The area of the rectangle shown is 2x^2-x-15 square units. What is the width of the rectangle?
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Every point on the original graph will move up 4 units. See the enclosed graph
Legend
Red: y = x^3
Blue: y = x^3 + 4
Green: A vertical line that shows that when x = 1 on the original red graph, x = 5 on the blue.
If ages are normally distributed then using a significance level of 0.05 , we can claim that the population mean is greater than 24.
Given sample mean of 25 years , sample size of 16 ,standard deviation of 2 years.
We have to find whether the population average is greater than 24.
We have to use t test because n is less than 30. It is right tailed.
We have to first form Hypothesis.
:μ>24,
:μ<24.
t=X-μ/S/
t critical at 5% significance level and degree of freedom=15 (16-1)=1.7531
t=24-25/2/
=-1/0.5
=-2
Because 1.7531 is greater than -2 so we will accept the null hypothesis.
Hence we can say that the average of population is greater than 24.
Learn more about t test at brainly.com/question/6589776
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