You need to subtract the bonus points form the final score: 91-4=87
Answer:
2.28%
Step-by-step explanation:
mean = 5 years = 60 months
standard deviation = 6 months
X = number of years the tires will last
P = probability of ...
z = z-score
6 years = 72 months
z = (# of months - mean) / standard deviation
z = (72 - 60)/6
z = 12/6
z = 2
P(X > 72) = 1 - P(X < 72)
= 1 - P(z < 2)
(using a Standard Normal Probabilities Table we can see that P(z < 2) = .9772)
So:
= 1 - .9772
= 0.0228 OR 2.28%
Answer:
50 people
Step-by-step explanation:
-An experimental unit is any physical entity or person or animal that can be randomly assgned to a treatment.
-Such a unit is usually referred to as a unit of statistical analysis.
-Both control and actual experimental units are units of statistical analysis despite receiving different treatments.
-Hence, the experimental units of the study is 50 people.
E is the answer to this question
