#4 a reflection across the x-axis is the only correct answer , the other ones aren’t correct .
Answer:
Step-by-step explanation:
4/3-7/9=12/9-7/9=5/9.
Answer:
6.75
Step-by-step explanation:
(1928912×192) ÷ (182×9) + 4- (12378923789×-52)
= 6.437042e11
Answer:
The correct answer is
(0.0128, 0.0532)
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, we have the following confidence interval of proportions.

In which
Z is the zscore that has a pvalue of 
For this problem, we have that:
In a random sample of 300 circuits, 10 are defective. This means that
and 
Calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool.
So
= 0.05, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The correct answer is
(0.0128, 0.0532)