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An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population of normal adults. Find the
An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% condence that the sample mean is within 5 IQ points of the true mean. Assume that 0 = 13 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. E { The required sample size is D. (Round up to the nearest integer.) Would it be reasonable to sample this number of students? Yes. This number of IQ test scores is a fairly large number. Yes. This number of IQ test scores is a fairly small number. No. This number of IQ test scores is a fairly large number. No. This number of IQ test scores is a fairly small number. Identify the type I error and the type II error that correspond to the given hypothesis. The percentage of households with more than 1 pet is greater than 65%. E) Identify the type I error. Choose the correct answer below. {:3 A. C. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is greater than 65% when the percentage is actually equal to 65%. Reject the null hypothesis that the percentage of households with more than 1 pet is equal to 65% when that percentage is actually equal to 65%. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is equal to 65% when that percentage is actually greater than 65%. Reject the null hypothesis that the percentage of households with more than 1 pet is greater than 65% when that percentage is actually greater than 65%. Identify the type II error. Choose the correct answer below. {:3 A. C. Reject the null hypothesis that the percentage of households with more than 1 pet is greater than 65% when that percentage is actually greater than 65%. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is greater than 65% when the percentage is actually equal to 65%. Reject the null hypothesis that the percentage of households with more than 1 pet is equal to 65% when the percentage is actually equal to 65%. Fail to reject the null hypothesis that the percentage of households with more than 1 pet is equal to 65% when that percentage is actually greater than 65%
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