Let x represent the number of players on a sports field. This would be considere

Question

Let x represent the number of players on a sports field. This would be considered what type of variable:

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Question 32 pts

Consider the following table.

If you created the probability distribution for these data, what would be the probability of 18-29?

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Question 42 pts

Consider the following table.

Find the mean of this variable.

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Question 52 pts

Consider the following table.

Find the variance of this variable.

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Question 62 pts

Consider the following table.

Find the standard deviation of this variable.

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Question 72 pts

The standard deviation of the number of video game A’s outcomes is 1.8940, while the standard deviation of the number of video game B’s outcomes is 1.6179. Which game would you be likely to choose if you wanted players to have the most choice and why?

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Question 82 pts

Fifteen golfers are randomly selected. The random variable represents the number of golfers who only play on the weekends. For this to be a binomial experiment, what assumption needs to be made?

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Question 92 pts

A survey found that 31% of all teens buy soda (pop) at least once each week. Seven teens are randomly selected. The random variable represents the number of teens who buy soda (pop) at least once each week. What is the value of n?

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Question 102 pts

Fifty-nine percent of US adults have little confidence in their cars. You randomly select eight US adults. Find the probability that the number of US adults who have little confidence in their cars is (1) exactly three and then find the probability that it is (2) more than 6.

Continuous

Explanation / Answer

Q 1) Let x represent the number of players on a sports field. This would be considered what type of variable:

Answer: Discrete because X represents the contable number of players on a sports field.

Q 32) The Frequency distribution table is

P(18-29) = (9831/41557)*100 = 23.7%

Answer: 23.7%

Age Group Frequency 18-29 9831 30-39 7845 40-49 6869 50-59 6323 60-69 5410 70 and over 5279 Total 41557

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