5

D Drop downs are 1 - 0.59 , 0.55 , 0.572 - Casts , does not cast 3 - between 0.05 and 0.95 , less than 0.05 ,grater then 0.954 - significantly large , not signif...

Question

D Drop downs are 1 - 0.59 , 0.55 , 0.572 - Casts , does not cast 3 - between 0.05 and 0.95 , less than 0.05 ,grater then 0.954 - significantly large , not significantly small orlarge , significantly small

D Drop downs are 1 - 0.59 , 0.55 , 0.57 2 - Casts , does not cast 3 - between 0.05 and 0.95 , less than 0.05 , grater then 0.95 4 - significantly large , not significantly small or large , significantly small



Answers

If we leave out the low outlier, the correlation for the remaining 13 points in the figure above is closest to
$$
\begin{array}{ll}{\text { (a) }-0.95} & {\text { (c) 0. (e) } 0.95}\end{array}
$$
$$
\quad \text { (b) }-0.5 . \quad \text { (d) } 0.5
$$

When you divide 9.5 45 by 10 the number will be smaller then what it originally is because it will shift the decimal to the right. When you divide 9.545 by 0.1, the answer will be greater as you shift the decibel to the right.

10. Choosing a smaller level of significance. That is a smaller alpha. RISC results in. We have a few different options here. So we're just going to say low alpha, what does that represent? Well, let's go through the choices a a lower risk of Type two error and low power or a lower risk of tattoo error. In high power. A higher risk of type two error and low power. Higher risk of type two error. And higher power. And no change in type two error or empower. So all the choices are referring to two errors and power. First thing on addresses power. So if we want to increase power, we could increase alpha. Therefore, if you want to decrease power we could decrease alpha. So because alpha has been decreased, we know for sure that power is being decreased. Okay, so that eliminates a few of our options here. That eliminates B, D and E. So we're left with either A or C. And it comes down to type two error. Or do we have a higher risk of type two error? Or do we have a lower risk of a type two error? So a type two error is when you failed to reject H. O. So if we're lowering Alpha, we're making it harder for ourselves too reject. Which is making it easiest to fail to reject. So what we're doing here is we're increasing our chances of a type two Air because we are making it harder to reject, which is making it easier to fail to reject. So it can't be option A. Which says we lower the chance of a type one Air. So we're going with option C. We increase the chance of a type two error and we also decrease the power in this case. So empowers the probability of a type two error is not committed anyways. So a higher type two error results in a lower power.

Again. This is an extension of the last question. This time we have 26 girls out of 50. It is quite possible to get 26 girls out of 50 right? 26 is what? How many? How much percent is 26 12 fifties one, This is 5.2. So this is 52%. 52%. This quite reasonable. So this is neither high nor low. So this is neither of them. This is neither of them.

So in this problem we're being asked to simplify the given expression, notice that there's a minus side in between these two Paulino meals. So we're being asked to track the tooth together Well in order to do that first we have to remove all the prophecies. No this there's nothing in front of the first set of parentheses. So the first three terms will stay the same. 0.5 C. To the third B plus 0.2 C squared B squared -0.09 CB to the 3rd. Now because there's a minus sign in front of the second set of parentheses, we have to change the signs of the three terms in that second polynomial. So that first term will become positive 0.3 C. To the third B. The second term will be negative 0.8 C squared B squared. And the last term will be plus 0.1 CB to the third. Now we just need to combine like terms first. I'll combine the C. To the third be terms. So we have 0.52, C. To the third, B plus 0.3, C. To the third. P. Well 0.5 plus C. To the third. Or sorry plus 0.3 is equal to 0.0 weight. So of 0.8 C. To the third. Beat next I'll combine the C squared B turn V squared terms. So we have 0.2 and we have the negative 0.0 weight. Well 0.0 to minus 0.8 is negative 0.6. And we'll bring down our C squared B squared. Lastly we have our CB to the third terms. So we have negative 0.09 plus 0.1. Well negative 0.9 plus 0.1 is equal to positive 0.1. So our last term will be plus 0.1 CB to the third. So now that will combine are like terms we can. Now we now have our final simplified answer.


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