You may need to use the appropriate appendix table or technology to answer this question. A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 580. (a) How large was the sample used in this survey? 529 X (b) What is the probability that the point estimate was within 125 of the population mean? (Round your answer to four decimal places.)

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You may need to use the appropriate appendix table or technology to answer this question.
A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 580.
(a) How large was the sample used in this survey?
529
x
(b) What is the probability that the point estimate was within 125 of the population mean? (Round your answer to four decimal places.)
Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question. A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 580. (a) How large was the sample used in this survey? 529 x (b) What is the probability that the point estimate was within 125 of the population mean? (Round your answer to four decimal places.)
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