Your company sells exercise clothing and equipment on the Internet. To design the
clothing, you collect data on the physical characteristics of your different types of
customers. We take a sample of 74 male runners and find their mean weight to be 62.19
kilograms. Assume that the standard deviation is s = 4.5. Using internet research you see
that the averaged male weight should be 61.3 kg. You want to see if there is evidence to
suggest the average male weight is different than 61.3 kg.
What kind of test is this?

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )