Answer:
Step-by-step explanation:
given that certain tubes manufactured by a company have a mean lifetime of 800 hours and a standard deviation of 60 hours.
Sample size n =16
Std error of sample mean = 
x bar follows N(800, 15)
the probability that a random sample of 16 tubes taken from the group will have a mean lifetime
(a) between 790 and 810 hours,
=
(b) less than 785 hours

, (c) more than 820 hours,

(d) between 770 and 830 hours
=
Answer:
You probably should have gave them 2/3 of what they did. I wouldn't call you a scammer, but it was not fair.
Answer:
a
Step-by-step explanation:
that is the answer
You divide (1354.5 kg of potatoes) by (12 stores in the Bronx).
The quotient is ________ kg of potatoes per store in the Bronx.
The division is easy to do with your pencil or your calculator.
It will cost $16.6 to buy 20 cookies. Hope it help!