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MATH302 Quiz 3 attempt 1 | AMU latest update
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MATH302 Quiz 3 attempt 1 | AMU latest update
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It is known that 50% of adult workers have a high school diploma. If a random sample of 6 adult workers
is selected, what is the probability that 3 or more of them have a high school diploma? (That is, find P(X
≤ 3) (round to 4 decimal places) Answer:
3) (round to 4 decimal places) Answer:
___0.6563___
point
If random variable X has a binomial distribution with n=15 and P(success) =p= 0.6, find the mean of X.
That is, find E(X). Round to the whole number. Do not use decimals. Answer:
___9___
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___
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:
___0.1875___
point
If random variable X has a binomial distribution with n =10 and P(success) =p =0.2, find the probability
that X is less than 6. (That is, find P(X<6) Answer: (round to 4 decimal places)
___0.9936___
, point
The table of data obtained from WWW.BASEBALL-ALMANAC.COM shows hit information for four well
known baseball players. Suppose that one hit from the table is randomly selected.
NAME Single Double Triple Home Run TOTAL HITS
Babe Ruth 1,517 506 136 714 2,873
Jackie Robinson 1,054 273 54 137 1,518
Ty Cobb 3,603 174 295 114 4,186
Hank Aaron 2,294 624 98 755 3,771
TOTALS 8,468 1,577 583 1,720 12,351
Find P(hit was a Home Run|The hit was made by Ty Cobb ).
0.027
0.066
0.973
0.009
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point
In the game of roulette, there is a wheel with spaces marked 0 through 36 and a space marked 00. Find
the probability of winning if you pick the number 30 and it comes up on the wheel. Round your answer
to 3 decimal places. Answer:
___0.026___ (0.026, .026)
and on 30 and there are 38 total possibilities.
point
A baseball team has a 20-person roster. A batting order has nine people. How many different batting
orders are there? Answer:
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