The mean height of male adults in Ohio is 69.1 inches. We want to know whether this is different from the national average height for male adults (according to the CDC). A) Identify the dependent (DV) variable
B) Identify the levels of the independent variable (IV)
- In these specific problems, these are two groups of people:
(A = sample vs. B = population or norm/data based on a population)
C) Indicate whether the researcher’s hypothesis is directional or non-directional
- Directional: A is (higher/lower) than B
- Non – directional: A is different from B
D) Write the null and research hypotheses (H0 and H1) in your own words

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

a

step-by-step explanation:

the answer is a