The bradys and their maid, alice, took a trip to hawaii for their summer vacation. the travel agent told ike that the trip would cost $210 for each child plus another $315 per adult. according to the credit card receipt the trip cost a total of $2205 for all 9 of them. find the number of adults and children on the trip by writing a system of equations. explain how you got the answer. i have alot of questions like this one so i need to know how you got the answer. you

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;