Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the number of pairs of sneakers owned. The results are as follows. X Frequency
1 2
2 4
3 7
4 13
5 13
6 1
Find the sample mean x. (Round your answer to two decimal places.)
Find the sample standard deviation, s. (Round your answer to two decimal places.)
Complete the columns of the chart. (Round your answers to three decimal places.)
X Frequency Relative Frequency Cumulative Relative Frequency
1 2
2 4
3 7
4 13
5 13
6 1
Find the first quartile.
Find the median.
Find the third quartile.
What percent of the students owned at least five pairs? (Round your answer to one decimal place.) %
Find the 40th percentile.
Find the 90th percentile.

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

What are different types of statistical programs