Answer:
1) C
2) C
3) A
Step-by-step explanation:
1) The right answer is C.
Each volunteer is a pair, consisting of the test of each chair. The difference can be compared for each individual and treated as a paired t-test.
2) The right answer is C.
There is no paired relation between the houses of each sample. There are two independent samples with the same sample size.
3) The right answer is A.
The hours are selected at random, so there is no relation between the hours picked for each worker. There are two indpendent samples with the same sample size.
Answer:
C
Step-by-step explanation:
Answer:
you can use a protector for finding the angles and a ruler finding the length of the lines
SOLUTION:
A normal distribution would model this situation because the distribution is approximately symmetrical, thus the mean, median and mode are approximately the same and the population size is large ( greater than 30).
There are 360 degrees so divide 360 by 20 and get 18 degrees