The arrival time of an elevator in a 12-story dormitory is equally likely at any time during the next 4 minutes. a. Calculate the expected arrival time. Note: Round your answer to 2 decimal places. Expected arrival time square b. What is the probability that an elevator arrives in less than 11/2 minutes? Note: Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places. Probability square c. What is the probability that the wait for an elevator is more than 11/2 minutes? Note: Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places. Probability square

QUESTION 5 .1 POINT Norville is examining the pollutants in waterways. He collects data from 15 near industrial parks with the data in ppr Find the mean for this set, using the TI-84. Round to 3 decimal places if necessary. $1354\quad 592\quad 2347\quad 483\quad 3744\quad 728\quad 1248\quad 1220\quad 3751\quad 2362\quad 676\quad 110\quad 3581\quad 3585\quad 3343$ Provide your answer below: $mean=\square $

1 Fill in the Hank 3points Ahistogram can give you the $\square $ the data, the choose your answer. of the data. choose your answer. $\square $ and the $\square $ v choose your answer- choose your answer... end The barsor intervals in a histor shape and represent the data. 2

Apply the distributive property to the expression. $100(0.07a+0.02b)=\square $

51. Find the volume of a pyramid with a square base, where the perimeter of the base is 15.8 ft and the height of the pyramid is 20.4 ft. Round your answer to the nearest tenth of a cubic foot.

4) $v^{1}=$ A) 0 B) 1 OC) v OD) $1/v$

What is the range of the function graphed above? $-\infty \lt y\leqslant 2$ $-\frac {3}{2}\leqslant y\lt \infty $ $-\infty \lt y\lt \infty $ $\{ 2\} $

2. You are inscribing a regular pentagon in a cIrcle. You need to know the angle measure between the vertices. You divide $360^{\circ }$ by what number? 3 s 6

Which equation represents a line that has a slope of $-\frac {1}{2}$ and passes through point $(4,-5)$ $y=-\frac {1}{2}x+\frac {3}{2}$ $y=-\frac {1}{2}x+\frac {13}{2}$ $y=-\frac {1}{2}x-7$ $y=-\frac {1}{2}x-3$

Smartphones: A poll agency reports that $38\% $ of teenagers aged $12-17$ own smartphones. A random sample of 120 teenagers is drawn. Round your answers to at least four decimal places as needed Part: 0/6 Part 1 of 6 (a) Find the mean $\mu _{\hat {p}}$ The mean $\mu _{\hat {p}}$ is 45.6000 Part: 1/6 Part 2 of 6 (b) Find the standard deviation $\sigma _{\hat {p}}$ The standard deviation $\sigma _{\hat {p}}$ is $\square $

1. If $x+3=7$ then x equals: A. 3 B. 4 C. 5 D. 10