Question

Using sound statistical analysis, a statistician found a high correlation between the amount of broccoli a student eats and student test scores. Can the statistician conclude that eating broccoli raises test scores? Explain. (2 p)

b) Using the range rule, would a 13 year old girl’s height of 67 inches be considered unusually high (significantly high)? Explain.

In a survey of college graduates, 42% said they found employment in a closely related field to their college major. If 6 college graduates are randomly selected, what is the probability that exactly 2 of them found employment in a closely related field to their college major? (4 pts).

In the problem above, what is the probability that if 6 college graduates are randomly selected that at least one found employment in a closely related field to their college major? (4 pts).

Answer 1

Brocolli contains couple of nutrients which help in better functioning of Brain. They are Vitamin K and Choline. So if eating brocolli can help in better performance of Brain which ultimately leads to having a good memory so Getting Good scores can be effect of having Brocolli. So yes they might be Positively correlated. For a statistician to conclude we would require a data.

Usually 13 yeara old girls height will be in range of 140-150 cm which is around 55-60 inch. The average may le around this value. So having 67 inch at 13 years of age will be considered as unsual because the probability of such case will be less than 0.05 so yeah it is unusual.