DEVRY MATH399 Week 3 Assignment Contingency Tables for Probability Latest 2019 JULY
MATH399 Applied Managerial Statistics
Week 3 Assignment Contingency Tables for
Probability
QuestionUse
the completed contingency table to find the probability that an employee
prefers the bus given that they are a seasoned employee. Express your answer as
a decimal rounded to two decimal places.
QuestionThe
following incomplete contingency table shows a random sample of 120 employees
and the routes they prefer. Complete the table.
QuestionFill
in the following contingency table and find the number of students who both do
not read mysteries AND do not read comics.
StudentsreadmysteriesdonotreadmysteriesTotalreadcomics13donotreadcomics53Total4242
QuestionFill
in the following contingency table and find the number of students who both do
not go to the beach AND do not go to the mountains.
StudentsgotothebeachdonotgotothebeachTotalgotothemountains32donotgotothemountains32Total5427
QuestionFill
in the following contingency table and find the number of students who both
watch comedies AND watch dramas.
StudentswatchcomediesdonotwatchcomediesTotalwatchdramas34donotwatchdramas10Total3967
QuestionComplete
the following contingency table and find the number of students who both do not
play sports AND do not play an instrument.
Students Play an instrument Do not play an instrument Total
Play sports 19
47
Do not play
sports 29
Total 46
QuestionA
group of 150 students in a high school were asked if they prefer texting or
calling.
The
following table shows approximate numbers.
Male Female Total
Texting 22 58 80
Calling 8 62 70
Total 30 120 150
According
to the table, what is the probability that a randomly chosen student prefers
calling, given that they are male? Give your answer as a fraction in simplest
form.
QuestionA
group of 155 seniors at a local university were asked if they took an economics
class and if they had an internship.
The
following table shows the results.
Economics
Class No Economics Class Total
Internship 30 68 98
No
Internship 16 41 57
Total 46 109 155
According
to the table, what is the probability that a randomly chosen senior does not
have an internship given that they took an economics class? Give your answer as
a fraction in simplest form.
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