The table shows the age, in years, of employees in a company. Age (a) in years Frequency 18 < a < 20 3 20 < a < 22 2 22 < a < 24 7 24 < a < 26 8 26 0 a) Find the modal class interval. Isac b) Work out an estimate of the mean age of these employees.

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Which point does not lie on the graph k(x) = 8 -3 √x a. (-64, 12) b. (125, 3) c. (343, 1) d. (8, 5)