5 questions.

Question 2 {1.5 points) we Question 4 {2 points} led It has been reported that 48% of teenagers play video games on their phones. A random sample of 60 teenages is At 3 certain \"Militi- 43 5" nfthe audience was under 20 V33\" \"'d- A random sample \"f '7 = 129 members "f \"\"3 drawn. Find the probability that the proportion of teenagers in the sample who play videos games on their phone is less audience was selected. Find the Value of #5. the mean of the distribution of sampie proportions. than 0.495 _ Wrtie only a number as your answer. no not write as a percentage. Your Answgr: Write only a number as your answer. Round to 4 decimal places (for example 0.3748). Do not write as a percentage. Your Answer Answer i _ Answer I Save i I Save i Question 3 {1.5 points) Question 5 {2 points) Ei According to one pollster, 45 % of people are afraid of ying. Suppose that a sampie of size 24 is drawn. Find the value uf a,- ,the standard deviation cf the distbutiun of sample uronortidm- 74% of freshmen entering pubiic high schools in 2006 graduated with their class in 2010. A random sampie uf 81 freshmen is selected. Find the probability that the proportion of students who graduated is greater than 0.748 . Write only a number as your answer. Round to two decimal piaces (for example: 8.21). Write onl a number as our answer. Round to 4 deLimaI lanes for exam le 0.1048 . Do not write as a ercenla e. Your Answer: y y D ( D J p 9 Question 6 {2 points) lini At a certain university, 5D% of all entering freshmen planned to major in a STEM (science, teehnoiogy, engineen'ng. mathematits) discipline. A sample of 36 freshmen is seiected. What is the probability that the proportion offreshmen in the sample is between 0.485 and 0.5807 Annwnr Write only a number as your answer. Round to 4 decimal places (for example 0.3748). Do not write as a percentage. Your