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A(x)= 3m(x)+4 in standard form
1 answer:
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Answer:
Approximate volume of ice cream = 3.03 inches
Step-by-step explanation:
Given - An empty ice cream cone has a height of 3.02 inches and a radius
of 0.98 inches.
To find - What is the approximate volume of ice cream it will hold within the cone ?
Proof -
We know that,
Volume of the cone =
where
r is the radius of the cone
h is the height of the cone
Here,
Given that,
r = 0.98 inches
h = 3.02 inches
So,
Volume =
= ( Consider the value of
= 3.14)
= 3.0373
∴ we get
Approximate volume of ice cream = 3.03 inches
So,
The correct option is - G. 3 in 3
Answer:
a) P(Y > 76) = 0.0122
b) i) P(both of them will be more than 76 inches tall) = 0.00015
ii) P(Y > 76) = 0.0007
Step-by-step explanation:
Given - The heights of men in a certain population follow a normal distribution with mean 69.7 inches and standard deviation 2.8 inches.
To find - (a) If a man is chosen at random from the population, find
the probability that he will be more than 76 inches tall.
(b) If two men are chosen at random from the population, find
the probability that
(i) both of them will be more than 76 inches tall;
(ii) their mean height will be more than 76 inches.
Proof -
a)
P(Y > 76) = P(Y - mean > 76 - mean)
= P( ) >
)
= P(Z > )
= P(Z > )
= P(Z > 2.25)
= 1 - P(Z ≤ 2.25)
= 0.0122
⇒P(Y > 76) = 0.0122
b)
(i)
P(both of them will be more than 76 inches tall) = (0.0122)²
= 0.00015
⇒P(both of them will be more than 76 inches tall) = 0.00015
(ii)
Given that,
Mean = 69.7,
= 1.979899,
Now,
P(Y > 76) = P(Y - mean > 76 - mean)
= P( )) >
)
= P(Z > )
= P(Z > ))
= P(Z > 3.182)
= 1 - P(Z ≤ 3.182)
= 0.0007
⇒P(Y > 76) = 0.0007