Answer:
-2b + 10
Step-by-step explanation:
(4b + 7) - (6b - 3)
4b + 7 - 6b + 3
-2b + 10
Answer:
4
Step-by-step explanation:
has most number of
Answer:
c. ASA
Step-by-step explanation:
Answer:
A sample of 1032 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
The margin of error is:

A sample of 300 components showed that 20 were defective.
This means that 
99% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
How large a sample is needed to estimate the true proportion of defective components to within 2.5 percentage points with 99% confidence?
A sample of n is needed.
n is found when M = 0.025. So






Rounding up
A sample of 1032 is needed.