Question: The stem and leaf plot shows the number of chocolates with the students of a class. How many data values are there in all in both the intervals 20 to 29 and 40 to 49? Steps to derive 1 The ordered data given in the above stem and leaf plot is 12, 15, 15, 16, 16, 17, 18, 20, 20, 20, 20, 22, 25, 26, 30, 31, 31, 31, 33, 35, 35, 38, 48, 48 and 49.2 The number of data values in the interval 20 to 29 is 7 and the number of data values in the interval 40 to 49 is 3.3 So, the total values in the intervals 20 to 29 and 40 to 49 = 7 + 3 = 10Hence the right answer is Option C Click Here To Go Back Evaluate the function (f + 7)(- 7) when f(x) = ex... Use f(x) = sin x to approximate the value of sin (3.14). [Take π = 3.1415926].. Find the slope of the curve y = 98x at x = 4... Use f(x) = Tan- 1 x to approximate the value of Tan- 1 (1.09). [Take π = 3.1415926].. Write the intercepts of the line shown in the graph... 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