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Chapter 5: Q 5.30. (page 202)
The probability is 0.314 that the gestation period of a woman will exceed 9 months. In 4000 human gestation periods, roughly how many will exceed 9 months?
1256 cases will exceed 9 months in 4000 human gestation periods.
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Horse Racing.Refer to the image below and for each of the following events, list the outcomes that constitute the events and describe the event in words.
In probability and statistics, what is each repetition of an experiment called?
In Exercises 5.16-5.26, express your probability answers as a decimal rounded to three places.
Nobel Laureates. From Wikipedia and the article "Which Country Has the Best Brains?" from BBC News Magazine, we obtained a frequency distribution of the number of Nobel Prize winners. by country.
Suppose that a recipient of a Nobel Prize is selected at random. Find the probability that the Nobel Laureate is from
(a) Sweden.
(b) either France or Germany.
(c) any country other than the United States.
In Exercises 5.16-5.26, express your probability answers as a decimal rounded to three places.
Graduate Science Students. According to Survey of Graduate Science Engineering Students and Postdoctorates, published by the U.S. National Science Foundation, the distribution of graduate science students in doctorate-granting institutions is as follows.
Frequencies are in thousands. Note: Earth sciences include atmospheric and ocean sciences as well.
A graduate science student who is attending a doctorate-granting institution is selected at random. Determine the probability that the field of the student obtained is
(a) psychology.
(b) physical or social science.
(c) not computer science.
Die and coin. Consider the following random experiment : First , roll a die and observe the number of dots facing up: then toss a coin the number of times that the die shows and observe the total number of heads. Thus , if the die shows three dots facing up and the coin (which is then tossed tree times) comes up heads exactly twice, then the outcome of the experiment can be represent as (3,2).
Part (a) Determine a sample space for this experiment.
Part (b) Determine the events that the total number of heads is even.
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