Which of the following distributions are guaranteed to be symmetrical? A) geometric B) binomial C) Z What distribution is guaranteed to have negative infinity as part of the sample space? A) geometric B) binomial C)uniform D)norma

Describe the key difference between a binomial and a geometric distribution. a) binomial distribution has dependent trials; geometric distribution has independent trials O b) geometric distribution involves counting successes; binomial distribution involves waiting until success occurs Oa binomial distribution involves counting successes; geometric distribution c) involves waiting until success occurs O d) binomial distribution has independent trials; geometric distribution has d) dependent trials 国 SAMSUNG

question 9

question 8

Three randomly selected households are surveyed. The numbers of people in the households are 2 ​, 7 ​, and 12 . Assume that samples of size nequals 2 are randomly selected with replacement from the population of 2 ​, 7 ​, and 12 . Construct a probability distribution table that describes the sampling distribution of the proportion of even   numbers when samples of sizes nequals 2 are randomly selected. Does the mean of the sample proportions equal the proportion of even   numbers in the​ population? Do the sample proportions target the value of the population​ proportion? Does the sample proportion make a good estimator of the population​ proportion? Listed below are the nine possible samples.   2 ​,2     2 ​,7     2 ​,12     7 ​,2     7 ​,7     7 ​,12     12 ​,2     12 ​,7     12 ​,12

When the population is not normally distributed, the sampling distribution of the mean approximates which of the following? A) A slight positive skew B)A normal distribution C)A normal distribution given a large enough sample D)A distribution that is not normal

Multiple choice