How much sugar do reduced sugar cookies typically have? you take a random sample of 51 reduced-sugar cookies and test them in a lab, finding a mean sugar content of 3.2 grams and a standard deviation of 1.1 grams of sugar. create a 99% confidence interval for the mean grams of sugar.

Step-by-step explanation:

The confidence interval for population mean is given by :-

Given : Sample size : n= 51   ( >30 , that means its a large sample)

Sample mean :

Standard deviation :

Significance level :

Critical value :

Now, the 99% confidence interval for the mean grams of sugar will be :-

Hence, the 99% confidence interval for the mean grams of sugar =

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21