Math Question (4 Questions)?

1.) A football team has a 60% chance of winning when it doesn't snow but only a 40% chance of winning if it does snow. Suppose there is a 60% chance of snow. WHAT IS THE PROBABILITY THAT THE TEAM WILL WIN?





2.) The senior class is 62% female. 35% of the females play a competitive sport. FIND THE PROBABILITY THAT A STUDENT PLAYS A COMPETITIVE SPORT, GIVEN THE STUDENT IS FEMALE?





3.) The daily power usage for 6 days in June were: 51.8, 53.6, 54.7, 50.9, 55.2, and 51.1. FIND THE STANDARD DEVIATION FOR THESE DATA. WHICH DATA FALL WITHIN STANDARD DEVIATION FROM THE MEAN?





4.) Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 240 students, HOW MANY STUDENTS SCORE ABOVE 96?

Math Question (4 Questions)?
1)u can try draw a tree diagram.


1/2 snow,1/2 doesnt snow


probability=(1/2)(3/5)


=0.3


2)let B=62%female


A= 35% females play a competitive sport


P(A Given B)/P(B)


=females n play competitive sport


=0.35/0.62


=0.565





3)u can reference to ur book





4)P(X%26gt;96)=P(Z%26gt;96-76/10)


=P(Z%26gt;2)


=0.9772


=0.9772 X240


=235