You’ve been hired to design a survey to estimate the amount a guest intends to spend during a visit to the Elmhurst College Casino and Hookah Lounge. Given that guest expenditures are normally distributed, how large a sample do you need to be 95% confident that the error is no more than $5.00? Past data estimates the standard deviation to be $20.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

0.50 , 0.75

step-by-step explanation:

i think the answer is c sorry if it's wrong