Question

(1 point) In January, 2011, The Marist Poll published a report
stating that 66% of adults nationally think licensed drivers should
be required to retake their road test once they reach 65 years of
age. It was also reported that interviews were conducted on 1,1018
American adults, and that the margin of error was 3% using a 95%
confidence level. Based on this information, choose the correct
statements below.

(a) Verify the margin of error reported by The Marist Poll by
identifying the correct formula to use.

(b) Based on a 95%95% confidence interval, does the poll provide
convincing evidence that more than 70%70% of the population think
that licensed drivers should be required to retake their road test
once they turn 65?

NOTE: your responses will not be shown after submission, because
these are True/False problems, and we don't want you guessing.

**a) Choose the correct statement:**

**Use ?̂p^ in the formula:**.
??=?∗?̂(1−?̂)?‾‾‾‾‾‾√ME=z∗p^(1−p^)n

**Use ?p in the formula:**.
??=?∗?(1−?)?‾‾‾‾‾‾√ME=z∗p(1−p)n

**b) Choose the correct statement:**

**Yes**. Yes, it does provide convincing evidence
because it is only 95%95% confident

**No**. No, it does not provide convincing evidence
because the margin of error is too small for 70%70% to fit

Answer #1

Elderly drivers. A polling agency interviews
866 American adults and finds that 546 think licensed drivers
should be required to retake their road test once they reach 65
years of age. Round all answers to 4 decimal places.
1. Calculate the point estimate for the proportion of American
adults that think licensed drivers should be required to retake
their road test once they reach 65 years of age.
2. Calculate the standard error for the point estimate you
calculated in...

Question 23:
Internet tax: In
2013
, the Gallup Poll asked
1019
U.S
. adults whether they believed that people should pay sales tax
on items purchased over the internet. Of these,
428
said they supported such a tax. Does the survey provide
convincing evidence that more than
39%
of U.S. adults favor an internet sales tax? Use the
=α0.05
level of significance and the
P
-value method with the TI-84 Plus calculator.
Part: 0 / 4
0 of 4...

In a recent poll of 100 randomly selected adults in the United
States, 82 had obtained a high school diploma. Complete the steps
below:
a) What is the sample proportion?
b) How are the conditions of the Central Limit Theorem met for
this scenario?
c) What is the margin of error for a 95% confidence interval?
Round to 3 places. The margin of error formula is
1.96p^(1−p^)n.
d) What is the 95% confidence interval? Round to 3
places.
e) Would...

In a recent poll 1040randomly selected adults were asked whether
they approve of labor unions;66% said yes. In 1936, about 69% of
adults approved of labor unions. Perform a significance testto
determine if the data provide sufficient evidence to conclude that
the percentage of adults who approve of labor unions has decreased
since 1936? a) State Ho, Ha, and whether the test is two-tailed,
left-tailed, or right-tailed.b) Calculate the test statistic.(Round
your answer to the hundredths place.)c) Calculate the
p-value.(Round...

A poll of 2,061 randomly selected adults showed that 97% of them
own cell phones. The technology display below results from a test
of the claim that 94% of adults own cell phones. Use the normal
distribution as an approximation to the binomial distribution, and
assume a 0.01 significance level to complete parts (a) through (e).
Show your work. ***Correct answers are in BOLD (how do we
get those answers)
Test of p=0.94 vs p≠0.94
X= 1989, N= 2061, Sample...

1. A poll of 2234 U.S. adults found that 31% regularly used
Facebook as a news source.
Find the margin of error and confidence interval for the
percentage of U.S. adults who regularly use Facebook as a news
source, at the 90% level of confidence. Round
all answers to 2 decimal places.
Margin of Error (as a percentage):
Confidence Interval: % to %
Find the margin of error and confidence interval for the
percentage of U.S. adults who regularly use...

(1 point) Fireworks. Last summer, Survey USA
published results of a survey stating that 307 of 530 randomly
sampled Kansas residents planned to set off fireworks on July 4th.
Round all results to 4 decimal places.
1. Calculate the point estimate for the proportion of Kansas
residents that planned to set off fireworks on July 4th
2. Calculate the standard error for the point estimate you
calculated in part 1.
3. Calculate the margin of error for a 99 %...

A poll of 2,133 randomly selected adults showed that 94% of
them own cell phones. The technology display below results from a
test of the claim that 92% of adults own cell phones. Use the
normal distribution as an approximation to the binomial
distribution, and assume a 0.01
significance level to complete parts (a) through (e).
Test
of
pequals
0.92vs
pnot equals
0.92
Sample
X
N
Sample p
95% CI
Z-Value
P-Value
1
1996
2 comma 133
0.935771
(0.922098,0.949444
)...

A poll of
2 comma 1172,117
randomly selected adults showed that
9191%
of them own cell phones. The technology display below results
from a test of the claim that
9393%
of adults own cell phones. Use the normal distribution as an
approximation to the binomial distribution, and assume a
0.010.01
significance level to complete parts (a) through (e).
Test of
pequals=0.930.93
vs
pnot equals≠0.930.93
Sample
X
N
Sample p
95% CI
Z-Value
P-Value
1
19241924
2 comma 1172,117
0.9088330.908833
(0.8927190.892719,0.9249480.924948)...

recently conducted Gallup poll surveyed 1,485 randomly selected
US adults and found that 48% of those polled approve of the job the
Supreme Court is doing. The Gallup poll's margin of error for 95%
confidence was given as ±5%. Students at the College of Idaho are
interested in determining if the percentage of Yotes that approve
of the job the Supreme Court is doing is different from 48%. They
take a random sample of 30C of I students.
(a) Will...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 4 minutes ago

asked 4 minutes ago

asked 4 minutes ago

asked 13 minutes ago

asked 19 minutes ago

asked 23 minutes ago

asked 30 minutes ago

asked 35 minutes ago

asked 59 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago