Question

A random sample of 294 adult Canadians was taken, and 196 of them said that they always vote in federal general elections. Find a 94% confidence interval for the proportion of adult Canadians who say that they always vote in federal general elections. |

Answer #1

A random sample of 299 adult Canadians was taken, and 206 of
them said that they always vote in federal general elections. Find
a 92% confidence interval for the proportion of adult Canadians who
say that they always vote in federal general elections.

In a random sample of 250 Winnipeggers, 80 of them said they use
transit. A 94% confidence interval for the true proportion of all
Winnipeggers who use transit is:
Note: Value of 90%(1.645 and 95%(1.960) is only provided in the
table.

In the run-up to the 2016 election, a random sample of 100
people was taken to determine a confidence interval for the
population proportion who would vote in favor of Proposition 61 to
legalize marijuana. The confidence interval was found to
be (.402 to .598).
What was the confidence level, (1-alpha)*100%, associated with
this confidence interval?
95%
90%
We would need to know the number in the sample who said they
would vote for Proposition 61. If we knew this number,
we...

3. A random sample of 78 students was interviewed, and 59
students said that they would vote for Jennifer McNamara as student
body president.
a.Let p represent the proportion of all students at this
college who will vote for Jennifer. Find a point estimate for p.
Round your answer to the nearest hundredth.
b.Find a 90% confidence interval for p. Round your answer to
the nearest hundredth and THEN change them to a percentage.
c.Interpret the meaning of the confidence...

The manager of a grocery store has taken a random sample of 196
customers. The average length of time it took these 196 customers
to check out was 3 minutes. It is known that the standard deviation
of the population of checkout times is 1 minute. The margin of
error is 0.140. Find the 95% confidence interval for the true
average checkout time (in minutes).A. 1 to 5B. 2.86 to 3.14 C. 2.883 to 3.117D. 2.990 to 3.010

A sample survey asked a random sample of 1498 adult Canadians,
“Do you agree or disagree that all firearms should be registered?”
Of the 1498 people in the sample, 1282 answered either “Agree
strongly” or “Agree somewhat.” Assuming this survey can be
considered an SRS of all adult Canadians, what is the proportion of
all Canadians who agree (as described) that all firearms should be
registered?
Your solution must include the following parts, in order. Point
form is fine.
a)...

A random sample of 994 people was taken. 262 of the people in
the sample favored Candidate A. Find 90% confidence interval for
the true proportion of people who favors Candidate A. Enter in the
lower limit of the confidence interval you found.

A random sample of 803 people was taken. 154 of the people in
the sample favored Candidate A. Find 90% confidence interval for
the true proportion of people who favors Candidate A. Enter in the
lower limit of the confidence interval you found.

In a random sample of 200 people, 154 said that they watched
educational television. Find the 90% confidence interval of the
true proportion of people who watched educational television. If
the television company wanted to publicize the proportion of
viewers, do you think it should use the 90% confidence
interval?

Educational Television: In a random sample of 200
people, 154 said that they watched educational
television. Find the 90% confidence interval of the true
proportion of people who watched educational television. Then write
in a z interval

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