subject
Mathematics, 23.02.2021 01:00 diggy72

he results of a national survey showed that on average, adults sleep 6.3 hours per night. Suppose that the standard deviation is 1.4 hours. (a) Use Chebyshev's theorem to calculate the minimum percentage of individuals who sleep between 3.5 and 9.1 hours. % (b) Use Chebyshev's theorem to calculate the minimum percentage of individuals who sleep between 2.8 and 9.8 hours. % (c) Assume that the number of hours of sleep follows a bell-shaped distribution. Use the empirical rule to calculate the percentage of individuals who sleep between 3.5 and 9.1 hours per day. % How does this result compare to the value that you obtained using Chebyshev's theorem in part (a)

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 19:10
At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?
Answers: 1
question
Mathematics, 21.06.2019 20:40
What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i
Answers: 2
question
Mathematics, 21.06.2019 23:30
Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.
Answers: 1
question
Mathematics, 22.06.2019 02:30
Given right triangle abc, what is the value of tan(a)?
Answers: 1
You know the right answer?
he results of a national survey showed that on average, adults sleep 6.3 hours per night. Suppose th...
Questions
question
Mathematics, 24.06.2019 07:00
question
Mathematics, 24.06.2019 07:00
Questions on the website: 13722367