Answer:
x=4, y=6, z=5
Step-by-step explanation:
x = 8/2 = 4
y = 12/2 =6
z = 10/2 = 5
Hope this helps!
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Answer:
0.45134
Step-by-step explanation:
Given that :
p = 0.6
n = 400
Probability that sample. Proportion falls between 0.59 and 0.62
Using Normal approximation :
Mean (m) = n * p = 400 * 0.6 = 240
Standard deviation (s) = sqrt(pq/n)
q = 1 - p = 1 - 0.6 = 0.4
s = sqrt((0.6 * 0.4) / 400) = 0.0244948
P(0.59 < p < 0.62) :
(x - m) / s
P((0.59 - 0.6) / 0.0244948) < p < P((0.62 - 0.6) / 0.0244948)
P(Z < −0.408249) < p < P(Z < 0.8164998)
Using the Z probability calculator :
0.79289 - 0.34155 = 0.45134
7 times 48 is 336
7 times 47 is 329
332/7= 47.4
7/332=.021
Well then, you do
850 = 50x + 250
-250 -250
600 = 50x
/50 /50
12 = x
or
x = 12
