The weight of laboratory mice follows a normal distribution, with a mean of 0.68 ounce and a standard deviation of 0.02 ounce. what percentage of the mice weigh between 0.62 ounce and 0.74 ounce?

a.99.7%
b.95%
c.68%
d.47.5%
e.34%

A.99.7%

Step-by-step explanation:

Calculate each z-score.

z = (x − μ) / σ

z = (0.74 − 0.68) / 0.02

z = 3

z = (x − μ) / σ

z = (0.62 − 0.68) / 0.02

z = -3

You can use a z-score table, or use the empirical rule.

P(-3 < z < 3) = 99.7%.

b mark me branliest thx

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