The z-score is given by:
Z-score=(x-μ)/σ
where:
μ=mean
σ=std deviation
From the information:
mean for 20-29 year old man is μ=69.669 and std deviation is σ=3.23
mean for 20-29 year old woman is μ=64.564 and the std deviation is σ=3.83
the z-score for 75 inch men is:
z-man=(75-69.669)/3.23=1.651
the z-core for 70 inch woman:
z-woman=(70-64.564)/3.83
=1.42
From the above we conclude that the z-score for the man is relatively larger than that of the women, this means that the man is taller.
The answer is A.
Answer:
There are 24 dimes
Step-by-step explanation:
we can make an equation and then solve it to find our answer.
n = number of nickles at $0.05 each
4d = number of dimes at $0.10 each
(0.5)n + (0.10)(4n) = 5.40
We now solve this
First, multiply
0.5d+0.4d=5.40
then add
0.9d=5.40
then divide
D=6
Then, multiply by four since there are four times as many dimes
6x4=24
There are 24 dimes
9-2(-3)+6= 9+6+6 Your answer should be 21 if I read your question correctly