Question

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.

Answer #1

We can easily found the z score in R

Code for the same is attached herewith

A)

So z score for area to the left of 0.47 is -0.0752

B)

Since the R code gives the z score for the area to left of the given value

In normal distribution we know that it is symmetric distribution

So Z score corresponding to the area to right is equvivalent to the (1-area) to the left

i.e., we can find it in such a way that a score to area to the left is (1-0.21) = 0.79

and it is equal to 0.8064212

Find the z-score such that:
The area under the standard normal model to its left is 0.9412 z
=
The area under the standard normal model to its right is 0.1576
z =

Find the indicated z-score. Find the indicated z-score. Find the
z-score having area 0.86 to its right under the standard normal
curve; that is, find z0.86.
Select one:
a. 0.5557
b. -1.08
c. 0.8051
d. 1.08r

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.

The values of z-score are given.
1a.) Find the area under the normal curve to the right of
z = -0.86. Round the answer to four decimal places.
The area under the normal curve to the right of z =
-0.86 is ____.
1c.) Find the area under the normal curve between z =
-0.32 and z = 0.92. Round the answer to four decimal
places.
The area under the normal curve between z = -0.32 and
z = 0.92...

Find the z-score that has 82.89% of the distribution'a area to
its right.

1. Find the area under the standard normal curve to the left of
z = 1.66.
2. Find the area under the standard normal curve between z =
-1.75 and z = 0.96.
3. Find the z-score for which the area to its right is 0.67.
4. A normal population has mean 176=m and a standard deviation
.38=s What proportion of the population is more than 185?

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 12 – 15, round to 2DP.
12. Find the z-score for which 70% of the area is to the
right.
_________
13. Find the z-score that corresponds to P6
________________
14. Find the z-scores for which 60% of the
distribution’s area lies between − z and z.
__________

1) Find
the z-score
for which 99% of the distribution's
area lies between -z
and z.

I was wondering how to find the are left of a z score on a TI-84
calculator.
For example, find the area to the left of z=-3.20 when the mean
is 64.2 and standard deviation is 4.2
Please explain with the use of the TI 84!

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