Answer:
Answer: $210 profit
Step-by-step explanation:
275-65 =210
you have to make 5 A's, this is because 35-10=25 25/5=5 and 5x5 = 25 + 10= 35
final answer: 5 A's
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:

The answer would be 7. The two minus signs cancel each other out and turn into a plus sign.
Answer:
Step-by-step explanation:
Even number on spinners are 5 out of 10 probability of it is 1/2 and probablity of coin landing on tails also 1/2
Probability of compound event is probability of first event multiplied by probability of second even
So 1/2×1/2=1/4
Second one is 9/10×1/2=9/20