[Answer] In determining the sample size necessary to estimate a population proportion which of the following information is not needed?

Answer: the mean of the population

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In determining the sample size necessary to estimate a population proportion which of the following information is not needed? A random sample of 144 observations has a mean of 20 a median of 21 and a mode of 22 . The population standard deviation is known to equal 4.8 . The 95.44% confidence interval for the population mean is Answers: a. 15.2 to 24.8 b. 19.2 to 20.8 c. 21.2 to 22.8 d. 19.216 to 20.784 In determining an interval estimate of a population mean when σ is unknown we use a t distribution with n − 1 degrees of freedom The expression used to compute an interval estimate of μ may depend on any of the following factors except Using a sample statistic to estimate the population proportion is not utilizing descriptive statistics A critical value zα denotes the z-score with an area of α to its right. As the sample size increases the. ... In determining the sample size necessary to estimate a population proportion which of the following information is not needed ? the mean of the population . The level of significance in hypothesis testing is the probability of. Which concept below is not a main idea of estimating a population proportion ? A.Using a sample statistic to estimate the population proportion is utilizing descriptive statistics. B. Knowing the sample size necessary to estimate a population proportion is important. C.The sample proportion is the best point estimate of the population proportion . Sample size for estimating several proportions simultaneously (Ch 5.4 ) It is...

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