Answer:
200 = c
Step-by-step explanation:
100/45=2.2.
2.2x90= 200.
Answer:

Step-by-step explanation:
The firm tests 75 parts, and finds that 0.25 of them are notusable
n = 75
x = 0.25 \times 75 = 18.75≈19



Confidence level = 95%
So, Z_\alpha at 95% = 1.96
Formula of confidence interval of one sample proportion:


Confidence interval 
The answer to you question is B
the shorter sides are 4 inches and the longer sides are 21 inches long
Answer:
s=50.999 and you can round it to s=50.1
Step-by-step explanation: