The experiments on new drugs a and b revealed proportions of their significant efficiency as pˆa=0.73 and pˆb=0.84 (of all the tests). the margin of error is 0.07 and is the same for both of the data samples. use this information to give a range of plausible values for the proportions for a 95% confidence interval.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)