A) Attached picture
B) 
C) Not sure what this means
D) Multiplying both sides by 20,
m.
Answer:
Step-by-step explanation:
Answer:
mean/average is calculated by adding all of the values and dividing by the number of values
ur welcome queen besitie slay
3/8 as a fractions and 0.375 as a decimal
Answer:
65.827% of the apples have diameter between 3.5 and 4.3 inches.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X.
So, to find the proportion of apples with diameter between 3.5 and 4.3 inches, we subtract the pvalue of the zscore of X = 4.3 by the pvalue of the zscore of X = 3.5.
The diameters of apples from a certain farm follow normal distribution with mean 4 inches and standard deviation 0.4 inch. So
,
.
For X = 4.3



Z = 0.75 has a pvalue of 0.77337
For X = 3.5



Z = -1.20 has a pvalue of 0.1151
Subtracting

65.827% of the apples have diameter between 3.5 and 4.3 inches.