Ineed to make sure this is correct then im done : )

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Leonardo wrote an equation that has an infinite number of solutions. one of the terms in leonardo’s equation is missing, as shown below.

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