Assume that all grade-point averages are to be standardized on a scale between 0 and 5. how many grade-point averages must be obtained so that the sample mean is within 0.007 of the population mean? assume that a 95% confidence level is desired. if using the range rule of thumb, sigma can be estimated as startfraction range over 4 endfraction equalsstartfraction 5 minus 0 over 4 endfraction equals1.25. does the sample size seem practical? explain why?

answer: okw

step-by-step explanation:

answer: 1 + 1 = 11

step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s

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