Given a+2 when a=5 I need help
2 answers:
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Answer:
The option on the top left
Step-by-step explanation:
As the equation is
We know that the circle will have a radius of 4 and will be shifted 4 units up
Answer:
The expected value of the profit is $-1
Step-by-step explanation:
The expected value of any discrete variable X is calculate as:
E(X)=X1*P(X1)+X2*P(X3)+...+X3*P(X3)
Where X1, X2, ..., X3 are the values that the variable can take and P(X1), P(X2), ..., P(X3) are their probabilities.
In this case the variable X is the dollars that can win, so:
X1=$2,000
X2=$300
x3=$20
X4=$0
Then the probabilities can be calculate as:
Replacing the variables and probabilities on the equation of expected value we get:
E(X)=$4
Additionally, the student bought a ticket by $5, so the expected profit can be calculate as:
Expected Profit = Expected Earnings - Cost = $4 - $5 = $-1
Finally, the expected value of the profit is $-1
Answer:
We conclude that that there is enough evidence to support the claim mean credit card debt for individuals is greater than $5,100.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $5,100
Sample mean, = $ 5,270
Sample size, n = 27
Alpha, α = 0.10
Sample standard deviation, s = $550
a) First, we design the null and the alternate hypothesis
We use one-tailed t test to perform this hypothesis.
b) Formula:
Putting all the values, we have
c) Now,
Since,
d) We fail to accept the null hypothesis, and accept the alternate hypothesis.
e) We conclude that that there is enough evidence to support the claim mean credit card debt for individuals is greater than $5,100.