What is the area of a circle that has a circumference of 87 pie
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
I'm sorry that I cannot show you my work as the equation generator does not support dividing polynomials.
Answer: (0.665 , 0.777)
Step-by-step explanation:
Given : Sample size of consumers: n=420 ;
Number of consumers say their ColorSmart-5000 television sets did not need a repair=303
The the sample proportion for consumers say their ColorSmart-5000 television sets did not need a repair :
Significance level :
Critical value =
The confidence interval for population proportion is given by :_
i.e.
Hence, a 99 percent confidence interval for the proportion of all ColorSmart-5000 television sets that have lasted at least five years without needing a single repair = (0.665 , 0.777)