Data are drawn from a bell-shaped distribution with a mean of 75 and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 75 and a standard deviation of 5.
Using Chebyshev's theorem, Approximately what percentage of the observations are less than 65?
Homework Answers
Given information:
So,
According to Chebyshev's theorem at least 75% data values lies in the interval (65, 85). That is at most 25% data values lie outside the interval. Since distribution is bell shaped so approximately 25% / 2 = 12.5% of the observations are less than 65.
Answer: 12.5%
Add Answer to:
Data are drawn from a bell-shaped distribution with a mean of 75
and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 130 and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 130 and a standard deviation of 5. There are 1,500 observations in the data set. a. Approximately what percentage of the observations are less than 140? (Round your answer to 1 decimal place.) Percentage of observations b. Approximately how many observations are less than 140? (Round your answer to the nearest whole number.) Number of observations
Data are drawn from a bell-shaped distribution with a mean of 100 and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 100 and a standard deviation of 4. a) Approximately why percentage of the observations fall between 92 and 108? - b) Approximately what percentage of the observations fall between 88 and 112? - c) Approximately what percentage of the observations are less than 96? - I’m having a lot of trouble with these, please explain each problem and show work.
Data are drawn from a bell-shaped distribution with a mean of 80 and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 80 and a standard deviation of 4 a. Approximately what percentage of the observations fall between 72 and 88? (Round your answer to the nearest whole percent.) Percentage of observations b. Approximately what percentage of the observations fall between 68 and 92? (Round your answer to the nearest whole percent.) Percentage of observations c. Approximately what percentage of the observations are less than 76? (Round your answer to 1...
Data are drawn from a bell-shaped distribution with a mean of 95 and a standard deviation...
Data are drawn from a bell-shaped distribution with a mean of 95 and a standard deviation of 6. a. Approximately what percentage of the observations fall between 83 and 107? (Round your answer to the nearest whole percent.) b. Approximately what percentage of the observations fall between 77 and 113? (Round your answer to the nearest whole percent.) c. Approximately what percentage of the observations are less than 83? (Round your answer to 1 decimal place.)
Data with 650 observations are drawn from a bell-shaped distribution with a mean of 90 and...
Data with 650 observations are drawn from a bell-shaped distribution with a mean of 90 and a standard deviation of 6. Approximately how many observations are more than 102? (Round your answer to the nearest whole number.)
ata with 250 observations are drawn from a bell-shaped distribution with a mean of 60 and...
ata with 250 observations are drawn from a bell-shaped distribution with a mean of 60 and a standard deviation of 12. Approximate ow many observations are more than 84? (Round your answer to the nearest whole number) Number of observations
Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard...
Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard deviation of 5 cm. Using Chebyshev's theorem, what do we know about the percentage of women with heights that are within 2 standard deviations of the mean? What are the minimum and maximum heights that are within 2 standard deviations of the mean? At least ___% of women have heights within 2 standard deviations of 161 cm. (Round to the nearest percent as needed.)
Using the accompanying table of data, blood platelet counts of women have a bell-shaped distribution with...
Using the accompanying table of data, blood platelet counts of women have a bell-shaped distribution with a mean of 255.1 and a standard deviation of 65.3. (All units are 1000 cells/muL.) Using Chebyshev's theorem, what is known about the percentage of women with platelet counts that are within 2 standard deviations of the mean? What are the minimum and maximum possible platelet counts that are within 2 standard deviations of the mean?
Consider a bell-shaped symmetric distribution with mean of 128 and standard deviation of 3. Approximately what...
Consider a bell-shaped symmetric distribution with mean of 128 and standard deviation of 3. Approximately what percentage of data lie between 119 and 128? A)68% B)99.7% C)49.85% D)47.5% E)95%
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 10
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 10. Use the empirical rule to determine the following (a) What percentage of people has an IQ score between 70 and 1307 (b) What percentage of people has an IQ score less than 90 or greater than 110? (c) What percentage of people has an IQ score greater than 120?
Data are drawn from a bell-shaped distribution with a mean of 130 and a standard deviation of 5. There are 1,500 observations in the data set. a. Approximately what percentage of the observations are less than 140? (Round your answer to 1 decimal place.) Percentage of observations b. Approximately how many observations are less than 140? (Round your answer to the nearest whole number.) Number of observations
Data are drawn from a bell-shaped distribution with a mean of 80 and a standard deviation of 4 a. Approximately what percentage of the observations fall between 72 and 88? (Round your answer to the nearest whole percent.) Percentage of observations b. Approximately what percentage of the observations fall between 68 and 92? (Round your answer to the nearest whole percent.) Percentage of observations c. Approximately what percentage of the observations are less than 76? (Round your answer to 1...
ata with 250 observations are drawn from a bell-shaped distribution with a mean of 60 and a standard deviation of 12. Approximate ow many observations are more than 84? (Round your answer to the nearest whole number) Number of observations
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago