1) A study finds that during blizzards, online sales are highly associated with

Question

1) A study finds that during blizzards, online sales are highly associated with the number of snow plows on the road; the more plows, the more online purchases. The director of an association of online merchants suggests that the organization should encourage municipalities to send out more plows whenever it snows because, he says, that will increase business. Comment.

2)

Indicate which of the following represent independent events. Explain briefly.

a) Prices of houses on the same block.

b) Successive measurements of your heart rate as you exercise on a treadmill.

c) Measurements of the heart rates of all students in the gym.

Explanation / Answer

1.

It is seen that online purchase increases with number of plows. So the director of the association of online merchants suggested correctly. It will increase online sell. Simultaneously their business will increase.

2.

a) Price of house on the same block are not indeppendent. Because all the houses changes price simultaneously.

b) Successive measurements of your heart rate as you exercise on a treadmill is not independent. All the reading depends on the nature of the heart.

c) Measurements of the heart rates of all students in the gym are independent. Because capability of everyones heart is independent of others. At a time their strain will also be different. So these data are independent.

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