Question

24) Choose the statement that best describes what is meant when we say that the sample mean is unbiased when A) The standard deviation of the sampling distribution (also called the standard error) and the population estimating the population mean. standard deviation are equal. B) On average, the sample mean is the same as the population mean. C) The sample mean will always equal the population mean. D) None of these. Use the following information for the next two questions. ll large hamburgers. A random sample of 25 hamburgers is taken and each is weighed. The mean of this sample is 0.26 pound and the standard deviation of 0.03 pound. 25) Suppose you were asked to find the 95% confid ence interval. What MARGIN of error should you use? Use the multiplier t-2.064 to calculate and round your answer to three de B) 0.061 A) 0.012 C) 0.107 D) 0.006 26) Find the 95% confidence interval for the population mean weight of hamburgers sold by this chain. A) (0.250, 0.270) B) (0.209, 0.311) C) (0.198, 0.266) D) (0.248, 0.272)

Answer 1