If Z is a standard normal random variable and P(−zy < Z < zy) = 0.99 then,

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Question 3
Abi
Marked out of 1.00
==Son
If Z is a standard normal random variable
and P(-Zy < Z < zy) = 0.99 then,
Select one:
a. Zy = 0.005
b. Zy = 2.576
O C. Zy = 0.001
d. Zy = 2.326
Question 4
ered
-00
Given a normally distributed variable X with
mean 18 and standard deviation 2.5, what is
the value of k that will satisfy the condition
P(X < k) = 0.2236?
Transcribed Image Text:Question 3 Abi Marked out of 1.00 ==Son If Z is a standard normal random variable and P(-Zy < Z < zy) = 0.99 then, Select one: a. Zy = 0.005 b. Zy = 2.576 O C. Zy = 0.001 d. Zy = 2.326 Question 4 ered -00 Given a normally distributed variable X with mean 18 and standard deviation 2.5, what is the value of k that will satisfy the condition P(X < k) = 0.2236?
If X
P(X = 5) =
Normal (5, 25), then
Select one:
a. 0.75
b. 0.5
О) с. 0
O d. 0.25
Question 2
ered
90
stion
If Z Normal (0, 1), then
P(-Zal2 < Z < Zα/2) =
Select one:
a. α
b. a/2
O C. 1 – α
O d. 1 -a/2
Transcribed Image Text:If X P(X = 5) = Normal (5, 25), then Select one: a. 0.75 b. 0.5 О) с. 0 O d. 0.25 Question 2 ered 90 stion If Z Normal (0, 1), then P(-Zal2 < Z < Zα/2) = Select one: a. α b. a/2 O C. 1 – α O d. 1 -a/2
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