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The number of successes and the sample size for a simple random sample from a population are given below. X=7, n=28, Hop=0.2,
c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to
OA. -Za- (Round to two decimal places as needed) OB. 1912 + (Round to two decimal places as needed)
OC. Za (Round to two decimal places as needed) OD. The one proportion z test is not appropriate What is the conclusion of the
O A. Reject Ho, the data do provide sufficient evidence to conclude that p>0.2. O B. Do not reject Ho, the data do not provid
O E. The one-proportion z-test is not appropriate
Areas under the standard normal curve Second decimal place in z 006 005 004 0.03 009 0.08 0.07 0.02 0.01 0.00 2 38 -3.7 36 -3
Areas under the standard normal curve Second decimal place in 003 004 005 0.06 000 002 0.07 001 O.GR 00 0.1 02 03 04 OS 06 0.
math   Statistics-And-Probability   
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Answer #1

Here we have: n= 28 x= 7 Sample proportion: 7 = - = 0.25 n 28 a=0.05 Hypothesis: H.; P=0.2 H:P>0.2 Test statistics: Z-test z

Critical value: Zcrit= za = 20.05 = 1.65 Correct option “B” Do not reject H.; the data do not provide sufficient evidence to

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