statistics
lina12
stat._practice.docx
Shade in the region which represents P(0≤ z ≤ 0.54)
Show the bottom 27% of the area under standard normal distribution. Then find the number Z such that P(z ≤ z) = 0.27
normal distribution N(35,10) P(x≥-20) and P(x≥-20) Calculate the desired probability and shade area.
Find an X –value or X-values. Normal distribution , sketch and shade region of 48% of the area under N(-50,20), Then find the numbers X lower bound, X upper bound such that P(x lower bound ≤X≤ upper bound) =0.48
On a standard normal distribution, sketch and find P(-0.5 ≤ z ≤ 1,5)
On a standard normal distribution, sketch the region you think represents the highest 30% of the data. Then find the value for Z lower bound for which P(z ≥ z lower bound) =0.3
On the normal distribution N(100,5), sketch the region whose area represents P(91 ≤ x ≤ 99). Then find the probability P( 91 ≤ x≤ 99).
On the normal distribution N(-15, 40), sketch the region you think represents the lowest 25% of the data. Then find the value X upper bound for which P(x ≤ X upper bound) = 0.25
