State whether you think the two variables are dependent or independent. Explain your reasoning. a) being a college professor and being female b) being a college graduate and being female

How are r and r squared interpreted?

What is i ? Explain.

Is x and y independent?

Determine whether the outcome is a Type I error, a Type II error, or a correct decision. A test is made of H: = 35 versus H :u+35. The true value of u is 40, and H, is not rejected. The outcome of the test is a (Choose one) Type I error correct decision Type II error

An administrative assistant is working to improve typing speed. The table models the number of words typed, y, after a given number of minutes, x. Which type of model would best fit the data, why?

Let ủ = and 7 =. Now, w a linear combination of u and v. That is, w = a₁ + a₂. Determine a₁ and a₂. a1= a2=

An amateur golfer wishes to determine if there is a difference between the drive distances of her two favorite drivers. (A driver is a specialized club for driving the golf ball down range.) She hits fourteen balls with driver A and 10 balls with driver B. The drive distances (in yards) for the trials are show below. Driver A 265   278   299   314   243   248   275  276  265  266  277  248  276  282Driver B 233   220   217   239   235   245   261   194   272   233Assume that the populations are approximately normal. Can you conclude that there is a difference in the mean drive distances for the two drivers? Use the α = 0.05 level of significance. Use 6-step p-value method.

Name and describe three human activities that affect the environment.

Answer the following questions: a) Explain the difference between the word seeing and the word doing. b) Describe a case where there are two variables that we might call X and Y such that Pr(Y = y | X = x) ≠ Pr(Y = y | do(X = x)). c) Explain the relationship between part a and part b.