12.2.79Question HelpThe 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 = 0.01a. 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?YesNoc. 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. ( 12.2.81Question HelpThe 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 = 0.10a. 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 sampleisa 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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Description: 12.2.79Question HelpThe 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 = 0.01a. Determine the sample proportion.b. Decide whether using the one-proportion z

12.2.79) Given that x =8, n=40 The null and alternative hypothesis is, Ho: p = 0.4 , Ha: p < 0.4 (a) The sample proportion is, p^ = xn=840=0.2 Thus, the sample proportion is 0.2. (b) Compute, np= 40*(0.40)=16 >5 n*(1-p)=40*(1-0.40)=40*0.60=24>5 Yes , it is appropriate to use one-proportion z-test. C) The z test statistic is,12.2.81) a) Given that x =30 and n= 50 The null hypothesis and alternative hypothesis is, Ho: p = 0.7 , Ha: p ≠ 0.7 The sample proportion is, b) Yes , it is appropriate , because the sample is a simple random sample and both np0 and n(1-p0) are 5 or greater. c) The z test statistic is,

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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?

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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