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Statistics Quiz

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- Question 1 of 11
##### 1. Question

1 pointsAirway (a Midwestern department store chain) and corvette (an eastern department store chain) are determining whether to expand their geographical bases. The only viable manner by which expansion might be carries out is for chain to open stores in the other’s area. If neither chain expands, then airways profits will be $3 million and corvettes will be $2 million. If airways expand and corvette does not, then airways profits will be $ 5 million and corvette will lose $2 million. If airways do not expand and corvette does, Airway will lose $1 million, and corvette will earn $4 million. Finally if chains expand, Airway will earn $1 million and corvette will earn $500000 in profits determine the equilibrium point, if any for this game. Find the equilibrium point.

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##### 2. Question

1 pointsA card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:

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##### 3. Question

1 pointsA bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

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##### 4. Question

1 pointsSuppose that the proportion of statistics students who are sophomores is 25%. We take a random sample of 12 statistics students. Find the probability that the sample contains exactly 3 sophomores.

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##### 5. Question

1 pointsA soft ball league has 13 teams, if every team must play with an every other team, once in the first round of league play, how many games must be scheduled?

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##### 6. Question

1 pointsA survey of 1000 college seniors yielded the following information: 396 seniors favoured capital punishment, 531 favoured stricter gun control and 237 favoured both. How many favoured capital punishment but not stricter gun control?

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##### 7. Question

1 pointsIf the distribution of the data is right skewed, what is the relationship between mean, median and mode?

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##### 8. Question

1 pointsFind the mean, median and mode for the following data:

25, 50, 100, 50, 22, 10, 55

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##### 9. Question

1 pointsThe value of correlation r lies in the range:

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##### 10. Question

1 pointsIdentify the intercept and slope of the following regression equation: y = 20.5 + 0.44x

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##### 11. Question

10 pointsWrite 100 words about statistics in general.

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