Use the values on the number line to find the sampling error. x = 3.9 µ = 4.65 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 The sampling error is

A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Single Policyholders Married Policyholders ni = 412 n2 = 778 Number making claims = 75 Number making claims = 111 a. Use a= 0.05. Test to determine whether the claim rates differ between single and married male policyholders. z-value (to 2 decimals) p-value (to 4 decimals) We cannot conclude that there is the difference between claim rates. b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number.

Determine P(Z < 1.8). Use 6 decimal places in your final answer. Sample answer: 0.123456

Specifications on a cigar lighter detent are 0.3220 and 0.3200 in. Samples of size 5 are taken every 45 min with the results shown in the table below (measured as deviations from 0.3210 in to 0.0001 in.). Sample Number -5 5. -2 3 -3 -2 4 2 -1 -1 -3 6. 7. -3 -1 -1 -2 -3 -1 -4 -1 -3 -1 10 -1 -1 -1 -2 -1 11 1. 1. 12 -3 -2 -1 -1 13 0. 6. 14 -16 -4 -1 15 -7 2 a. Set up an R chart and examine the process for statistical control. (is it in control or out of-control? why) b. What parameters would you recommend for an Rchart for on ine control? c. Estimate the standard deviation of the process, Attach File