Answer:
112.5
Step-by-step explanation:
you would then cross multiply. 90 x 100 and 80 x ?
you will then have 9000 = 80?
divide 9000 by 80 and you will get ? = 112.5
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Find the 78th term of the arithmetic sequence –4,-2,0,...
1 answer:
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Answer: The mean and variance of Y is $0.25 and $6.19 respectively.
Step-by-step explanation:
Given : You and a friend play a game where you each toss a balanced coin.
sample space for tossing two coins : {TT, HT, TH, HH}
Let Y denotes the winnings on a single play of the game.
You win $1; if the faces are both heads
then P(Y=1)=P(TT)=
You win $6; if the faces are both heads
then P(Y=6)=P(HH)=
You loose $3; if the faces do not match.
then P(Y=1)=P(TH, HT)=
The expected value to win : E(Y)=
Hence, the mean of Y : E(Y)= $0.25
Variance =
Hence, variance of Y = $ 6.19
Answer:
The closest to the maximum profit is
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
The percentage of profit is 20%
Generally the closest to the maximum annual profit at a store where the executives conducted an audit is mathematically evaluated as follows
=>
From the z-table the z-score for 0.20 is
So
=>