A student selects his answers on a true/false examination bytossing a coin (so that any particular answer has a .50 probabilityof being correct). He must answer at least 70% correctly in orderto pass. Find his probability of passing when the number ofquestions is(a) 10Pr=(b) 20Pr=(c) 50Pr=(d) 100Pr=

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

Which of the binomials below is a factor of this trinominal? x^2-13+30

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles