A random sample of 2000 depositors at a bank are categorised by age and gender in the table below. Gender
Age Male Female Total
30 years or less 800 600 1400
31 years or more 400 200 600
Total 1200 800 2000
If a customer is selected at random from this sample, what is the probability the individual is not more than 30 years old given that they are female?

0.75

0.30

0.52

0.20

What is this inequality notation? t is less then or equal to 2

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.