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:

Answer:
try the third option
Step-by-step explanation:
At least I'm trying
Answer:
Well it could be 25 and 69 or 30 and 65
Step-by-step explanation:
Not sure if I answered right but hope I helped!
Answer:
6
Step-by-step explanation:
The area of each of the squares is 3. There's 2 so it's 6.