The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.7 and a standard deviation of 60.8. (All units are 1000 cells/uL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 73.3 and 438.1? b. What is the approximate percentage of women with platelet counts between 194.9 and 316.5? a. Approximately % of women in this group have platelet counts within 3 standard deviations of the mean, or between 73.3 and 438.1. (Type an integer or a decimal. Do not round.) b. Approximately % of women in this group have platelet counts between 194.9 and 316.5. (Type an integer or a decimal. Do not round.)

(2) (2) (2) (2) བྱེ བྱ བྱེ བྱེ བྱེ 1.1 1.2 Reamorata is a student at Nelson Mandela Metropolitan University (NMMU) Vista Campus in Port Elizabeth. ANNEXURE A shows a map/plan of the layout of the campus where he attends classes. Use ANNEXURE A to answer the questions that follow. 1.1.1 Identify the type of map/plan used and write it down. 1.1.2 Give one purpose of the building marked as number 15. 1.1.3 Name the province where Port Elizabeth is situated. 1.1.4 What symbol is used to show parking on the campus? 1.1.5 How many lecture halls are shown on the map/plan. In picture 1 and picture 2 two clocks are shown. 10 PICTURE 1 12 112 2 PICTURE 2 9 00 8 4. 765 5:44 LITE Use the information above to answer the questions that follow. 1.2.1 Name the two time formats used to display the time on the clocks. 1.2.2 Write down, in words, the time displayed on the clock in picture 2. 1.2.3 Convert 13 hours 57 minutes to hours. (2) (2) (2)

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If P (A) =0.45, P (B) =0.7, and P (A and B) = 0.4, find P (A or B).