Answer:
the probability that exactly 30 of the 500 calculators IS 0.0495
Explanation:
Given data:
number of calculators n = 500,
percentage of defected calculators p = 0.05
From Normal approximation method;



Therefore probability is
P(X= 30) = P(29.5< X< 30.5) ( from continuous correction)
![ =P[\frac{(29.5-25)}{4.87}] < \frac{(X-mean)}{s} < \frac{(30.5-25)}{4.87} =P(0.92](https://tex.z-dn.net/?f=%0A%3DP%5B%5Cfrac%7B%2829.5-25%29%7D%7B4.87%7D%5D%20%3C%20%5Cfrac%7B%28X-mean%29%7D%7Bs%7D%20%3C%20%5Cfrac%7B%2830.5-25%29%7D%7B4.87%7D%0A%3C%2Fp%3E%3Cp%3E%0A%3DP%280.92%3CZ%3C%201.13%29%0A)
=0.0495 (from standard table of Z )
Answer:
400,000
Explanation:
7% of what number = 28,000
(0.07)(X) = 28,000
X = 400,000
(which is less than 700,000. But that makes sense because not everyone living in Michael's city is necessarily part of the labor force. Some could be kids in school, others grandparents who have retired, others people who stay at home and don't work.)
Answer: the right answers are
Is advertising influencing her?
What are her motivations?
Has she compared prices?
Is she buying at the right time?
Explanation:
took the test
The answer would be $38520 at the end of 18 yrs
C.....................................................................