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Statistics grades: In a statistics class of 31 students, there were 15 men and 16 women. Six of the men and seven of the women received an A in the course. A student is chosen at random from the class. (a) Find the probability that the student is a woman. (b) Find the probability that the student received an A. (c) Find the probability that the student is a woman or received an A. (d) Find the probability that the student did not receive an A.

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

A random sample of 337 college students was asked whether or not they were registered to vote. We wonder if there is an association between a student's sex and whether the student is registered to vote. The data are provided in the tables below (expected counts are in parantheses) (All the conditions are satisfied-don't worry about checking them).

Write appropriate hypotheses:

(a) Mean of the registered Men equals the mean of the registered registered women.

Mean of the registered Men differs from the mean of the registered women.

(b) student's sex is independent of whether the student is registered to vote.

  student's sex is not independent of whether the student is registered to vote.

(c) There is no linear correlation between sex and whether a student is registered to vote

There is linear correlation between sex and whether a student is registered to vote

(d) Let d= Registerd-Note Registered

The mean difference in registered is zero.

The mean difference in registered is less than zero.

(e)  

 

 

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b) The student did equally well in each course

c) Calculus

d) Chemistry

e) None of the above

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