Answer:
2(a-2)
Step-by-step explanation:
12 + 2a – 8 = 2a +12-8
= 2a-4
=2(a-2)
She would sell it for $26.60 after the markup.
Use a calculator.
(23/13.8)-18=-16.333=(-16)-(1/3)
Answer:
The 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).
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:
8 out of the 20 teams in the sample had a season winning percentage better than 0.500. This means that
.
95% confidence interval
So
, 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 95% confidence interval for the true proportion of all teams that had a season winning percentage better than 0.500 is (0.1853, 0.6147).
answer 8000cm
Step-by-step explanation:
1/2=bxh
1/2×20×800