To assess the accuracy of a metallurgical laboratory scale, a standard weight that is
known to weigh 1 is repeatedly weighed four times. the resulting
measurements (in grams) are: 0.95, 1.02, 1.01, and 0.98. assume the weightings by
the scale when the true weight is 1 are normall distributed with mean .
(i) use these data to construct a 95% confidence interval for �

125 yards

step-by-step explanation:

i take 75 plus 50.

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step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form