Asmall publishing company is planning to publish a new book. the production costs will include onetime fixed costs (such as editing) and variable costs ( such as printing). there are two production methods it could use. with one method, the one-time fixed costs will total $44,641, and the variable costs will be $12.25 per book. with the other method, the one time fixed costs will total $18,720, and the variable costs will be $24.50 per book. for how many books produced will the costs from the two methods be the same

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;