If you have 5 apples on 1 branch how many are there on 5 branches?
2 answers:
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Answer:
<h2>a) 15% b) 10.25</h2>Step-by-step explanation:
Probability is the likelihood or chance that an event will occur.
Probability = number of expected outcome/total outcome.
a)Total number of student is the total outcome = 40
Expected number of outcome is the number of students who bought 20 or more books = 6 (number of students who bought 20-24 books)
Probability of those students who bought 20 or more books = 6/40 = 0.15
Expressing as percentage = 0.15 * 100 = 15%
This means that 15% of the total students bought 20 or more books
b) Mean is calculated using the formula
f is the frequency
x is the midpoint of the class interval
N is the total number of students.
Check the attachment for the frequency table.
Mean number of books bought is 10.25
