Answer: look at my work its 10 pi cm ^2
Step-by-step explanation:
The distribution of X is X ~ N (20 , 6) and the probability that this American will receive no more than 24 Christmas cards this year is 0.7486.
<h3>Probability</h3>
a. Distribution
X ~ N (20 , 6)
b. P(x ≤24)
= P[(x - μ ) / σ (24 - 20) / 6]
= P(z ≤0.67)
= 0.74857
=0.7486
Hence:
Probability = 0.7486
c. P(21 < x < 26)
= P[(21 - 26)/ 6) < (x - μ ) / σ < (24 - 20) / 6) ]
= P(-0.83 < z < 0.67)
= P(z < 0.67) - P(z < -0.)
= 0.74857- 0.2033
= 0.54527
Hence:
Probability =0.54527
d. Using standard normal table ,
P(Z < z) = 66%
P(Z < 0.50) = 0.66
z = 0.50
Using z-score formula,
x = z× σ + μ
x = 0.50 × 6 + 20 = 23
23 Christmas cards
Therefore the distribution of X is X ~ N (20 , 6) and the probability that this American will receive no more than 24 Christmas cards this year is 0.7486.
Learn more about probability here:brainly.com/question/24756209
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I loved doing these! anyway, the answer in order would be..
2x +2
6x +6
20x +4
20x +30
4x +8
12x +6
9x
5x +15
8x +12
24x +12
and 42x +18
Your welcome ;)
Hello!
Since we are rounding until tenths, the answer would be 3879.
Since a tenth is the first decimal of a number, we just round it and get that.
Hope this helped! c:
Answer: D 5x=30
Step-by-step explanation
You just substitute 6 into the equations to see if they make the equation true.
