Answer:
x = 8
Step-by-step explanation:
The mean is the average of the population.
Multiplying the mean by 8 terms will get you the total sum.
12 * 8 = 96
Subtracting all the values from the total sum should get you x.
96 - 18 - 15 - 18 - 3 - 3 - 19 - 12 = 8
Answer:
The 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).
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
.
Suppose a sample of 333 tankers is drawn. Of these ships, 257 did not have spills.
333 - 257 = 76 have spills.
This means that
80% confidence level
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 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).
Step-by-step explanation:
if Thomas is what is brother is 8 cm tall how tall is Tom so all you have to do is have to minus Thomas's house minus his brother's house and I guess that's going to give you 11 - 160 - 8 + 60 - that's going to give you 160 - 8 is equals to 172
Answer:
Hi there!
Your answer is:
width=15
Length=25
Step-by-step explanation:
L=2w-5
P=80
Perimeter formula
L+L+W+W=P
(2w-5)+(2w-5)+w+w=80
6w-10=80
+10
6w=90
/6
w=15
Plug in width in length formula
L=2w-5
2(15)-5
30-5
L=25