Which expression is the best estimate of the product of StartFraction 7 over 8 EndFraction and 8 and StartFraction 1 over 10 EndFraction?

i would have to say it is c.

the answer for this question is 38

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;

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply