Question

A) What proportion of the area under a normal curve is to the left of z = -0.44?

B) What proportion of the area under a normal curve is to the left of z = 0.63?

C) April 10, 2017, was an unseasonably warm day with a temperature of 82 degrees (Fahrenheit). The mean temperature for April 13th over the last 50 years is 72 with a standard deviation of 4.

1. What is the z-score for the temperature on April 10, 2017?

2. What is the probability that next year on April 13th the temperature will be cooler than 82 degrees?

Answer #1

Find the indicated area under the standard normal curve.
To the left of z= -1.09 and to the right of z= 1.09
A) The total area to the left of z= −1.09 and to the right of z=
1.09 under the standard normal curve is:_______? (Round to four
deciamal places as needed).

Determine the area under the standard normal curve that lies to
the left of (a) Z= 1.56 (b) Z= 1.05 (c) Z= 1.28 and (d) Z=
-1.34.
(a) The area to the left of Z= 1.56 is ___.

2. a) Find the area under the standard normal curve to the right
of z = 1.5.
b) Find the area under the standard normal curve to the left of
z = 1.
c) Find the area under the standard normal curve to the left of
z = -1.25.
d) Find the area under the standard normal curve between z = -1
and z = 2.
e) Find the area under the standard normal curve between z =
-1.5 and...

Find the area under the standard normal curve to the left of
z=−2.83 and to the right of z=2.15. Round your answer to four
decimal places, if necessary.

Find the area under the standard normal curve to the left of
z=−2.8 and to the right of z=2.06. Round your answer to four
decimal places, if necessary.

find the area under the standard normal curve to the left of z =
-2.75 and to the right of 2.6. round to four decimal places.

Determine the area under the standard normal curve that lies to
the left of (a) z=1.02, (b) z=0.73, (c) z=1.45, and (d)
z=0.15.

Using the standard normal distribution determine:
a) The area under the curve to the left of z=-2.38
b) The area under the curve to the right of z=1.17
c) The area under the curve between z=-1.52 and z=2.04

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 area under the standard normal curve to the left of
z=−1.51z=−1.51 and to the right of z=1.4z=1.4. Round your answer to
four decimal places, if necessary.

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