Answer:
a) X has a mean of 25 and a variance of 8.
b) The probability that the total weight X is between 22 and 28 oz is 0.711.
Step-by-step explanation:
We have to calculate the mean and variance of a sum of random normal variables.
We can apply the rule for mean and variance for sum of independent variables:

Then, the mean and variance of X is:

We can calculate the probability that X is between 22 and 28 as:

1 is PQR and RQP
2 is ABC and CBA
3 is STU and UTS
Answer:
Step-by-step explanation:
<u>Inscribed angle is half the intercepted arc measure.</u>
- m∠PQR = 1/2x
- x = 2m∠PQR
- x = 2(74°) = 148°
Answer: New balance would be - $43.35
Explanation: -12.79 - 30.56 = -43.35
Answer:
I think it is this I'm not 100% sure tho
- feet
- Square feet
- feet
- cubic