Answer:
yes, that is very correct
Step-by-step explanation:
yes
Answer:
No
Step-by-step explanation:
The exponents are too far apart for a +2 to make a difference.
It can be any number from 450000 to 549999. This is due to the fact that
when figures like this are reported they are either rounded up or down.
Answer:
The probability that the average final exam grade of this sample is between 77 and 82
P(77≤ x⁻≤ 82 = 0.8315 or 83%
Step-by-step explanation:
<u><em>Step(i):</em></u>-
Given random sample size 'n' = 40
Mean of the normal distribution = 81
Standard deviation of normal distribution = 6.6
Let x₁⁻ = 77
Z₁ = -3.83
Let x₂⁻ = 77
Z₂ = 0.958
<em>The probability that the average final exam grade of this sample is between 77 and 82</em>
P(77≤ x≤ 82) = P( -3.83 ≤x≤0.958)
= A( 0.958) + A(3.83)
= 0.3315 + 0.4995
= 0.8315
<em>The probability that the average final exam grade of this sample is between 77 and 82 = 0.8315 or 83%</em>
Answer:
ok so 3-1.7=1.3
Step-by-step explanation:
this is bc 3-1=2-0.7=1.3