8-12 please and thank you! options for 11) (decrease, increase) options for 12)

Question

8-12 please and thank you!

options for 11) (decrease, increase)

options for 12) (larger, smaller)

A positive value for a correlation Indicates: high values on X tend to be associated with low values on Y. high values on X tend to be associated with high values on Y. a much weaker relationship than if the correlation was negative. a much stronger relationship than if the correlation was negative. Assuming all else is equal, a relationship with a correlation of r = -42 will produce more accurate predictions than a relationship with a correlation of r += .29. True or false? A research study found that teenagers with higher numbers of friends and acquaintances also tended to engage in more delinquent acts. The correlation between number of friends and delinquent acts is positive. near -1 negative. near +1. near zero. All other conditions being equal, does a larger sample size increase or decrease the corresponding magnitude of the z or t value of the sample test statistic? All other conditions being equal, does a z or t value with larger magnitude have a larger or smaller corresponding P-value?

Explanation / Answer

Solution8:

It's answer is B.which means if we increase x by 1 unit that y value also increase with 1 unit.

Solution9: it is true because it is near by -1 which means both variables are low correlated with each other.

Solution 10: it's answer is D i.e. Near +1

Because as teenager have more friends they will engage in more disinquint facts.

Solution 11:

It will increase z or t value

Z is directly proportional to square root of sample size.

Solution 12:

It is larger.

If z value is large than P-value also be large.

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