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The number of successes and the sample size for a simple random sample from a population are given. a. Determine the sample proportion. b. Decide whether using the one-proportion z-interval procedure is appropriate. c. If appropriate, use the one-proportion z-interval procedure to find the confidence interval at the specified confidence level x-75, n-250, 95% level a. What is the sample proportion? b. Is the one-proportion z-interval procedure appropriate? OA. No, because x is less than 5. O B. Yes, because x and n-x are both at least 5. ○ C. Yes, because x or n-x are at least 5. O D. No, because n-x is less than 5. c. Select the correct choice below and fill in any answer boxes within your choice A. The 95% confidence interval is from「to

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O) sample paton 75. =10-30 250 구 n-x-250-75 = 175 Ans 3 0 af least 5 a/1 군 = o. 025 M ce のIPTV 0.30 ± 1.96 x 10.30x( 1-0:30) о. З о士1.96 x 0.02898 0.30 ± 0.0568 2 5 0 eco) tuce

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