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Author Question: A simple random sample of 5 observations from a population containing 400 elements was taken, and ... (Read 129 times)

azncindy619

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on: Jun 24, 2018
A simple random sample of 5 observations from a population containing 400 elements was taken, and the following values were obtained. 12 18 19 20 21 A point estimate of the population mean is _____.
 a. 5
  b. 18
  c. 19
  d. 20

Question 2

In a large university, 15 of the students are female. If a random sample of 20 students is selected,
 a. what is the probability that the sample contains exactly 4 female students?
  b. what is the probability that the sample will contain no female students?
  c. what is the probability that the sample will contain exactly 20 female students?
  d. what is the probability that the sample will contain more than 9 female students?
  e. what is the probability that the sample will contain fewer than 5 female students?
  f. what is the expected number of female students?


Natalie4ever

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Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. .1821
b. .0388
c. .0000
d. .0002
e. .8298
f. 3


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