Answer:
z-test.
Step-by-step explanation:
We want to perform an hypothesis test for a population mean.
In the case that the <u>standard deviation of the population is known</u> and the population distribution is normal, even if the sample is small, <u>we will use a z-test</u>.
The usual case is to not know the standard deviation of the population, in which case a t-test is adequate instead of a z-test, taking into account the degrees of freedom of the sample.
Answer:
8
Step-by-step explanation:
<h3>Answer:</h3>
<h3>Explanation:</h3>
The rate shown in your graph is 3. (rise:run = 3:1) An equation with a lesser rate will have an x-coefficient that is less than 3. The x-coefficients in your answer choices appear to be ...
Of these values, only the first and last are less than 3.
100 cm = 1m
To find 60 000cm, multiply by 600 :
60 000 cm = 600m
To convert from m to km, divide by 1000 :
600m ÷ 1000 = 0.6km
Answer:
x+55=2x-15 [being corresponding angle
55-15=2x-x
40=x
