Jackie and her friend were having a garage sale. during the first two hours of the garage sale 32 bookks were sold. the number of books sold during the fhird hour was 3/4 the number of books sold during the first 2 hours. during the final hour the number of books sold was 7/8 the number of books sold in the first 2 hours. if jackie and her friencd charged $0.75 per book and split the profit evenly how much did they each make off the sale of their books? a)$9.00 b) $12.00 c) 22.50 d)43.50

1/2*qr*rs

step-by-step explanation:

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;

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: