A. we use the z statistic to solve this problem
z = (x – u) / s
We calculate the value of the sample mean u and standard deviation
s:
u = $30 * 304 = $9120
s = $21 * 304 = $6384
z = (9,600 – 9120) / 6384
z = 0.075
From the normal tables using right tailed test,
P = 0.47
B. At worst 11% means P = 0.11, so the z value at this is
z = -1.23
-1.23 = (x – 9120) / 6384
x = 1267.68
Answer:
yes it is
Step-by-step explanation:
that is a lap every 6 seconds .
Ghi=j
h/gi=j/gi
h=j/gi
the sign "/" means divide by
Answer: 3
Step-by-step explanation:
Since the denominator of the two fractions are already the same, we do not have to alter the fractions at all
Because the denominators are the same, all we have to worry about is the numerator, so take 67 and subtract 43 from it to get 24
As you know, 24/8 = 3, and that would be your final answer
Answer:
It is 39.3
Step-by-step explanation:
You find the circumference using the formula 2πr so you get 20π.
and then you multiply that by 225/360 bc 360 is how much the whole circle is and the 225 part is the part you want to solve.
So 20π*225/360 is about 39.3
