Kelsey scored the following points in her first six basketball games:
1 answer:
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Answer:
The y-intercept is y = -$150
Step-by-step explanation:
We know that:
Each necklace is sold for $8.
The total cost for Michelle is $150.
The profit equation is:
Profit = Revenue - Cost.
We already know that Cost = $150
The revenue will depend on x, the number of necklaces sold, so if each one costs $8, and she sells x of them, the revenue is:
Revenue = $8*x
Then the profit, as a function of x, is:
y = P(x) = $8*x - $150
Where y represents the profit.
Now we want to find the y-intercept of the profit equation, where the y-intercept is the y-value when we use x = 0
Then the y-intercept is:
P(0) = $8*0 - $150 = -$150
Also the graph of the equation can be seen below, where you need to remember that x can be any value in [0, 200] and only can be an integer.
So you only need to graph the line between x = 0 and x = 200.
Answer:
The most appropriate way to state the conclusion is:
d. There is not enough evidence to say that men have a longer mean nose length than women.
Step-by-step explanation:
We have the result of a hypothesis test.
The claim was that men have a longer mean nose length than women.
That means that the alternative hypothesis states that men's mean nose length is higher than the women's mean nose length.
The P-value of the test is 0.225, which for any usual significance level is large enough to fail to reject the null hypothesis. Then, there is no enough evidence to support the claim that men have a longer mean nose length than women.
a. Men have a longer mean nose length than women.
FALSE. There is no enough evidence to support the claim.
b. The probability is 0.225 that men and women have the same mean nose length.
FALSE. That is not the meaning of the P-value.
c. The mean nose lengths of the populations of men and women are identical.
FALSE. We can not claim that the null hypothesis is true, even when we havo no enough evidence to reject it.
d. There is not enough evidence to say that men have a longer mean nose length than women.
TRUE. This is the the most appropriate way to state the conclusion.