Sophia Statistics Unit 2 Milestone questions with correct answers and explanition

Sophia Statistics Unit 2 Milestone Score 22/26 You passed this Milestone 22 questions were answered correctly. 4UquNestiIonTs we2re a—nswerMed inIcLorrEectSly.TONE 2 The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a standard deviation of 4. On a particular day, 52 mobile phones were sold. What is the z-score of the sale of mobile phones on that day? CONCEPT Standard Scores and Z-Scores I need help with this question 2 In a poll of 300 preschoolers, 125 said they preferred chocolate ice cream, 71 said they preferred vanilla, 100 said they preferred cookies & cream, and 4 said they had never eaten ice cream. If a pie chart were to be made showing the preference for each flavor, the central angle for the chocolate ice cream sector would be . CONCEPT Bar Graphs and Pie Charts I need help with this question 3 The first quartile (Q1) value from the above box plot is . Five Number Summary and Boxplots I need help with this question 4 Select the statement that accurately describes unimodal distribution. Shapes of Distribution I need help with this question 5 Choose the statement that correctly describes a normal distribution. Normal Distribution I need help with this question 6 Sara wonders what percentage of her students answered at least half of the quiz questions incorrectly. The relative cumulative frequency of students who earned a score of 20 or lower on the quiz is . Cumulative Frequency I need help with this question 7 Dave drives to work. While driving the car over nine days, he observes his daily average speed and lists it in the table below. Day Average Speed (MPH) 1 45 2 62 3 44 4 70 5 59 6 66 7 54 8 63 9 67 The median speed at which Dave drove to work was . CONCEPT Mean, Median, and Mode I need help with this question 8 Which of the following statements is true? ………………………………………………….CONTINUED…………………………………………………..