n= 40, Ho: p= 0.4, Ha:p<0.4, a = 0.01 ine the sample proportion. whether using the one-proportion z-test is appropriate. priate, use the one-proportion z-test to perform the specified h to view a table of areas under the standard normal curve for i to view a table of areas under the standard normal curve for mple proportion is 0.2. nteger or a decimal. Do not round.) propriate to use the one-proportion z-test?

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12.2.79
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The number of successes and the sample size for a simple random sample from a population are given below.
x = 8, n = 40, Ho:p= 0.4, Ha:p< 0.4, a = 0.01
a. Determine the sample proportion.
b. Decide whether using the one-proportion z-test is appropriate.
c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test.
Click here to view a table of areas under the standard normal curve for negative values of z.
Click here to view a table of areas under the standard normal curve for positive values of z.
a. The sample proportion is 0.2 .
(Type an integer or a decimal. Do not round.)
b. Is it appropriate to use the one-proportion z-test?
Yes
No
c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer.
A. z=
(Round to two decimal places as needed.)
B. The one-proportion z-test is not appropriate.
Transcribed Image Text:12.2.79 Question Help The number of successes and the sample size for a simple random sample from a population are given below. x = 8, n = 40, Ho:p= 0.4, Ha:p< 0.4, a = 0.01 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. a. The sample proportion is 0.2 . (Type an integer or a decimal. Do not round.) b. Is it appropriate to use the one-proportion z-test? Yes No c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. z= (Round to two decimal places as needed.) B. The one-proportion z-test is not appropriate.
( 12.2.81
Question Help
The number of successes and the sample size for a simple random sample from a population are given below.
x = 30, n = 50, Ho:p=0.7, Ha: p# 0.7, a = 0.10
a. Determine the sample proportion.
b. Decide whether using the one-proportion z-test is appropriate.
c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test.
Click here to view page 1 of the table of areas under the standard normal curve.
Click here to view page 2 of the table of areas under the standard normal curve.
a. The sample proportion is 0.6 .
(Type an integer or a decimal. Do not round.)
b. Is it appropriate to use the one-proportion z-test?
Yes, it is appropriate, because the sample
is
a simple random sample and both npo and n(1- Po) are 5 or greater.
c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer.
A.
(Round to two decimal places as needed.)
Z=
B. The one-proportion z-test is not appropriate.
Transcribed Image Text:( 12.2.81 Question Help The number of successes and the sample size for a simple random sample from a population are given below. x = 30, n = 50, Ho:p=0.7, Ha: p# 0.7, a = 0.10 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. The sample proportion is 0.6 . (Type an integer or a decimal. Do not round.) b. Is it appropriate to use the one-proportion z-test? Yes, it is appropriate, because the sample is a simple random sample and both npo and n(1- Po) are 5 or greater. c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. (Round to two decimal places as needed.) Z= B. The one-proportion z-test is not appropriate.
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