Answer:
The mean and standard deviation of Y are, 94 and 0.28 respectively.
Step-by-step explanation:
Let the random variable , 'Test grades on the last statistics exam' be X.
Then according to the question,
E(X) = 78 ------------(1)
and
= 0.14------------(2)
Now, according to the question,
Y = 2(X - 31)
⇒E(Y) = 2(E(X) - 31)
=
= 94 ----------------(4)
and
V(Y) = 4V(X)
⇒
⇒ = 0.28
So, the mean and standard deviation of Y are, 94 and 0.28 respectively.
Answer:
80 miles
Step-by-step explanation:
since 0.5in =20mi
2in= (2×20)/0.5
40÷0.5
=> 80mi
Answer: m∡6 = 33°.
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Since all vertical angles are congruent and have EQUAL measurements,
and ∡5 and ∡6 are vertical angles;
then, m∡5 = m∡6 .
________________________________________________
So; given m∡5 = 33° ; m∡6 = 33° .
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Answer:
I would say two cupsssssss