2. Mark each of the following as TRUE or FALSE: A statistic value can be calcula

Question

2. Mark each of the following as TRUE or FALSE: A statistic value can be calculated from a sample, but a parameter value cannot. A coin is tossed until a Head is obtained. Let x the total number of tosses needed. Then x has a binomial distribution. In a sample of 1000 students in a university, 125 of them or 12.5% are biology majors. The 12.5% is a statistic. In a Venn diagram two events A and Bare not overlapping. This means they are independent. The event Eand its complement E are independent events. As the sample size increases, the variation of the sample mean from the population mean becomes larger and larger. Random pick 10 marbles from a jar contains 30 red, 10 blue marbles without replacement. The number of blue marbles in the sample has a Binomial distribution.

Explanation / Answer

True a parameter can be estimated but not exactly calculated from sample

False. X has a Geometric distribution

True. 12.5 is a statistic

False not overlapping means disjoint but not independent

False they are complementary and mutually exclusive and exhaustive

False

True

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