Questions from Statistics


Q: Fill in the blank: If r = 0.900,

Fill in the blank: If r = 0.900, then ___% of the variation in the response variable y can be explained by the linear relationship between x and y as described by the best-fit line.

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Q: No one can succeed in selling a product that will kill thousands

No one can succeed in selling a product that will kill thousands of people per year.

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Q: Because the numbers 5, 17, 18, 27, 36

Because the numbers 5, 17, 18, 27, 36, and 41 were drawn in the last lottery, you should not bet on them in the next lottery because they are now less likely to be drawn.

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Q: The probability of flipping a coin and getting heads is 1/

The probability of flipping a coin and getting heads is 1/2. The probability of rolling a die and getting a 2 is 1/6. When flipping a coin and rolling a die at the same time, the probability of gettin...

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Q: The probability of rolling a die and getting an even number is

The probability of rolling a die and getting an even number is 1/2, and the probability of getting an odd number is 1/2, so the probability of getting a number that is even or odd is 1/2 + 1/2 = 1.

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Q: The probability of your winning your state’s lottery this week is not

The probability of your winning your state’s lottery this week is not affected by whether you won that same lottery last week.

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Q: Assume that boys and girls are equally likely and that the gender

Assume that boys and girls are equally likely and that the gender of a child is independent of the gender of any brothers or sisters. If a couple already has three girls, find the probability of getti...

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Q: A couple plans to have four children. Find the probability that

A couple plans to have four children. Find the probability that the first three children are girls and the last child is a boy.

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Q: A programmer is instructed to create a password consisting of two different

A programmer is instructed to create a password consisting of two different digits. What is the probability that the password is 12?

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Q: A study of hunting injuries and the wearing of hunter orange clothing

A study of hunting injuries and the wearing of hunter orange clothing showed that among 123 hunters injured when mistaken for game, 6 were wearing orange (based on data from the Centers for Disease Co...

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