a sample of 100 pregnancies were found to take an average of 267 days. the population deviation is known to be 13 days. find a 90% confidence interval for the true population mean.

The scale on a map is 1/4 inch equals 3/4 mile. How long is one mile on the map?

What do you multiple the number 3 by to get number negative six

if p is 2% of k. What is 50% of k intems of P and k and if 10% of a number is 7. What is 80% of the number?

What quadrilaterals can you draw that have two sides with length 7 cm and two sides with length 4 cm? Which of these quadrilaterals can have two sides with length 7 cm and two sides with length 4 cm? Select all that apply. O A. Square B. Rectangle C.

Hello! i'm new here does anybody want to be friends? i'm a girl, Russian, and play american soccer

Katya is 15 years old, which is 5/6 of her brother's age. How old is her brother?

Complete the square so that the left side of x2 + 8x - 3 = 0 becomes a binomial squared.

The numerators of any rational roots of a polynomial will be factors of the what?

What is 12-9*3*4+3 in three different ways

What is the combined land area of the countries A and B is 154,973 square kilometers. Country A is larger by 573 square kilometers. Determine the land area of each country