PS 3 ni Ahs S. Mepps

Each of X and Y must be either a knight, who always tell the truth, or a liar, who always lies. If X says "At least one of us is a liar", give the identities of X and Y (in that order).

• knight, knight

• knight, liar

• liar, knight

• liar,liar

Which of the following is a qualitative variable?

• civil status

• height

• weight

• temperature

• I and II

• II and III

• II only

• II and IV

What was the average number of Theta competitors per year at the FAMAT State Convention during this period?

• 322

• 335.25

• 340.75

• 364.5

Which of the following terms in best described by the following definition: a locus of points in a plane, where the difference of the distances from any point to the two foci is a constant length?

• Circle

• Ellipse

• Parabola

• Hyperbola

The 50th percentile of a distribution is more commonly known as the:

• IQR

• mean

• median

• mode

• 0

• 1

• 2

• 3

A card is selected randomly from a standard 52 – card deck. What is the probability that it is either a face card or a diamond? Note: Aces are not face cards.

A certain distribution involving insect pheromone levels in a recent study is strongly skewed to the left. Which of the following choices could represent the mean, median, and mode of the data, respectively?

• 11,15,12

• 14,13,11

• 15,14,17

• 12,14,15

Answer explanation

Which of the following is undefined?

• I and II

• II and IV

• III and IV

• I only