Refer to the accompanying scatterplot.

a. examine the pattern of all 1010 points and subjectively determine whether there appears to be a strong correlation between x and y.

b. find the value of the correlation coefficient r and determine whether there is a linear correlation.

c. remove the point with coordinates (1010,22) and find the correlation coefficient r and determine whether there is a linear correlation.

d. what do you conclude about the possible effect from a single pair of values

5.(04.07) two different plants grow each year at different rates, which are represented by the functions f(x) = 4* and g(x) = 5x + 2. what is the first year the f(x) height is greater than the g(x) height? year 3 year 0 year 2 year 1

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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."