Question

1) Find the percentage of data within 2 sample standard deviations from the mean: (12,14,67,46,35,84,67,85,93,104 2) Find the sample mean and the sample standard deviation, and determine the skew of the data set: 01112355689 1133466899 2122556788999 3133888 3) An extreme outlier is defined to be any value outside of 3 standard deviations from the mean. Does the following data have any extreme outliers? (4,33,45,75,27,66,101,151,133,279) 4) Suppose that a data set has the following 5-number summary: min 0, Qi 5, Med=5,Q3=5,max =10.What is the skew of the data set? What is the mode? 5) If a class consists of 15 men and 15 women, what is the probability of randomly selecting 5 students, the majority of whom are women? 6) If the probability that you have a bad day is 4%, while the probability that a complete stranger has a bad day is 11%, what is the probability that both of you have a bad day on the same day? 7) What is the probability of winning 1st place in a 6/38 lottery? [Every ticket consists of 6 distinct numbers from 1 to 38.1 8) If you roll two six-sided dice at once, what is the probability of rolling a sum of 9? 9) If you take a 20 question a,b,c,d multiple choice test, what is the probability of getting a 95% or higher, given that you are purely guessing? 10) Given a regular 52-card deck, what is the probability of getting a 5- card hand with an ace and 4 kings?

Answer 1

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