Question

Apple weights in an orchard are normally distributed. From a sample farmer, Fred determines the mean weight of a box of apples to be 270 oz. with a standard deviation of 10 oz. He wonders what percent of the apple boxes he has grouped for sale will have a weight of less than 255 oz.

Answer 1

A delivery driver has an average daily gasoline expense of $55.00. The standard deviation is $10.00. The owner takes a sample of 54 bills. What is the probability the mean of his sample will be between $45.00 and $65.00? Enter all answers to the nearest tenth.
Calculate a z-score for $45.00.
Give the probability for step 1.
Calculate the z-score for $65.00.
Give the probability for step 3.
Add the probabilities from steps 1 & 3.

Answer 2

for the first question
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Answer 3

do you need help with the second one

Answer 4

yes

Answer 5

for both questions

Answer 6

k so When x =45, z 45-55 divided by 10 = -1

Step : z score = -1

Step 2: P(-1<Z<0) =0.3413

Step 3 : Z score for 65 = 65-55 divided by 10 = 1

Step 4: P(0<Z<1) = 0.3413

step 5:

P(45<x<55) = 0.6826 answer is 0.6826 im pretty sure

Answer 7

thnx for da metal

Answer 8

https://questioncove.com/assets/attachments/1666173680-634fcae53b374a13ce23e400-image.png

Answer 9

one second i didnt realize that was there
lol

Answer 10

u still working it out?

Answer 11

ye

Answer 12

alr i'll wait

Answer 13

help