Annie enjoys going to the beach to look for shells. On Saturday, she found 4 times as many shells as she found on Sunday.
If Annie found 21 more shells on Saturday than on Sunday, how many shells did she find
altogether over the weekend?
shells

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .

What is the interquartile range (iqr) of the data set represented by this box plot?