Answer:
42 = x
Step-by-step explanation:
4 = x - 38 4 = x - 38
+38 +38 or 38 + 4 = 42
42 = x plug in 42 into the equation to make it true
4 = 42 - 38
Answer:
514
Step-by-step explanation:
To check whether there is a reason to believe that the average height has been changed, we can check one right-tailed test and establish null and alternate hypotheses.
H₀ (null hypothesis): μ = 162.5
H₁ (alternate hypothesis): μ > 162.5
Since we have two samples to compare, we can use the formula below to compute for the z-score.
where Z is the z-score, Χ is the new mean of the sample, μ is the expected average value, δ is the standard deviation, and n is the sample size. Given the values we have,
Assuming that the significance level, α, is 0.05. Now that we have a z-score of 2.77, we can use the z-table to find its p-value. Thus, we have P(Z > 2.77) = .0028. Thus since our p-value is less than α, H₀ is rejected. That means that the average height of the female freshman students has changed.
Answer:
6/18 15/45 30/90, 100/300, 200/600
You can find this by taking the unit rate, 1/3, and multiplying the 3 by x amount of times to get to your next bottom number, then multiply the top number by the same amount of numbers. And the same way vise versa when you only have the top number
Answer:
It is stretch.
I hope it helps a little bit.