Question

A sample of ?=24 observations is drawn from a normal population with ?=1000 and ?=240. Find each of the following:

A. ?(?¯>1097)

Probability =

B. ?(?¯<906)

Probability =

C. ?(?¯>990)

Probability =

Answer #1

A sample of ?=14n=14 observations is drawn from a normal
population with ?=990μ=990 and ?=210σ=210. Find each of the
following:
A. ?(?¯>1113)P(X¯>1113)
Probability =
B. ?(?¯<877)P(X¯<877)
Probability =
C. ?(?¯>967)P(X¯>967)
Probability =

A sample of n=15 observations is drawn from a normal population
with μ=1060 and σ=150. Find each of the following:
A. P(X¯>1137)
Probability =
B. P(X¯<982)
Probability =
C. P(X¯>1009)
Probability =

A sample of n=14 observations is drawn from a normal population
with μ=1030 and σ=200. Find each of the following:
A. P(X¯>1110)
Probability =
B. P(X¯<944)
Probability =
C. P(X¯>997)
Probability =
THANK YOU!!

A sample of n=23 observations is drawn from a normal population
with μ=960 and σ=160. Find each of the following:
A. P(X¯>1013)
I have a general idea of how to get the z- score, but am having
trouble moving forward from there.

Let the following sample of 8 observations be drawn from a
normal population with unknown mean and standard deviation: 23, 26,
22, 20, 16, 21, 25, 24. [You may find it useful to
reference the t table.]
a. Calculate the sample mean and the sample
standard deviation. (Round intermediate calculations to at
least 4 decimal places. Round "Sample mean" to 3 decimal places and
"Sample standard deviation" to 2 decimal places.)
b. Construct the 90% confidence interval for
the population...

A random sample of 100 observations was drawn from a normal
population. The sample variance was calculated to be s^2 = 220.
Test with α = .05 to determine whether we can infer that the
population variance differs from 300. Use p-value (from chi-square
table) and critical value

A random sample of n=36 observations is drawn from a population
with a mean equal to 60 and a standard deviation equal to 36.
a. Find the probability that x? is less than 48 ____
b. Find the probability that x? is greater than 63____
c. Find the probability that x? falls between 48 and 78 ____

A random sample of 25 observations is to be drawn from a
population with the mean of 40 and a standard deviation of 25. The
probability that the mean of the sample will exceed 45 is:
a.Not possible to compute
b. 0.4772
c. 0.4207
d. 0.0228

If the random variable X is drawn from a normal population with
?=155 and ?=11, find each of the following:
A. ?(?>168)
Probability =
B. ?(?<136)
Probability =
C. ?(150<?<160)
Probability =

Let the following sample of 8 observations be drawn from a
normal population with unknown mean and standard deviation: 28, 23,
18, 15, 16, 5, 21, 13. [You may find it useful to reference
the t table.]
a. Calculate the sample mean and the sample
standard deviation. (Round intermediate calculations to at
least 4 decimal places. Round "Sample mean" to 3 decimal places and
"Sample standard deviation" to 2 decimal places.)
b. Construct the 90% confidence interval for
the population...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 13 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago