Answer:
the answer is 2x2+2x
Step-by-step explanation:
Answer:
You must test a sample size of at least 514 Americans.
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
.
is the margin of error.
95% confidence interval
So
, z is the value of Z that has a pvalue of
, so
.
We have that:

So





You must test a sample size of at least 514 Americans.
Answer:
B
Step-by-step explanation:
x/-5 < 9
×-5 ×-5
x < -45
x is less than -45
so, it's diagram B
I hope this helps
The answer is 11.5mile/hr
Answer:
January has the greater MAD.
Step-by-step explanation:
The MAD of January is 8. You can figure this out by finding the mean of the data (adding them all together then dividing by the number of data points), then finding the distance between each data point and the mean. You then will add all the distances together, then divide by the number of data points. The MAD of July is 2.5. See above for the process.