Two samples are taken with the following sample means, sizes, and standard deviations a1 = 39 ã2 = 29 nį = 46 n2 = 75 81 = 5 82 = 2 Estimate the difference in population means using a 99% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. < 41 - 42 <

From the states data set, get the descriptive statistics for the violent crime rate. For this assignment, you will need the mean, standard deviation, five-number summary (minimum, 25th percentile, median, 75th percentile, maximum), and interquartile range. Submit all answers as whole numbers--no decimal points. If you have to calculate the interquartile range by hand, you may calculate it using whole numbers as the 25th and 75 percentile. How would i calculate this?

Use the following set of numbers (6, 2, 4, 2, 8, 3, 10, 10, 2, 4) to determine the sum of squares  , sample standard deviation  , and population standard deviation  .

Use the t-table or any statistical tool and report the t-score that you multiple by the standard error to form the margin of error for a 95% confidence interval for a mean with 5 observations.   a. 2.132   b. 2.776   c. 2.015   d. 2.571

Suppose six pet food stores in the area were surveyed, and the following data shows how many types of pet food each of them carries. 7,7,9, 9, 11, 11 Calculate the sample mean and the sample standard deviation. Round your answers to three decimal places. T = Number Number S=

form a confidence interval for mean, proportion, and standard deviation.