Question

when 294 college students are randomly selected and surveyed, it is found that 130 own a car. Find a 90% confidence interval for the proportion of all college students who own a car. Show all work!!

Answer #1

p = 130 / 294 = 0.442

Z for 90% confidence interval = Z_{0.05} = 1.645

confidence interval

= (0.394 , 0.490)

When 500 college students were surveyed, 30% said that they own
their car. Construct a 98% confidence interval for the proportion
of college students who say they own their cars. Please show work
each step of the process.

When 500 college students were surveyed, 30% said that they own
their car. Construct a 95% confidence interval for the proportion
of college students who say they own their cars. DON'T JUST GIVE
THE ANSWER - SHOW WORK AND EXPLAIN YOUR PROCESS EACH STEP OF THE
WAY SO THAT I CAN FOLLOW WHAT YOU DID AND CHECK YOUR WORK.

Use the given degree of confidence and sample data to construct
a confidence interval for the population proportion p. Round to
three decimal places.
When
267267
college students are randomly selected and surveyed, it is
found that
101101
own a car. Find a 99% confidence interval for the true
proportion of all college students who own a car.

Use the given degree of confidence and sample data to
construct a confidence interval for the population proportion
p.
When 291 college students are randomly selected and surveyed, it
is found that 100 own a car. Find a 99% confidence interval for the
true proportion of all college students who own a car.
Group of answer choices
0.272 < p < 0.415
0.279 < p < 0.409
0.289 < p < 0.398
0.298 < p < 0.389

When 20 campers are randomly selected and surveyed, it was found
that the average number that prefer to camp at the beach was 77.
Assume the population standard deviation is 13.2. Construct a 90%
confidence interval for the true population mean of the number of
campers who prefer to camp at the beach.
Give your answers to 2 decimal places.
Error =
< μμ <

Fifteen out of the 145 randomly selected study-abroad students
who were surveyed in a state can speak the French language.
Construct and interpret a 98% confidence interval for the
proportion of all study-abroad students in the state who can speak
French.

A career website for college students and alumni surveyed 200
recent graduates and found that 63% had accepted a job in a new
city, state, or country. The approximate standard deviation for the
distribution of sample proportion in this case is 0.034.
What is an approximate 95% confidence interval for the
population proportion who accepted a job in a new city, state, or
country (______,_______)?

13) College surveyed 900 students to learn if students would
like to switch to Coke products in school vending machines. The
survey found 396 said the college should make the switch. What is
the point estimate of the proportion of students at the college who
would say the college should switch to Coke products?
A. 396
B. 900
C. 0.44
D. 2.27
14) College surveyed 900 students to learn if students would
like to switch to Coke products in school...

Of 400
randomly selected medical students, 21 said that they planned to
work in a
rural
community. Find a 95% confidence interval for the true proportion
of all
medical students who plan to work in a rural community

Of
254 randomly selected medical students, 25 said that they planned
to work in a rural community. Find a 95% confidence interval for
the true proportion of all medical students who plan to work in a
rural community.

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