B-True [False 120 points- 2 points each) 1-Variables which take on values only at certain points over a given interval are called continuous random variables Ans: 2- The amount of time a patient waits in a doctor's office is an example of a continuous random variable Ans: 3- The mean or the expected value of a discrete distribution is the long-run average of the occurrences. Ans: 4- In a binomial experiment, any single trial contains only two possible outcomes and successive trials are independent. Ans: 5- Normal distribution is a symmetrical distribution with its tails extending to infinity on either side of the mean. Ans: 6lf every unit of the population has the same probability of being selected to the sample, then the researcher is probably conducting random sampling. Ans: 7- A sampling distribution is the distribution of a sample statistic such as the sample mean or sample proportion. Ans: 8 The central limit theorem states that if the sample size, n, is large enough ( n220), the distribution of the sample means is normally distributed regardless of the shape of the population. Ans: 9- The mean of the sample means is the same as the mean of the population Ans: 10- When a statistic calculated from sample data is used to estimate a population parameter, it is called a point estimate. Ans