I'm a nurse and I have no clue on stats in general but I have this question that I can't solve. Normally distributed variable. - N=104 - Range 14.98±6.23. I have to determine the range where 70% of participants (n=73) fall into, and also if another random sample of 104 participants was selected from the same population, what is the chance that the average of this new sample will be over 16 surfaces?

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

what is the model?

step-by-step explanation: