For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of and a standard deviation of . The grading process of this year's exam has just begun. The average score of the exams graded so far is . What is the probability that a sample of exams will have a mean score of or more if the exam scores follow the same distribution as in the past

28

step-by-step explanation:

because that's the answer

18.75 gallons

step-by-step explanation:

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)