A company that manufactures storage bins for grains made a drawing of a silo. The silo has a conical base, as shown below:

Which of the following could be used to calculate the total volume of grains that can be stored in the silo?

π(2ft)2(8ft) + one over threeπ(2ft)2(9.5ft − 8ft)
π(8ft)2(2ft) + one over threeπ(2ft)2(9.5ft − 8ft)
π(2ft)2(8ft) + one over threeπ(9.5ft − 8ft)2(2ft)
π(8ft)2(2ft) + one over threeπ(9.5ft − 8ft)2(2ft)

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Hannah has 5 more than twice the number of baseball cards that leo has. if leo has x cards, which expression shows the number of baseball cards hannah has?

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.