The lifespans of 32 tigers in captivity are normally distributed. The average tiger lives 22.4 years; standard deviation is 2.7 years. (a) Use the Empirical Rule to estimate the probability of a tiger living between 25.1 years and 30.5 years. % (Do not write the % sign.) (b) Do not use the Empirical Rule for this question. About how many tigers in the sample live less than 20 years? (Use the graphing calculator. Give answer as a whole number, not a percent.)

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The lifespans of 32 tigers in captivity are normally distributed. The average tiger lives 22.4 years; the
standard deviation is 2.7 years.
(a) Use the Empirical Rule to estimate the probability of a tiger living between 25.1 years and 30.5
years.
% (Do not write the % sign.)
(b) Do not use the Empirical Rule for this question. About how many tigers in the sample live less
than 20 years?
(Use the graphing calculator. Give answer as a whole number, not a percent.)
Transcribed Image Text:The lifespans of 32 tigers in captivity are normally distributed. The average tiger lives 22.4 years; the standard deviation is 2.7 years. (a) Use the Empirical Rule to estimate the probability of a tiger living between 25.1 years and 30.5 years. % (Do not write the % sign.) (b) Do not use the Empirical Rule for this question. About how many tigers in the sample live less than 20 years? (Use the graphing calculator. Give answer as a whole number, not a percent.)
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