Answer:
22.5
Step-by-step explanation:
2.5/100= 0.0250
0.025 x 900 = 22.5
Minus the 21 from the other side of the equation making it 7x=-21 then u divide the 7 from the x to the -21 resulting in x=-3
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
17 dollars total for Jose and Mila's jelly beans.
<em>Add 1.5 and 2.75 together to get 4.25</em>
<em>Multiply 4.25 by 4 to get 17</em>
