Question

Write only a number as your answer. Round to two decimal places.

1.) Find the z-score for which the area to its right is 0.45.

2.) Find the z-score for which the area to its left is 0.58.

3.) Find the z-score for which the area to its right is 0.49.

4.) Find the z-score for which the area to its left is 0.40.

Answer #1

Assume a normal distribution. (Give your answer correct to two
decimal places.)
(a) Find the z-score associated with the 59th percentile.
(b) Find the z-score associated with the 82nd percentile.
(c) Find the z-score associated with the 92nd percentile.

1- Find the area under the standard normal curve between z=0.76
and z=1.90.
Round your answer to four decimal places.
2- Find the area under the standard normal curve between z=-2.49
and z=-0.44.
Round your answer to four decimal places.
3- Find the area under the standard normal curve between z=-2.26
and z=1.88.
Round your answer to four decimal places.
4- Find the area under the standard normal curve to the right of
z=2.37.
Round your answer to four decimal...

1. If a z score is found to be 0.7, what is the resulting
probability IN THE RIGHT TAIL, please round 4 decimal places.
2. If a z score is found to be 0.08, what is the resulting
probability IN THE NON-TAIL? please round 4 decimal places.
3. If a probability or area is found to be 0.3024, what is the z
score. round 2 places decimal places
4. If a probability or area is found to be 0.8099, what...

Find the z-score for which the area to its left is 0.47.
Find the z-score for which the area to its right is 0.21.

(a) Find a z0 that has area 0.9525 to its
left. (Round your answer to two decimal places.)
z0 =
(b) Find a z0 that has area 0.05 to its left.
(Round your answer to two decimal places.)
z0 =
Find the following percentiles for the standard normal
random variable z. (Round your answers to two decimal
places.)
(a) 90th percentile
z =
(b) 95th percentile
z =
(c) 97th percentile
z =
(d) 99th percentile
z =
A normal random variable x has...

Consider the following. (Give your answers correct to two
decimal places.)
(a) Find the standard score (z) such that the area
below the mean and above z under the normal curve is
0.3961.
(b) Find the standard score (z) such that the area below
the mean and above z under the normal curve is
0.4812.
(c) Find the standard score (z) such that the area below
the mean and above z under the normal curve is 0.3733.

use
the standard normla table to find the z-score thag corresponds to
tbe given percentile . if the area is not in the table use the
entry closest to the area . if the area is halfway between two
entries use the z-score halfway between the corresponding z-scores
1. the z-score that corresponds to P80 is ??
(round to two decimal places as needed)
find the z -score that has 97.5% of the distribution's area to
its left
1. the...

1. Find P(Z < -1.54). Round off to 4 decimal
places.
2. Find P(Z > 1.45). Round off to 4 decimal
places.
3. Find P(-1.54 < Z < 1.45). Round off to 4
decimal places.
4. The monthly electric bills in a city are normally
distributed with a mean of $125 and a standard deviation of $22.
Find the x-value corresponding to a z-score of 1.65.
5. Find z if P(Z < z) = 0.028.
6. The weights of bags...

Please answer the questions below
1. Find the z-score that has 48.8% of the distribution's area
to its left?
2. Find the z-scores for which 5% of the distribution's area
lies between minus−z and z?
3. Find the indicated area under the standard normal curve.
Between z=0 and z=1.34 The area between
z=0 and z=1.34 under the standard normal curve is?

For the standard normal random variable z, find
z for each situation. If required, round your answers to
two decimal places. For those boxes in which you must enter
subtractive or negative numbers use a minus sign. (Example:
-300)'
a. The area to the left of z is 0.1827. z
=
b. The area between −z and z is 0.9830.
z =
c. The area between −z and z is 0.2148.
z =
d. The area to the left of...

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