Consider the set of numbers (3.5, 7, 12, 2.1, 1, 13.8, 4.2, 15, 8.9, 4.2}. If a number is selected at random from this list, what is the probability that the chosen number is less than the arithmetic
mean of the numbers on the list?
0.6
0.3
0.5
0.4

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0