My best guess is to go with C, sorry if its wrong!
edit: just realized this said red and blue, my bad!
The answer is A, 32.2.
If you follow the equation given, and plug in the numbers under the shape that’ll give you your answer.
Answer:
If we analyze the p value and the significance level given we see that so we have enough evidence to FAIL to reject the null hypothesis. So there is no evidence to conclude that at least one mean of the groups differs significantly from the others.
Step-by-step explanation:
Analysis of variance (ANOVA) is "a statistical technique that is used to check if the means of two or more groups are significantly different from each other. ANOVA checks the impact of one or more factors by comparing the means of different samples".
The null hypothesis on this case would be:
Null hypothesis:
Alternative hypothesis: At least one mean is different from the other's.
We know that we have 3 groups based on the degrees of freedom for the statistic F. Since we know that F=3.51, df=2,18.
The degrees of freedom for the numerator are given by k-1=2, if we solve for k=2+1=3. And k represent the number of groups analyzed.
The degrees of freedom for the denominator are given by N-k=18, since k=3 then N=18+3=21. And that represent the number of total people analyzed.
In order to take a decision respect the null hypothesis we can calculate the p value or the critical value.
If we find the p value we got:
And if we analyze the p value and the significance level given we see that so we have enough evidence to FAIL to reject the null hypothesis. So there is no evidence to conclude that at least one mean of the groups differs significantly from the others.
Whats the problem? you didnt post any pic
Answer:
a. <u>y = $3 + $2.50x,</u>
b. <u>$23</u>
Step-by-step explanation:
y is the total cost of x gallons of gasoline at $2.50/gallon.
a. The total cost of one car wash ($23 each) plus x gallons of gas is:
<u>a. y = $3 + $2.50x</u>
<u></u>
b. The cost of a car wash and 8 gallons (x=8) is:
b. y = $3 + $2.50*(8)
y = $3 + $20
<u>y = $23</u>