Answer:
Step-by-step explanation:
From the given information:
the mean 
= 2300
Standard deviation = 
Standard deviation (SD) = 214.4761
TO find:
a) 



From the Z-table, since 5.595 is > 3.999

P(x > 3500) = 0.0001
b)
Here, the replacement time for the mean 
= 0.25
Replacement time for the Standard deviation 

For 115 component, the mean time = (115 × 20)+(114×0.25)
= 2300 + 28.5
= 2328.5
Standard deviation = 
= 
= 
= 
= 
= 214.482
Now; the required probability:




From the Z-table, since 8.376 is > 3.999
P(x > 4125) = 1 - 0.9999
P(x > 4125) = 0.0001
Answer:
B $12.69
Step-by-step explanation:
Divide 84.63 by 100 to get 1% of the bill and then multiply the answer by 15 for 15% and round it:
The closest answer would be B $12.69.
The answer to the question they gave you is D
Answer:
He made 10.4 batches of chocalate chip cookies.
He made 156 chocalate chip cookies and 96 peanut butter cookies.
Step-by-step explanation:
Sense there's a total of 252 cookies you would subtract the 96 cookies from 252 to get 156 then divide it by 15 to get 10.4 which is how much batches he made of chocalate chip cookies.
Tasty!
Yes, the two ratios are equivalent. If you multiply both the numerator and the denominator by 6, you will get 18/42.