John works 21 hours a week and earns 157.50. How much does John make per hour?

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.