Mrs. McDonald's students have been working very hard during class, completing all class work and homework, and even attending tu
torials after school. The day before the test, a new student was enrolled in the class and Mrs. McDonald had this student take the test to see what they knew. The test scores are listed below. Which of the following would be the best measure of central tendency?
1 answer:
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Answer:
1, ,
.
Step-by-step explanation:
probability =
Total number of persons in the party = n
a) Pr ( every person gets their phone back) = Pr (each person picks his phone ) multiplied by number of person
= × n = 1.
No of first m persons to pick = m
No of last m persons to pick = 1 - m
b) Pr (first m persons to pick each gets their phones back) =
c) Pr( first m persons get a phone belonging to last m persons) =