www.webassign.net/web/Student/Assignment-Responses/last?dep=25791564 The method of tree-ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population o distribution. 1,271 1,278 1,292 1,236 1,268 1,316 1,275 1,317 1,275 A USE SALT (a) Use a calculator with mean and standard deviation keys to find the sample mean year x and sample standard deviation s. x = A.D. S = yr (b) When finding an 90% confidence interval, what is the critical value for confidence level? (Give your answer to three decir to %3D What is the maximal margin of error when finding a 90% confidence interval for the mean of all tree-ring dates from this the nearest whole number.) E = Find a 90% confidence interval for the mean of all tree-ring dates from this archaeological site. (Round your answers to lower limit A.D. upper limit A.D.

Use the given data values​ (a sample of female arm circumferences in​ centimeters) to identify the corresponding z scores that are used for a normal quantile​ plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile​ plot, then determine whether the data appear to be from a population with a normal distribution. 33.9​, 37.9​, 43.8​, 32.8​, 40.1 Question content area bottom Part 1 List the z scores for the normal quantile plot.   Part A -List the z scores for the normal quantile plot.     Part B- Identify the coordinates of each point in the normal quantile plot. Use ordered pairs for the form​ (x,y), where x is the sorted arm circumferences in ascending​ order, and y is the corresponding z score.   Part C- Do the data come from a normally distributed​ population?

Consider the data from the Anthropology 105 class.  The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?

Please answer the question in the picture below to answer the question in the other picture