Agiven probability equation is p(x) = 2x-1/16 (where x can be 1,2,3 or 4) does this determine probability distribution why or why not

yes because the sum of all of the probabilities is not 1.

no because the sum of all of the probabilities is not 1.

no because the sum of all of the probabilities is 1.

yes because the sum of all of the probabilities is 1.

Which statements about these triangles is true

Bring the fraction a/a-4 to a denominator of 16-a^2

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.