Question

goo - Yahoo Search Results Home MyEOLINC Central Univ X Take Test: Final Exam-DSC 2010 X + /webapps/assessment/take/launch.jsp?course_assessment_id-_207106_18_course_id-_2775056_1&content id=_3355736 1&step=null Remaining Time: 1 hour, 13 minutes, 53 seconds. Question Completion Status: The Nationwide Motor Company has determined that 70 percent of all calls for motel reservations request non smoking rooms Recently, the customer service manager for the company randomly selected 25 calls. Assuming that the distribution of calls requesting nonsmoking rooms is described by a binomial distribution, the standard deviation of requests for nonsmoking rooms is 5 25 customers True False QUESTION 18 The Good Guys Car Dealership has tracked the number of used cars sold at its downtown dealership Consider the following data as representing the population of cars sold in each of the 8 weeks that the dealership has been open 3 5 9 0 The population variance is approximately 9 43 True False QUESTION 10 When using the Histogram tool in Excel to construct a frequency distribution and histogram, the bins represent the upper class limits True False Click Save and submit to save and submit. Click Save all to save allantes Save All Answers
18&19 please

Answer 1

18.

Using Excel command,

"=var(x)"

We get variance as 9.428571

So, answer is "true"

19.

Since, bin is nothing but the class intervals, it shows both upper and lower limits

Hence, answer is "false"