Suppose 110 geology students measure the mass of an ore sample. Due to human error and limitations in the reliability of the balance, not all the readings are equal The results are found to closely approximate a normal curve, with mean 83 g and standard deviation 2 g. Use the symmetry of the normal curve and the empirical rule
as needed to estimate the number of students reporting readings between 81 g and 85 9.
The number of students reporting readings between 81 g and 85 g is
(Round to the nearest whole number as needed)

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

other answer is correct. i had used the radius of the radius somehow. a website:

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step-by-step explanation:

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