Deal with the following paired data r a 746 b 557 c 746 d 5

Deal with the following paired data: r = a) -.746 b) .557 c) .746 d) -.557 If you switch the roles of the explanatory and response data, then r = a) -.746 b) .557 c) .746 d) -.557 Find the critical value for an 90% confidence interval for a mean with sample size 8 when the standard deviation is unknown. a) 1.833 b) 1.895 e) 1.645 d) 1.860 Questions 37 through 39: A small business has used past data to estimate the chances a new customer will spend x dollars at his or her first visit. Below is the probability distribution they came up with P(0) = a) 0 b) 0.2401 c) 0.4 d) 0.6 The expected amount a random customer will spend is a) 20 b) 42.5 c) 56.7 d) 26 What is the probability a customer will spend more than $25? a) 0.6 b) 0.25 c) 0.3 d) 0.7

Solution

34) c 35) c 36) c 37) c 38) d 39) d