Answer: z-test for population mean.
Step-by-step explanation:
Given : purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
So the null hypothesis and alternative hypothesis will be :-
![H_0:\mu=\$675\\\\ H_a:\mu\neq\$625](https://tex.z-dn.net/?f=H_0%3A%5Cmu%3D%5C%24675%5C%5C%5C%5C%20H_a%3A%5Cmu%5Cneq%5C%24625)
It means the test will be for population mean.
We assume that this is normally distributed.
We know that we use t-test for sample size less than 30 and z-test for sample size greater than 30 .
Since the sample size is 30, so the test use here is z-test for population mean.
<span>A </span>regular triangle<span> is one for which all </span>sides<span> are </span>congruent<span> and all </span>interior angles<span> are congruent, the sum of the interior angles are always 180°, so 180 : 3 = 60°
60°</span>
Answer:
129 = x
Step-by-step explanation:
The exterior angle is equal to the sum of the opposite interior angles
47+82 = x
129 = x
First convert all your measurents into inches 600in, 480in,18in then multiply them to get 5184000 cubic inches, convert cubic inches to gallons and you have 22441US gal lqd divide 22441 by 1000 and it will take you 22.441 hours