The grades on an exam are 82, 68, 93, 84, 79, 80, 36, 71, 63, 91, 67, 68, 96, 84, 77, 83, 89, 80, 86, 44, 73, 72 ,45, 75, 71, 68, 54, 59, 99, 60, 63 ,55, 87, 97, 95 ,67 (a) What is the range of this data set? (b) Draw a histogram with the first class interval of 30-39. (c) Identify the five number summary. (d) Find the mean and standard deviation. e) Find IQR

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Select the correct answer what is the 10th term of the geometric sequence 3,6, 12, 24,48 a. 512 b. 3,072 c. 768 d. 1,536