SOLUTION: A survey of 200 grade 12 students produced the following data:  101 had a smartphone,  73 had a Ipad,  98 had a laptop,  41 had both a smart phone and an Ipad,  33

Algebra ->  Probability-and-statistics -> SOLUTION: A survey of 200 grade 12 students produced the following data:  101 had a smartphone,  73 had a Ipad,  98 had a laptop,  41 had both a smart phone and an Ipad,  33      Log On


   

Question 1145040: A survey of 200 grade 12 students produced the following data:  101 had a smartphone,  73 had a Ipad,  98 had a laptop,  41 had both a smart phone and an Ipad,  33 had both a Ipad and a laptop, 21 had both a smart phone and a laptop, 12 had all three items.
a) Construct a Venn diagram to determine how many people in the survey had none of the items.
b) What is the probability that a student had:
I) exactly two of the items.
II) Only a laptop
III)A smartphone but not a Ipad
IV) a laptop or an Ipad
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Your data is faulty.

41 had iPad + SmartPhone
33 had iPad + Laptop
12 had all three

So, at an absolute minimum, 86 students had iPad. But your problem statement said 73 students have an iPad. Impossible for the number of students who only have an iPad to be minus 13.

Correct your data and repost. Choose ONE of the questions to ask. One question per post.


John

My calculator said it, I believe it, that settles it