Answer:
express the following as a fraction and a ratio
6, the formula is (b1+b2/2)*h
8+12/2=10
10*h=60 so h=6
Answer:

Step-by-step explanation:
Given the mean is 3.2, standard deviation is 0.8 and the sample size is 64.
-We calculate the probability of a mean of 3.4 as follows:
#First determine the z-value:

#We then determine the corresponding probability on the z tables:

Hence, the probability of obtaining a sample mean this large or larger is 0.0228