Don’t know if I got this right or not could u guys help.
2 answers:
Hi!
<h3>Let's check your answer by doing the opposite. </h3>-----------------------------------
<h3>The way to find the area of a rectangle is multiplying the width by height. So you need to multiply </h3>.
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<h3>Convert the mixed numbers to improper fractions by multiplying the whole number by the denominator then adding it to the numerator. The denominator stays the same. </h3>3 * 8 + 1 = 25
6 * 5 + 2 = 32
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<h3>Now solve. </h3>------------------------------------------
<h2>Your answer is correct!</h2>Hope this helps! :)
-Peredhel
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Answer:
f(2) = f(3) = 102 ft
Step-by-step explanation:
The height f at t = 2 seconds is given by:
The height f at t = 3 seconds is given by:
For both t =2 and t =3, the expression results in a height of 102 ft, therefore f(2) = f(3) = 102 ft.
Answer:
If we compare the p value and the significance level given we see that
so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the true mean is different from 4.6 at 2% of signficance.
Step-by-step explanation:
Data given and notation
represent the sample mean
represent the population standard deviation
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
z would represent the statistic (variable of interest)
represent the p value for the test (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the mean is equal or not to 4.6, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:
(1)
z-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 can replace in formula (1) the info given like this:
P-value
Since is a two sided test the p value would be:
Conclusion
If we compare the p value and the significance level given we see that
so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the true mean is different from 4.6 at 2% of signficance.