
The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm...
The mean of a set of data that follows a "bell-shaped" distribution is 236 grams. The standard deviation is 11 grams. Approximately 95% of the data values are within _________ grams of the mean.
A distribution of numbers is approximately bell-shaped. If the
mean of the numbers is 129 and the standard deviation is 15,
a. between what two numbers would approximately
68% of the values fall?
between
_____ and ______
b. Between what two numbers would 95% of the
values fall?
between
_____ and _______
c. Between what two values would 99.7% of the
values fall?
between
______ and ______
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%
If a variable has a distribution that is bell-shaped with mean 28 and standard deviation 7, then according to the Empirical Rule, 68.0% of the data will lie between which values?
According to the CDC, the distribution of heights of 12-year-old males is approximately symmetric and bell-shaped with a mean of 149 cm and a standard deviation of 9 cm 9) a) About what percentage of 12-year-old boys are more than 158 cm tall? 16% b) About what percentage of 12-year-old boys have heights between 131 and 140 cm? 13.5%
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.)
Heights of men on a baseball team have a bell-shaped
distribution with a mean of 185 cm and a standard deviation of 5
cm. Using the empirical rule, what is the approximate percentage of
the men between the following values?
4. (10) Heights of men on a baseball team have a bell-shaped distribution with a mean of 185 cm and a standard deviation of 5 cm. Using the empirical rule, what is the values? Please show your work! A. %...
The length of a fish species has a normal distribution with a mean of 16cm and a standard deviation of 6cm. A) what is the IQR of the lengths of these fish? B) What is the length of the range in which the middle 95% of the fish lie? C) The upper and lower deciles are the points that mark out the highest 10% and the lowest 10% of the population. Find the upper and lower deciles for the fish...
Suppose that diameters of a new species of apple have a bell shaped distribution with a mean of 7.43 cm and a standard deviation of 0.45 cm. Using the empirical rule, what percentage of the apples have diameters that are between 6.53 cm and 8.33 cm?
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?