Question
In: Statistics and Probability
A paper reported that in a representative sample of 291 American teens age 16 to 17,...
A paper reported that in a representative sample of 291 American teens age 16 to 17, there were 79 who indicated that they had sent a text message while driving. For purposes of this exercise, assume that this sample is a random sample of 16- to 17-year-old Americans. Do these data provide convincing evidence that more than a quarter of Americans age 16 to 17 have sent a text message while driving? Test the appropriate hypotheses using a significance level of 0.01.
z=
p-value=
Solutions
orchestra answered 2 years agoRelated Solutions
Use the following data to create the contingency tables. AGE Male 16 17 17
Use the following data to create the contingency tables.
AGE
Male
16
17
17
19
19
19
18
17
18
17
16
19
19
19
17
16
17
16
19
19
24
31
23
44
21
42
23
43
43
33
30
41
35
40
24
43
22
30
25 32
43
51
55
80
61
58
65
52
67
75
90
63
71 74
Female
17
16
17
19
19
18
17
19
16
18
19 ...
Use the following data to create the contingency tables. AGE Male 16 17 17
Use the following data to create the contingency tables.
AGE
Male
16
17
17
19
19
19
18
17
18
17
16
19
19
19
17
16
17
16
19
19
24
31
23
44
21
42
23
43
43
33
30
41
35
40
24
43
22
30
25 32
43
51
55
80
61
58
65
52
67
75
90
63
71 74
Female
17
16
17
19
19
18
17
19
16
18
19 ...
Over half of all American teens (ages 12 to 17 years) have an online profile, mainly...
Over half of all American teens (ages 12 to 17 years) have an
online profile, mainly on Facebook. A random sample of 517 teens
with profiles found that 399 included photos of themselves.
(a) Give the 99% large-sample confidence interval for the
proportion p of all teens with profiles who include photos
of themselves.
Large-sample Interval: to
(b) Give the plus four 99% confidence interval for p .
(The plus-four interval always pulls the results away from 0% or
100%,...
Over half of all American teens (ages 12 to 17 years) have an online profile, mainly...
Over half of all American teens (ages 12 to 17 years) have an
online profile, mainly on Facebook. A random sample of 471 teens
with profiles found that 301 included photos of themselves. (a)
Give the 90% large-sample confidence interval for the proportion p
of all teens with profiles who include photos of themselves.
Large-sample Interval:
(b) Give the plus four 90% confidence interval for p . (The
plus-four interval always pulls the results away from 0% or 100%,
whichever...
Over half of all American teens (ages 12 to 17 years) have an online profile, mainly...
Over half of all American teens (ages 12 to 17 years) have an
online profile, mainly on Facebook. A random sample of 463 teens
with profiles found that 333 included photos of themselves. (a)
Give the 99.8% large-sample confidence interval for the proportion
p of all teens with profiles who include photos of themselves.
Large-sample Interval: to (b) Give the plus four 99.8% confidence
interval for p . (The plus-four interval always pulls the results
away from 0% or 100%,...
In a representative sample of 50 American households, 32 households had a pet. Use this sample...
In a representative sample of 50 American households, 32
households had a pet. Use this sample data to answer the following
questions.
A. Use Minitab Express to
construct a 95% confidence interval to estimate the proportion of
all American households with a pet. Show how you checked
assumptions. If assumptions were met, use the normal approximation
method. Remember to include all relevant Minitab Express output and
to clearly identify your answer. Other than checking assumptions,
do not do any hand...
In a representative sample of 50 American households, 32 households had a pet. Use this sample...
In a representative sample of 50 American households, 32
households had a pet. Use this sample data to answer the following
questions. A. Use Minitab Express to construct a 95% confidence
interval to estimate the proportion of all American households with
a pet. Show how you checked assumptions. If assumptions were met,
use the normal approximation method. Remember to include all
relevant Minitab Express output and to clearly identify your
answer. Other than checking assumptions, do not do any hand...
In a study of academic procrastination, the authors of a paper reported that for a sample...
In a study of academic procrastination, the authors of a paper
reported that for a sample of 431 undergraduate students at a
midsize public university preparing for a final exam in an
introductory psychology course, the mean time spent studying for
the exam was 7.24 hours and the standard deviation of study times
was 3.50 hours. For purposes of this exercise, assume that it is
reasonable to regard this sample as representative of students
taking introductory psychology at this university....
In a study of academic procrastination, the authors of a paper reported that for a sample...
In a study of academic procrastination, the authors of a paper
reported that for a sample of 411 undergraduate students at a
midsize public university preparing for a final exam in an
introductory psychology course, the mean time spent studying for
the exam was 7.64 hours and the standard deviation of study times
was 3.60 hours. For purposes of this exercise, assume that it is
reasonable to regard this sample as representative of students
taking introductory psychology at this university....
In a study of academic procrastination, the authors of a paper reported that for a sample...
In a study of academic procrastination, the authors of a paper
reported that for a sample of 481 undergraduate students at a
midsize public university preparing for a final exam in an
introductory psychology course, the mean time spent studying for
the exam was 7.54 hours and the standard deviation of study times
was 3.80 hours. For purposes of this exercise, assume that it is
reasonable to regard this sample as representative of students
taking introductory psychology at this university....
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- C++: Write a program that produces truth tables for the following compound propositions. Write the header...
- 1. What is the historical role of investment bankers ? Has this role changed ? Why...
- How were the original Internet requirements met through its design? What are the two main requirements...
- discuss crowdfunding on platforms: What features of the services incorporate virality? What are some of the...
- A textbook of mass 2.08 kg rests on a frictionless, horizontal surface. A cord attached to...
- Describe a time when someone did not really listen to or understand a point you were...
- Enumerations Create an advanced enumeration to represent months (JANUARY – DECEMBER) called enuMonths Add internal properties...
ADVERTISEMENT