Question

Given a normal distribution with

μ=50

and

σ=5,

and given you select a sample of

n=100,

complete parts (a) through (d).

a. What is the probability that X is less than 49?

P(X<49)=

b. What is the probability that X is between 49 and 51.5?

P(49<X<51.5)=

c. What is the probability that X is above 50.9?

P(X>50.9)=

d. There is a 30% chance that X is above what value?

X=

Answer #1

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Given a normal distribution with μ =100 and σ =8, and given you
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Given a normal distribution with μ = 103 σ= 25 you select a
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Given a normal distribution with muequals103 and sigmaequals25,
and given you select a sample of n equals 25, complete parts (a)
through (d).
d. There is a 63% chance that Upper X overbar is above what
value?

Given a normal distribution with μ= 101 and σ = 20, and given
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What is the probability that X is above 102.6?
P (X > 102.6) =

Given a normal distribution with
muμequals=105
and
sigmaσequals=20,
and given you select a sample of
n equals 16n=16,
complete parts (a) through (d).Click here to view page 1 of
the cumulative standardized normal distribution table.
LOADING...
Click here to view page 2 of the cumulative standardized normal
distribution table.
LOADING...
a. What is the probability that
Upper X overbarX
is less than
9292?
P(Upper X overbarXless than<9292)equals=. 0047.0047
(Type an integer or decimal rounded to four decimal places as
needed.)...

Given a normal distribution with μ=100 and σ=10, complete parts
(a) through (d).
a. What is the probability that X>80?
(Round to four decimal places as needed.)
b. What is the probability that X<95?
(Round to four decimal places as needed.)
c. What is the probability that X<75 or X>110?
(Round to four decimal places as needed.)
d. 80% of the values are between what two X-values
(symmetrically distributed around the mean)?
(Round to two decimal places as needed.)

QUESTION 1
Given a normal distribution with μ = 50 and σ = 4, what is the
probability that
a) P (X > 43)
b) P (X<42)
c) 5% of the values are less than what X value
QUESTION 2
Toby’s truck company determined that on an annual basis the
distance traveled per truck is normally distributed with a mean of
50 thousand miles and a standard deviation of 12 thousand
miles
REQUIRED:
a)what proportion of trucks can be expected...

For a normal distribution where μ= 100 and σ= 10, What is the
probability of:
a. P(X>80)
b. P(95<X<105)
c. P(X<50)
d. P(X>100)
e. P(X<90 y X>110)
f. P(X>135)

A population of values has a normal distribution with μ=50 and
σ=98.2. You intend to draw a random sample of size n=13.
Find the probability that a single randomly selected value is
less than -1.7. P(X < -1.7) =
Find the probability that a sample of size n=13 is randomly
selected with a mean less than -1.7.
P(M < -1.7) =
Enter your answers as numbers accurate to 4 decimal places. Answers
obtained using exact z-scores or z-scores rounded
to...

Given a normal distribution with μ=53 and σ=3.
a. What is the probability that X>49? P(X>49)=_____
(Round to four decimal places as needed.)
b. What is the probability thatX<47?
P(X<47)equals=_____ (Round to four decimal places as
needed.)
c. For this distribution, 7% of the values are less than what
X-value? X=_____ (Round to the nearest integer as needed.)
d. Between what two X-values (symmetrically distributed around
the mean) are 80% of the values? For this distribution, 80% of
the values...

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