Question

Standard normal proportion. Use table B to find the proportion of a standard normal distribution that is: (a) below -1.42 (b) above 1.42 (c) below 1.25 (d) between 1.42 and 1.25

Answer #1

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Use Table A to find the proportion of observations from a
standard Normal distribution that satisfies each of the following
statements. Enter your answers rounded to four decimal places.
a) ?<−0.46=
b) ?>−1.51=
c) ?<2.21=
d) −0.46<?<2.21=

Use Table A to find
the proportion of the standard Normal distribution that satisfies
each of the following statements.
(a)z<0.22(b)z>0.22(c)z>0.0999999999999996(d)0.0999999999999996<z<0.22(a)z<0.22(b)z>0.22(c)z>0.0999999999999996(d)0.0999999999999996<z<0.22
(a)
(b)
(c)
(d)
please explain what steps you took and if you used a calculator
please explain what function you used .

Use Minitab Express to construct a standard normal distribution
to find the proportion of the curve above z = 2. Show your
distribution

Using the unit normal table, find the proportion under the
standard normal curve that lies between the following values.
(Round your answers to four decimal places.)
https://www.webassign.net/priviterastats3/priviterastats3_appendix_c.pdf
<-- unit normal table
(a) the mean and
z = 0
(b) the mean and
z = 1.96
(c)
z = −1.80 and z = 1.80
(d)
z = −0.40 and z = −0.10
(e)
z = 1.00 and z = 2.00

For a standard normal distribution, find the percentage of data
that are: a. within 1 standard deviation of the mean ____________%
b. between - 3 and + 3. ____________% c. between -1 standard
deviation below the mean and 2 standard deviations above the
mean

Using the unit normal table, find the proportion under the
standard normal curve that lies between the following values.
(Round your answers to four decimal places.)
(a) the mean and z = 0 (b) the mean and z = 1.96 (c) z = −1.80
and z = 1.80 (d) z = −0.80 and z = −0.20 (e) z = 1.00 and z =
2.00

For a standard normal? distribution, determine the probabilities
in parts a through d below.
a. Find ?P(z ? 1.53).
b. Find ?P(z ? ?1.25?).
c. Find P(?0.81 ? z ? 1.77?).
d. Find ?P(0.33 ? z ? 2.11?).

Using the unit normal table, find the proportion under the
standard normal curve that lies between the following values.
(Round your answers to four decimal places.) (a) the mean and z = 0
0.3989 Incorrect: Your answer is incorrect. (b) the mean and z =
1.96 0.0250 Incorrect: Your answer is incorrect. (c) z = −1.30 and
z = 1.30 (d) z = −0.80 and z = −0.20

Use Table A to find the value z of a standard Normal variable
that satisfies each of the following conditions. (Use the value of
z from Table A that comes closest to satisfying the condition.) In
each case, sketch a standard Normal curve with your value of z
marked on the axis. (Round your answers to two decimal places.)
(a) The point z with 60% of the observations falling below
it
(b) The point z with 17% of the observations...

A. For a standard normal distribution, find:
P(-1.14 < z < -0.41)
B. For a standard normal distribution, given:
P(z < c) = 0.0278
Find c.
C. For a standard normal distribution, find:
P(z > c) = 0.4907
Find c.
D. Assume that z-scores are normally distributed with a mean
of 0 and a standard deviation of 1.
IfP(0<z<a)=0.4686P(0<z<a) = 0.4686
find a.
E. Assume that the readings at freezing on a bundle of
thermometers are normally distributed with a...

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