Question

Pickup Trucks In a survey, 510 U.S. adults were asked whether
they drive

a pickup truck and whether they drive a Ford. The results showed
that

three in ten adults surveyed drive a Ford. Of the adults surveyed
that drive

Fords, two in nine drive a pickup truck. Find the probability that
a randomly

selected adult drives a Ford and drives a pickup truck.

Answer #1

Let the event “a randomly selected adult drives a Ford” as
*X*.

It has been given that 3 in 10 adults drives a Ford.

Hence the probability that a randomly selected adult drives a
Ford is *P*(*X*) =

Let the event that ' a randomly selected adult drives a pick-up truck' is Y

the probability that a randomly selected adult drives a pickup truck given that adult drives a Ford is

The probability that a randomly selected adult drives a Ford and drives a pickup truck.

In a random sample, people were asked if they drove cars or
trucks/suv. In the survey, 751 people responded that they drove
a car and
1304 people said they drove a truck/suv. What is the probability
of a
randomly selecting a person who drives a car?

Gallup poll consisted of 1012 randomly selected adults who were
asked whether or not cloning of humans should be allowed. 901 of
the adults surveyed said that cloning should not be allowed.
Construct a 98% confidence interval to estimate the true percentage
of all adults who hold this belief. 1. State the Parameter 2. Find
the point estimate 3. Check assumptions 4.Find the critical value
5. Find the margin of error 6. Find the confidence interval
limits

In a survey, 150 high school students were asked whether they
play sports. The survey also recorded the grade of each of the
participants. The responses are given below: Yes No Freshman 19 22
Sophomore 23 17 Junior 18 12 Senior 20 19 Use this table to
determine each of the following probabilities. Write each answer as
a percent rounded to one decimal place, i.e. 16.8%. Do not include
the percent symbol.
a) Find the probability that a randomly selected...

Records of 40 used passenger cars and 40 used pickup trucks were
randomly selected to investigate the difference in how long the
owners kept their vehicles. For cars, the mean was 5.3 years with
standard deviation 2.2 years. For pickup trucks, the mean was 7.1
years with standard deviation 3.0 years. Find a 95% confidence
interval for the true difference in means. Add a sentence. (Note
that these are all sample results.)
Using the information in Problem One, test the...

A polling company conducts an annual poll of adults about
political opinions. The survey asked a random sample of 2190 adults
whether they think things in the country are going in the right
direction or in the wrong direction. 43% said that things were
going in the wrong direction. Complete parts a and b below.
a). Calculate the margin of error for the proportion of all
adults who think things are going in the wrong direction for 90%
confidence.
b). Explain...

a survey of U.S. adults found 58% of women believe that there is
a link between playing violent video games and teens exhibiting
violent behavior. you randomly select five U.S. women and ask them
whether they believe that there is a link between playing violent
video games and teens exhabiting violent behavior. find the
probability that exactly one of them respond yes? find the
probability that at least three of them respond yes?

In September 2011, Gallup surveyed 1,004 American adults and
asked them whether they blamed Barack Obama a great deal, a
moderate amount, not much, or not at all for U.S. economic
problems. The results showed that 53% of respondents blamed Barack
Obama a great deal or a moderate amount. Calculate the 99%
confidence interval for the proportion of all American adults who
blame Barack Obama a great deal or a moderate amount for U.S.
economic problems.

1 point
In a recent survey, 834 American adults were asked if they would
give the U.S. president a favorable job performance rating. Of
those surveyed 55% gave the president a favorable rating.
Calculate a confidence interval for the true
percent of all American adults who would give a favorable rating
for the president.
(50.43%,59.57%)
(51.53%,58.47%)
(54.9%,55.12%)
(48.13%,61.87%)
(48.83%,61.17%)

Answer number 2 please.
1. Records
of 40 used passenger cars and 40 used pickup trucks were randomly
selected to investigate the
difference in
how long the owners kept their vehicles. For cars, the mean was 5.3
years with standard deviation 2.2
years. For
pickup trucks, the mean was 7.1 years with standard deviation 3.0
years. Find a 95% confidence interval
for the
true difference in means. Add a sentence. (Note that these are all
sample results.) (5)
2. Using
the information in Problem One,...

In a survey of U.S. adults with a sample size of 2002, 400 said
Franklin Roosevelt was the best president since World War II. Two
U.S. adults are selected at random from the population of all U.S.
adults without replacement. Assuming the sample is representative
of all U.S. adults, complete parts (a) through (d).
(a) Find the probability that both adults say Franklin Roosevelt
was the best president since World War II.
The probability that both adults say Franklin Roosevelt...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 14 minutes ago

asked 15 minutes ago

asked 22 minutes ago

asked 23 minutes ago

asked 26 minutes ago

asked 26 minutes ago

asked 28 minutes ago

asked 42 minutes ago

asked 43 minutes ago

asked 43 minutes ago

asked 50 minutes ago