The Sweater Shack is offering a 15% discount on sweaters. If the regular price of a sweater is $30.00, what is the discount? What is the sale price?

The discount is $4.50. The sale price is $25.50.

Step-by-step explanation:

Discount: 30(.15)=4.50

Sale Price: 30.00-4.50=25.50

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;