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MATH 302 Week 3 - Knowledge Quiz - Atempt 3 | LATEST UPDATE
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MATH 302 Week 3 - Knowledge Quiz - Atempt 3
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Attempt 3Written: Jun 27, 2021 3:29 AM - Jun 27, 2021 4:10 AM
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point
It is known that 50% of adult workers have a high school
diploma. If a random sample of 5 adult workers is selected,
what is the probability that more than 3 of them have a high
school diploma? (That is, what is P(X>3) (round to 4 decimal
places) Answer:
___.1875___
edback
point
It is known that 40% of adult workers have a high school
diploma. If a random sample of 10 adult workers is selected,
what is the expected number of adult workers with a high
school diploma? (That is, what is E(X)?) Round to the whole
number. Do not use decimals. Answer:
___4___
edback
point
Approximately 10% of all people are left-handed. If 200 people
are randomly selected, what is the expected number of left-
handed people? Round to the whole number. Do not use
decimals. Answer:
___20___
edback
point
Approximately 8% of all people have blue eyes. Out of a
random sample of 20 people, what is the probability that at
This study source was downloaded by 100000829818949 from CourseHero.com on 04-12-2022 10:21:33 GMT -05:00
https://www.coursehero.com/file/124372010/Week-3-Knowledge-Quiz-Atempt-3docx/
, most 2 of them have blue eyes? Round answer to 4 decimal
places. Answer:
___.2711___ (0.7879, .7879)
edback
point
If random variable X has a binomial distribution with n =10
and P(success) = p =0.6, find the probability that X is more
than 3. (That is, find P(X>3) (round to 4 decimal places)
Answer:
___0.9452___
edback
point
The table shows a random sample of musicians and how they learned to play their
instruments.
Gender Self-Taught Studied in School Private Instruction Total
Female 12 38 22 72
Male 19 24 15 58
Total 31 62 37 130
Find P(musician is a female AND had private instruction).
0.17
0.12
0.88
0.83
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point
This study source was downloaded by 100000829818949 from CourseHero.com on 04-12-2022 10:21:33 GMT -05:00
https://www.coursehero.com/file/124372010/Week-3-Knowledge-Quiz-Atempt-3docx/
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