1. Tom took out a simple interest loan of $11,500 at 10 percent interest for 18 months. After 14 payments the balance is $3,100. He pays off the loan when the next payment is due. What is the interest?

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;

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

the radius is 2 times the diameter.

step-by-step explanation: