What is the greatest common factor of 100, 20 , 60?

20

Step-by-step explanation:

Factors of 20 ; 1,2,4,5,10, 20.

Factors of 60:1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

Factors of 100:1,2,4,5,10,20,25,50,100

The greatest common factor they all share is 20

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

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step-by-step explanation: