Online shopping. Online shopping statistics are routinely reported by www. shop. org. Of interest to many online retailers are gender-based differences in shopping preferences and behaviors. The average monthly online expenditures are reported for males and females: Male Female n 45 45 Mean $350 $310 Standard deviation $95 $80 You suspect that male shoppers are spending more than the female shoppers. Which among the following test should you use? Group of answer choices

two sample z test
two sample pooled-t test (equal population standard deviation)
two sample t test with unequal population
standard deviation paired t test

Find the value of x for which the lines are parallel.

X– 4 = 12.5 can be written in words as

Amanufacturing firm has been averaging 16.8 orders per week for several years. however, during a recession, orders appeared to slow. suppose the firm’s production manager randomly samples 31 weeks and finds an average of 15.6 orders with a standard deviation of 2.3 orders. using a 0.025 significance level, test whether the mean number of orders has decreased. type the full 5 step procedure into the answer box, then for multiple choice practice, answer the following: 1. what is the name and symbol of the parameter that you are testing? 2. what is the symbol and value of the point estimate of that parameter? 3. what distribution are you using to test this parameter? 4. what is the critical value? 5. what is the test statistic value? 6. what is the p-value?