Week 2

2. Who makes the most money in week 2: Chris, Michelle, or Alex?

a. Chris still makes a base salary of $150 per week, but her commission this week is a
graduated rate of 2.5 percent on the first $1,000 and 3.5 percent for all sales over $1,000. Her sales this week were again $1,500.

b. Michelle cut back her time at the Rogers' to 10 hours so she could increase her hours at the Pringles' to 28 hours.

c. This week Alex is paid an hourly rate of $7.00 instead of the piecework rate. Each day,
Monday through Friday, he clocked in at 9:15 A. M. and clocked out at 2:25 P. M.

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =