Answer: 50% chance that a randomly chosen student will be a boy
Answer for 13: 89 percent because 89/100 is .89 or 89 percent
Answer for 14: part a: 1/10 because Each person gets ten percent so 10 times 10 is 100
Part b: it can be expressed as 0.10 in decimal form

x is income in a given month = 930
u is average income = 900
SD is standard deviatio = 15
so z= (930-900) /15 =30/15 =2
answer 2
Answer:
ok your answer is y=>x+1 you are welcome :)
Step-by-step explanation: