Answer:
a) P=0.019
b) P=0.263
c) P=0.794
Step-by-step explanation:
We assume that the poll gives the population's proportion of respondents said that their jobs were sometimes or always stressful (p=0.8).
Then, a sample of size n=190 is taken.
The sample mean is:
The sample standard deviation is:
The probability that 140 or fewer workers find their jobs stressful is:
Note: a correction for continuity is applied.
The probability that more than 155 workers find their jobs stressful is
The probability that the number of workers who find their jobs stressful is between 145 and 158 inclusive is:
Divide 455 by 65 and get 7 multiply it by 4 and get 28. 28 dvds will be given away.
Answer: sale: 536
discount: 33%
33/100*536=
Step-by-step explanation:
1- I assume the cost of the suit is $536, not 536%.
So the % of the part times $536= Original price
Remember, $536 is 77% of the original price.
536x0.77=$696.10
Since the suit was 33% off, and since the sale price of the suit was $536
Then the suit was sold for 67% of its original price
Therefore, 67% of its original price (p) equals $536, or .67(p) = 536
.67p = 536
p = 536 � .67 = $800
Original price of suit was $800
None of the equations are true they are all false when you plug in 3.5 for x
