Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if it has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected, and 12 defective parts are found in the sample from machine 1 whereas 10 defective parts are found in the sample from machine 2. Construct a 95% CI on the difference in the two fractions defective.

There is not sufficient evidence to support the claim that there is a difference in these proportions

0.0540

Step-by-step explanation:

attached

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7