Question

Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.33 and a standard deviation of 1.48 . Using the empirical rule, what percentage of American women have shoe sizes that are at least 12.77 ? Please do not round your answer.

Answer #1

Solution :

Given that ,

mean = = 8.33

standard deviation = = 1.48

P(x 12.77) = 1 - P(x 12.77)

= 1 - P((x - ) / (12.77 - 8.33) / 1.48)

= 1 - P(z 3)

= 1 - 0.9987

= 0.0013

Suppose that shoe sizes of American women have a bell-shaped
distribution with a mean of 8.06 and a standard deviation of 1.52.
Using the empirical rule, what percentage of American women have
shoe sizes that are greater than 11.1? Please do not round your
answer.

Suppose that shoe sizes of American women have a bell-shaped
distribution with a mean of 8.4 and a standard deviation of 1.51.
Using the empirical rule, what percentage of American women have
shoe sizes that are between 5.38 and 11.42?

Suppose that shoe sixes of American Women have a bell shaped
distribution of 8.09 and a standard deviation of 1.5. Using the
empirical rule , what percentage of American women have shoe sizes
that are between 6.59 and 9.59

Suppose that IQ scores have a bell-shaped distribution with a
mean of 103 and a standard deviation of 15. Using the empirical
rule, what percentage of IQ scores are at least 133? Please do not
round your answer.

Suppose that IQ scores have a bell-shaped distribution with a
mean of 105 and a standard deviation of 14. Using the empirical
rule, what percentage of IQ scores are at least 77 ? Please do not
round your answer.

Suppose that diameters of a new species of apple have a
bell-shaped distribution with a mean of 7.2cm and a standard
deviation of 0.38cm. Using the empirical rule, what percentage of
the apples have diameters that are at least 7.96cm? Please do not
round your answer.

Suppose that IQ scores have a bell-shaped distribution with a
mean of 98 and a standard deviation of 17. Using the empirical
rule, what percentage of IQ scores are greater than 115? Please do
not round your answer.

Suppose that IQ scores have a bell-shaped distribution with a
mean of 96 and a standard deviation of 12. Using the empirical
rule, what percentage of IQ scores are less than 120? Please do not
round your answer.

Suppose that IQ scores have a bell-shaped distribution with a
mean of 99 99 and a standard deviation of 13 13 . Using the
empirical rule, what percentage of IQ scores are less than 86 86 ?
Please do not round your answer.

Suppose that grade point averages of undergraduate students at
one university have a bell-shaped distribution with a mean of 2.54
and a standard deviation of 0.44. Using the empirical rule, what
percentage of the students have grade point averages that are at
least 2.1? Please do not round your answer

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 7 minutes ago

asked 7 minutes ago

asked 13 minutes ago

asked 13 minutes ago

asked 16 minutes ago

asked 40 minutes ago

asked 44 minutes ago

asked 45 minutes ago

asked 47 minutes ago

asked 47 minutes ago

asked 1 hour ago