Answer:
2.3 b
Step-by-step explanation:
i got it right
Like terms: and , and , and
Not like terms: and , and , and
Two or more terms are called like terms if they have same variables and powers.
and are like terms because they have same variable y with same power 2.
and are not like terms because they have same variable y with different powers.
and are like terms because they have same variables kt with same power 1.
and are like terms because both are constant.
and are not like terms because one have variable and other is constant.
and are not like terms because they have different variables.
Answer: 12.5
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Step by step explanation:
Michael is running for president. The proportion of voters who favor him is 0.3. A simple random sample of 100 voters is taken.
a)
What is the expected value :: n*p = 100*0.8 = 80
standard deviation:: sqrt(n*p*q) = sqrt(80*0.2) = 16
where q is proportion of voters who do not favor Michael. (q=0.2)
and shape of the sampling distribution is binomial distribution which is approximately a bell shaped.
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what is the probability that the number of voters in the sample who will not favor Michael will be more than 16
P(X < 16.0) = P((x - 20) / 4.0) < (16.0 - 20) / 4.0) = P(Z < -1.00) = .1587
P(X > 16.0) = 1 - 0.1587 = 0.8413