True pr False
a) When performing a hypothesis for a population mean it is not necessary to obtain a simple random sample.
b) The area under a normal distribution curve is 1 but the area under a uniform
distribution curve is 2
c) The formula Z=(x- mean)/sigma doesn’t work for a standard normal distribution.
d) The presence of outliers has very little (if any) effect on a regression equation

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

is this a dating site too?

i would say true? if the unit was informational and it "refreshed your understanding", then true.