
prediction interval estimate of manatee deaths. Use x=89 (for
890,000 registered boats) with a 99% confidence level.
Boats (tens of thousands) Manatees
67 54
68 37
66...
The accompanying table lists the "attribute" ratings made by a random sample of participants in a...
The accompanying table lists the "attribute" ratings made by a
random sample of participants in a speed dating session. Each
attribute rating is the sum of the ratings of five attributes
(sincerity, intelligence, fun, ambition, shared interests). Use a
0.05 significance level to test the claim that there is a
difference between female attribute ratings and male attribute
ratings.
Rating of Male by Female Rating of Female by
Male
33 27
25 42
32 50
37 35
21 44
24 ...
The accompanying table lists the numbers of words spoken in a day by each member of...
The accompanying table lists the numbers of words spoken in a
day by each member of 56 different randomly selected couples.
Complete parts (a) and (b) below.
Male Female
27,927 20,148
14,850 24,892
6,324 5,396
28,793 19,140
26,459 10,862
6,331 16,212
21,862 10,044
17,046 19,135
26,084 13,129
21,814 20,366
11,281 16,227
10,646 12,021
12,117 17,875
22,161 22,720
20,445 4,559
777 19,113
19,858 22,515
9,697 17,186
21,106 16,356
16,351 12,606
17,379 29,934
21,860 9,533
9,490 15,950
8,727 7,057
25,605 11,467
10,938 ...
The accompanying table lists the numbers of words spoken in a day by each member of...
The accompanying table lists the numbers of words spoken in a
day by each member of 56 different randomly selected couples.
Complete parts (a) and (b) below.
a. Use a 0.05 significance level to test the claim that among
couples, males speak fewer words in a day than
females. What are the null and alternative hypotheses
for the hypothesis test?
Identify the test statistic. (Round to two decimal places as
needed.)
Identify the P-value. (Round to three decimal places as
needed.)...
The accompanying table shows the annual salaries, in thousands of dollars, earned by a sample of...
The accompanying table shows the annual salaries, in thousands
of dollars, earned by a sample of individuals who graduated with
MBAs in the years 2012 and 2013. Perform a hypothesis test using α
equals= 0.05 to determine if the median salary for 2012 MBA
graduates is lower than 2013 MBA graduates.
Salaries (in thousands of dollars) for 2012 MBA graduates
92.6
66.1
60.6
85.5
92.8
44.7
84.4
81.1
44.2
94.3
66.6
61.6
94.6
81.6
Salaries (in thousands of dollars) for...
The table below lists the earnings (in thousands of dollars) of a random sample of 12...
The table below lists the earnings (in thousands of
dollars) of a random sample of 12 male and 12 female salespersons.
At alpha = 0.10 can you conclude that there is a difference between
males’ and females’ earnings?
Male
28
43
64
51
48
44
36
45
67
49
40
65
Female
36
27
51
43
35
48
41
37
34
47
50
43
The claim is “there is a difference between males’ and
females’ earnings”
The accompanying table lists a random selection of usual travel times to school, in minutes, for...
The accompanying table lists a random selection of usual travel
times to school, in minutes, for 40 secondary school students in
country A. A second selection of usual travel times to school, in
minutes, was randomly selected for 40 students in country B.
Complete parts a) and b).
Sample Country A Sample Country B
45 29
5 10
4 9
14 30
50 5
21 8
21 7
19 15
21 10
21 36
24 16
36 10
14 24...
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