Qustlon 4 3 points Save Answer Known for their grand design and impeccable aesthetic, UQ's lecture theatres are well appreciated by their students. In fact, some lecture theatres even have sound systems with high quality sound opposed to standard sound. However, the high quality sound systems face issues and sometimes do not work faultlessly. In fact, it is known that these high quality sound systems work faultlessly 77% of the time each week. A random sample of 10 lecture theatres with high quality sound is selected and monitored over the week. What is the probability that these lecture theatres work faultlessl more than seven times? (3 decimal places) A1 fx Accommodation satisfaction A B C D E F Accommodation satisfaction Hosts Location Amenities Food 56 7 24 23 63 65 24 74 58 56 12 22 78 68 54 43 21 71 34 86 AO A NO W J O O UI - N JOIN NJWO 68 36 V - - A O U - W OR ON N A O W J NOOO ! WO NOO - A VOI W - CONUNA 98 58 74 63 51 84 36 38 59 46 76 77 55 31 32 O 69 89Question 5 2 points Save Answel Open the data file DF2.1'I C (found in the LBRT #1 folder where you accessed this quiz). Using the column headed "Hosts" to determine the value (as a whole number i.e. use no decimal places) for each of the following: maximum standard deviation c 9 median A number of customer purchase records was sampled by a supermarket chain to study if certain food products and certain types of beverages are often purchased together, so that they can design more combo promotions. The table below presents the number of purchase receipts that include at least one item of that food product or beverage. Firstly, calculate the missing values. wakeWWW Wu'\\/ 1 40 719 WWaos 1 93 :l LrotaIsssvE 1714 Now, using the completed contingency table, select the statements from the following list that are true. Note: a statement is true only if the value you calculated from the completed contingency table, when rounded to the same number of decimal places as in the statement, is the same as the value in the statement. 30.7% of the customers purchased Mountain Dew. Based on the sample, the probability that a customer bought both Pepsi coke and Dorito chips was 20.9%. 28.9% of the customers in the sunrey either bought Pepsi coke or Roasted chicken. Given a customer has bought Dorito chips, the likelihood that he/she also bought Mountain Dew was 12.9%. The selection of these food products and the selection of beverages are independent decisions. (Note: in the equality equation used to conduct the test for independence. vou must compare two values that are both rounded to the nearest whole percentage.)