What is the variance of the following data? if necessary, round your answer to two decimal places. 100, 140, 130, 180, 80, 160

a 1147.22
b 1157.22
c 1168.21
d 1179.34

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Which table shows a proportional relationship between miles traveled and gas used?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics