Answer:
16%
Step-by-step explanation:
20/125 = 0.16
0.16 x 100 = 16% (multiply by 100 to get a percentage)
This can be solved 6 ways depending on how many numbers u have
Answer:
1.28
Step-by-step explanation:
Given that a sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 53% of the chips do not fail in the first 1000 hours of their use.

(Two tailed test for testing sample proportion with population proportion)
Std error of proportion assuming p = 0.53 is

p difference = 0.02
Z= test statistic = p diff/std error = 1.2775~1.28
You do the same as whole numbers! Make sure the denominators are the same, add them all up, and then divide by the number of fractions there are!
Your best answer would be c or d but mainly d