Answer:
(5.216) mean = 61.71
(5.217) standard deviation = 8.88
(5.218) P(X>=60) = 0.9238
(5.129) L = 79, U = 69
(5.130) P(X> or = U) = 0.7058
Step-by-step explanation:
The table of the statistic is set up as shown in attachment.
(5.216) mean = summation of all X ÷ no of data.
mean = 432/7 = 61.71 birds
(5.217)Standard deviation = √ sum of the absolute value of difference of X from mean ÷ number of data
S = √ /X - mean/ ÷ 7
= √551.428/7
S = 8.88
(5.218) P (X> or = 60)
= P(Z> or =60 - 61.71/8.8 )
= P(Z>or= - 0.192)
= 1 - P(Z< or = 0.192)
= 1- 0.0762
= 0.9238
(5.219)the 15th percentile=15/100 × 7
15th percentile = 1.05
The value is the number in the first position and that is 79,
L= 79
85th percentile = 85/100 × 7 = 5.95
The value is the number in the 6th position, and that is 69
U = 69
5.130) P(X>or = 60)
= P(Z>or= 69 - 61.71/8.8)
= P(Z> or = 0.8208)
= 1 - P(Z< or = 0.8209)
= 1 - 0.2942
= 0.7058
90-73=17
answer:17 hahahaaha
Answer:
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Step-by-step explanation:
Let the missing number be 'x'
⇒
Distribute x through the parentheses
⇒
Swap the sides of the equation
⇒
Add the numbers
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Collect like terms
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Divide both sides of the equation by 8
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Calculate
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Hope I helped!
Best regards!
Answer:
x=12
Step-by-step explanation:
We know that a right angle is 90 degrees. So we can make the equation
Now, we can solve fore X! We can combine 35 and 7 to make the equation
. In order to isolate x we have to subtract 42 from both sides, getting us the equation
Now, in order to isolate x we must divide each side by 4, getting us the equation
. To prove that x=12, we can subsitute x for 12. This means that we can do
which simplified, is 90=90, making x=12 true. Hope this helps :)
Answer:
Grace is right
Step-by-step explanation:
91 x 0.30 = 27.3
91 plus 27.3 equals to 118.3