Solve the following system by graphing x + y - 6= 0 x- y = 0
2 answers:
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Answer:
1.86 < t < 2.31
Step-by-step explanation:
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the mean height actually is higher\lower than an specified value, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
Or like this:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:
(1)
t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
Calculate the statistic
We don't know on this case the calculated value and with the p value we can find it.
P-value
The first step is calculate the degrees of freedom, on this case:
Since is a one side test the p value would be:
And we can find the critical value with the following excel code:
"
=T.INV(1-0.035,8)" and we got
And cannot be a lower tail test since all the options have positive values for the statistic. So on this case the best option is:
1.86 < t < 2.31
Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
<h3>What is a cone?</h3>It is defined as a three-dimensional shape in which the base is a circular shape and the diameter of the circle decreases as we move from the circular base to the vertex.
Isabella equation:
The area of the base = 12π square cm
Thus, Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
Learn more about the cone here:
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