People were polled on how many books they read the previous year
People were polled on how many books they read the previous year. How many
subjects are needed to estimate the number of books read the previous year within one book with
90
%
confidence?Initial survey results indicate that
sigma
equals11.1
books.
A
90 %
confidence level requires
nothing
subjects.
(Roundup to the nearest whole number asneeded.)
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