X 4 6 9 11 15
P(x) 0.20 0.34 0.15 0.22 0.09
This table shows a probability
distribution for a discrete random
variable. What is the mean of this
discrete random variable?
O9
O 0.2
0 1
O 7.96

Can any one me with the answers to these questions asap?

Need now 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.

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.