Information Flag question Next 2 questions are based on this information: The U.S. national average door-to-doctor wait time for patients to see a doctor is 21.3 minutes. Suppose that such wait times are normally distributed with a standard deviation of 6.7 minutes Question 7 Not yet answered Denote the random variable in this problem by X. What is X? Select one: Points out of 1,00 a. 6.7 minutes Flag acestion b. Door-to-doctor wait times e between 6.7 and 21.3 minutes d. 21.3 minutes estion 8 wered Unfortunately, some patients will have to wait much longer than the mean to see the doctor. In the current problem, 1% of patients have to wait at least --------- minutes to see a doctor. Your answer must be rounded to 1 decimal point and please do not add the word "minutes". If you add "minutes", it will be graded wrong even if it may be correct nts out of Bag stion Answer: Question 9 Not yet answered Points out of 100 A recent report stated "Based on a sample of 250 truck drivers, there is evidence to indicate that, an average all independent truck drivers earn more than company-hired truck drivers. This statement is an example of Select one: a. Selection blas b. Inferential statistics c. Non-response bias d. Descriptive statistics Flag question Question 10 Not yet answered Points out of 100 Statistical analysis of yearly salary of faculty in a community college indicates two modes, that is, mode 1 = $35,000 and mode 2 = $85,000. This could also mean that Select one: a. The salary data is bimodal b. The salary data is unimodal c. Salaries in this community college are homogenous d. The salary data must be positively skewed Flag question Question 11 Answer saved Points out of 100 Suppose that salary data distribution of employees in a company resembles normal. Hence the requirement for the Empirical rule is met. The average salary and standard deviation are 75,000 dollars and 5,000 dollars, respectively. Four employees: A, B, C and D are paid $95,000, $65,000, $55,000 and $85,000, respectively. Which statement is correct? Flag question Select one: a. The salary of employee D can be considered as an outlier b. The salary of employee B can be considered as an outlier c. The salary of employee cannot be consider as an outlier d. The salary of employee A can be considered as an outlier Clear my choice Question 12 Not yet answered Points out of 100 Flag Question Consider two cities A and B. In city A, the average price of single family houses is 200,000 dollars with a standard deviation of 25, 000 dollars. In city, the average price of single family houses is 500,000 dollars with a standard deviation of 50.000 dollars Which statement is correct? Select one: a. City B has a less variable price distribution b. City Bhas a coefficient of variation of 50,000 dollars c. City A has a coefficient of variation of 10% d. City A has a lower standard deviation and hence its price distribution is less variable