The mean number of words per minute (WPM) typed by a speed typist is 149 with a standard deviation of 10 WPM
What is the probability that the sample mean would differ from the population mean by greater than 2.8
WPM if 60 speed typists are randomly selected? Round your answer to four decimal places.

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220