Answer:
Step-by-step explanation:
We need to simplify
We collect LCM to get;
Therefore:
Also we need to simplify:
We collect LCM to get;
Therefore
Answer:
b
Step-by-step explanation:
ANSWER:
EXPLANATION:
A simple random sample of size has mean and standard deviation. Construct a confidence interval for the population mean. The parameter is the population The correct method to find the confidence interval is the method.
The sample size is not given. Mean and Standard Deviation are not given.
To construct a confidence interval for the population mean, first find out the margin of error of the sample mean. This is why you need a confidence interval. If you are 90% confident that the population mean lies somewhere around the sample mean then you construct a 90% confidence interval.
This is equivalent to an alpha level of 0.10
If you are 95% sure that the population mean lies somewhere around the sample mean, your alpha level will be 0.05
In summary, get the values for sample size (n), sample mean, and sample standard deviation.
Make use of a degrees of freedom of (n-1).
Answer:
16
Step-by-step explanation:
7x-5+4x-7+x=180
11x-12+x= 180
12x-12=180
+12 = +12
12x = 192
/ 12 / 12
= 16
The perimeter is 12 feet. This is because a square has equal sides. So if one side of the square garden is 3 feet then the other sides are 3 feet as well. To find the perimeter you add 3 + 3 + 3 + 3 (since there are four sides) and your answer is 12. Hope this helps!
