2. A school's principal wants to know if students spend about the same amount of time on homework
each night of the week. She asks a random sample of 50 students to keep track of their homework time for a
week. The following table displays the average amount of time (in minutes) students reported per night.
Night: Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Average 130
108
115
104
99
37
62
Time:
Explain carefully why it would not be appropriate to perform a chi-square goodness-of-fit test using this data.

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.