Question

Identily the distribulion as symmetric, leff-skewed, or rightkewed. 21) Exam scores for an exam in which most students did very well but a few students failed A) Right-skewed 21) B) Left-skewed C) Symmetric 5 22) Lengths of human pregnancies I 22) A) Left-skewed B) Symmetric C) Right-skewed Find the range for the given data. 23) The amount that Jeremy has saved in each of the last six months is shown below 23) $115 $555 $201 $653 $381 $304 A) $103 B) $538 C) $555 D) $115 Find the standard deviation for the given data. Round your answer to one more decimal place than the original data 24) The manager of an electrical supply store measured the diameters of the rolls of wire in the inventory. The diameters of the rolls (in m) are listed below 0.373 0502 0.321 0212 0.594 0.67 0.638 A) 0.212 24) B) 1.7479 C) 15652 D) 0.1745 Solve the problem. 25) The following data set is the GPA's of the students in a statistics class. 1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 275, 275 2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 345, 3.69 25) What value is the 25th percentile? A) 2.12 C) 3.12 B) 1.99 D) None of the above

Answer 1

- (2) ® left skened ® Symmetric range = man - min = - 653 - 115 $538 - (24) Answer is h $538 Based on girn data T = EXi = 3.31 - 0.4228 standard or = {(xi-tj2 = 0 . 1827 n-l 0.1745 Ansuur is 0.1745 6 25th percentile = (nagth the sh Answer = 2.12 Answer is A 2.12 ✓