I'M soo not sure on this one. But if I did the math correctly your answer would be C. 64
Hoped I help!
Also sorry if its wrong.
Answer:
87
Step-by-step explanation:
The mean is 87, multipliy all the numbers then devide that number by 6!
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 volume of a cone with a height of 27cm and a radius of 13cm is 4748.36242611007.Then you round it to the nearest tenth which would be 4,778.4 which would be the answer
you work out that by v=PI radius squared height divided by 3
Answer:
6
Step-by-step explanation: