Question

a.) For a standard normal curve, find the area between z = 0.28 and z = 1.95. (Use 4 decimal places.)

b.) Find the positive *z* value such that 89% of the
standard normal curve lies between *–z* and *z*. (Use
2 decimal places.)

c.) Given a normal distribution with population standard
deviation of 21 and a mean of *μ* = 29. If a random sample
of size 62 is drawn, find *P*(29 ≤ *x* ≤ 31).

Round to three decimal places.

d.) If we want to estimate *p*, the population proportion
of likely voters who believe the state of the economy to be the
most urgent national concern, with 90% confidence and a margin of
error no greater than 2%, how many likely voters need to be
surveyed? Assume that you have no idea of the value of
*p*.

-1024

-1692

-4096

-6765

Answer #1

a.) Given a normal distribution with population standard
deviation of 21 and a mean of μ = 29. If a random sample
of size 62 is drawn, find P(29 ≤ x ≤ 31).
Round to three decimal places.
b.) Find the positive z value such that 89% of the
standard normal curve lies between –z and z. (Use
2 decimal places.)
c.) For a standard normal curve, find the area between
z = 0.28 and z = 1.95. (Use 4...

Find the area under the standard normal curve that lies between
the following two z values. Round your answers to at least four
decimal places.
(a)Find the area under the standard normal curve that lies
between = z − 1.28 and = z 1.36 .
(b)Find the area under the standard normal curve that lies
between = z − 2.17 and = z − 1.92 .
(c)Find the area under the standard normal curve that lies
between = z 1.36...

Find z such that 7.8% of the standard normal curve lies to the
left of z. z = ______. Find z such that 7.4% of the standard normal
curve lies to the right of z. z = ______. Find the z value such
that 81% of the standard normal curve lies between −z and z. (Round
your answer to two decimal places.) z = ______.

1)
a) Find the area under the Standard Normal Curve in-between z =
-0.59 and z = 2.86
Use the Normal table and give answer using 4 decimal places.
b) Find the area under the Standard Normal Curve in-between z =
-0.36 and z = 2.63
Use the Normal table and give answer using 4 decimal places.
c) Find P(z < 1.75)
Use the Normal table and give answer using 4 decimal places.

a)Find the area under the standard normal curve between
z = -1.86 and z = 1.1, P(-1.86 <
z < 1.1). (Give your answer correct to four decimal
places.)
b)Find the area under the standard normal curve between
z = -2.53 and z = 1.4, P(-2.53 <
z < 1.4). (Give your answer correct to four decimal
places.)
c)Consider the normal curve. (Give your answers correct to four
decimal places.)
1) Find the area to the right of z =...

(a)Find the area under the standard normal curve that lies
outside the interval between =z−1.73 and =z1.99.
(b)Find the area under the standard normal curve that lies
outside the interval between =z−1.75 and =z0.99.
(c)Find the area under the standard normal curve that lies
outside the interval between =z0.89 and =z1.41.
(d)Find the area under the standard normal curve that lies
outside the interval between =z−1.80 and =z−1.33.

a. Find z such
that 24% of the standard normal curve lies to the right of z.
b. Find the z values such that 64% of the standard normal curve
lies between –z and z
c. Find z such that 36% of the standard normal curve lies to the
left of z

Using the TI 84 calculator, find the area under the standard
normal curve. Round the answers to four decimal places.
a) find the area under the standard normal curve to the left of
z= -2.16
b) find the area under the standard normal curve to the right of
z =-0.04
c) find the area under the standard normal curve that lies
between z =-2.3 and z=1.08
d) find the area under the standard normal curve that lies
outside the interval...

find the z value such that 39% of the standard normal curve lies
between -z and z.

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 18 minutes ago

asked 36 minutes ago

asked 46 minutes ago

asked 48 minutes ago

asked 52 minutes ago

asked 52 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago