Random samples of 100 parts from production line a had 12 parts that were defective and 100 parts from production line b had 5 that were defective. what is the test statistic for the hypothesis test of a difference between the two proportions?
a. z = 2.16
b. z = 0.7
c. z = 1.77
d. z = 2.16

Option C) z = 1.77

Step-by-step explanation:

We are given the following information in the question:

For line A:

Number of defective part, x = 12

For line B:

Number of defective part, y = 5

Test statistic =

Putting the values, we get:

Option C) z = 1.77

answer: check all that apply, where the options?

step-by-step explanation:

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: