The hours of sleep per week night among college students, is found to be Normally distributed with a mean of 6 hours and a standard deviation of 1 hour. The percentage of college students that sleep at least 8 hours per night is about Group of answer choices A) 16% B) 2.5% C) 97.5%

2.275%

Step-by-step explanation:

Given that:

Mean, m = 6

Standard deviation, s = 1

x ≥ 8

P(x ≥ 8)

Zscore = (x - m) / s

Zscore = (8 - 6) / 1

Zscore = 2

P(Z ≥ 2) = 1 - P(Z ≤ 2)

P(Z ≤ 2) = 0.97725

P(Z ≥ 2) = 1 - 0.97725

P(Z ≥ 2) = 0.02275

0.02275 * 100%

= 2.275

ryan had a head start of 10 meters.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions