Answer:
what is the answers
Step-by-step explanation:
if it is this then the answer is Which expression is equivalent to the given expression?
8(3/4a)−8
1. 3/4a
2. 6a
3. 8(3/4a - 1)
4. 3/4a -1
then it is 3333
Answer:
t + 0.8 =1.5
Step-by-step explanation:
Our objective is to get to 1.5. we know that part of the distance is 0.8 but we don't know the other half (t).
Answer:
-5
Step-by-step explanation:
When you subtract a negative you end up adding it instead
First we need to do 12 ÷ 4 to see how many times that goes in. You get 3. Then you do
Answer:
Probability that average height would be shorter than 63 inches = 0.30854 .
Step-by-step explanation:
We are given that the average height of 20-year-old American women is normally distributed with a mean of 64 inches and standard deviation of 4 inches.
Also, a random sample of 4 women from this population is taken and their average height is computed.
Let X bar = Average height
The z score probability distribution for average height is given by;
Z =
~ N(0,1)
where,
= population mean = 64 inches
= standard deviation = 4 inches
n = sample of women = 4
So, Probability that average height would be shorter than 63 inches is given by = P(X bar < 63 inches)
P(X bar < 63) = P(
<
) = P(Z < -0.5) = 1 - P(Z <= 0.5)
= 1 - 0.69146 = 0.30854
Hence, it is 30.85% likely that average height would be shorter than 63 inches.