Question

Assume that a sample is used to estimate a population proportion
*p*. Find the 95% confidence interval for a sample of size
395 with 73% successes. Enter your answer as an
**open-interval** (*i.e.*, parentheses) using
decimals (not percents) accurate to three decimal places.

C.I. =

Answer #1

95% confidence interval for p is

- Z * sqrt ( ( 1 - ) / n) < p < + Z * sqrt ( ( 1 - ) / n)

0.73 - 1.96 * sqrt( 0.73 * 0.27 / 395) < p < 0.73 + 1.96 * sqrt( 0.73 * 0.27 / 395)

0.690 < p < 0.774

95% Ci is **( 0.690 , 0.774 )**

Assume that a sample is used to estimate a population proportion
p. Find the 90% confidence interval for a sample of size 395 with
267 successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places. C.I. =

1. Assume that a sample is used to estimate a population
proportion p. Find the 80% confidence interval for a sample of size
399 with 303 successes. Enter your answer as an open-interval
(i.e., parentheses) using decimals (not percents) accurate to three
decimal places.
80% C.I. =
2. Assume that a sample is used to estimate a population
proportion p. Find the 80% confidence interval for a
sample of size 315 with 18.1% successes. Enter your answer as an
open-interval...

Assume that a sample is used to estimate a population proportion
p. Find the 99% confidence interval for a sample of size 279 with
16% successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places.
C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 99% confidence interval for a sample of size 321 with
230 successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places. C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 99% confidence interval for a sample of size 262 with
137 successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places.
C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 98% confidence interval for a sample of size 199 with
52 successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places.
C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 99.5% confidence interval for a sample of size
132 with 53% successes. Enter your answer as an
open-interval (i.e., parentheses) using
decimals (not percents) accurate to three decimal places.
C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 80% confidence interval for a sample of size 231 with
70 successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places. C.I. =

Assume that a sample is used to estimate a population proportion
p. Find the 90% confidence interval for a sample of size 347 with
68% successes. Enter your answer as an open-interval (i.e.,
parentheses) using decimals (not percents) accurate to three
decimal places.
C.I. =

#7 Assume that a sample is used to estimate a population
proportion p. Find the 95% confidence interval for a sample of size
315 with 161 successes. Enter your answer as an open-interval
(i.e., parentheses) using decimals (not percents) accurate to three
decimal places.
95% C.I. =
Answer should be obtained without any preliminary rounding.
However, the critical value may be rounded to 3 decimal
places.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 19 minutes ago

asked 19 minutes ago

asked 39 minutes ago

asked 41 minutes ago

asked 46 minutes ago

asked 54 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago