Can you put a picture cause that’s a lot to read and remember
81/450 is 0.18.
If you move the decimal place to the right two spots, you've got your percentage.
18% said they preferred country music.
Answer:
A reflected across the x-axis followed by a transferred or whatever it called(start with a t)across the y-axis
Step-by-step explanation:
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.