Question
In: Statistics and Probability
A population has a mean of 400 and a standard deviation of 90. Suppose a sample...
A population has a mean of 400 and a standard deviation of 90. Suppose a sample of size 125 is selected and x bar is used to estimate mu.
a. What is the probability that the sample mean will be within +/- 5 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)
b.What is the probability that the sample mean will be within +/- 10 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)
Solutions
orchestra answered 2 years agoRelated Solutions
A population has a mean of 400 and a standard deviation of 70. Suppose a sample...
A population has a mean of 400 and a standard deviation of 70.
Suppose a sample of size 125 is selected. Use z-table.
a. What is the probability that the sample mean
will be within +4 or -4 of the population mean (to 4 decimals)?
b. What is the probability that the sample mean
will be within +10 0r -10 of the population mean (to 4
decimals)?
A population has a mean of 400 and a standard deviation of 60. Suppose a sample...
A population has a mean of 400 and a standard deviation of 60.
Suppose a sample of size 125 is selected and is used to
estimate . Use z-table.
What is the probability that the sample mean will be within +/-
4 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
15 of the population mean (to 4 decimals)? (Round z...
A population has a mean of 400 and a standard deviation of 50. Suppose a sample...
A population has a mean of 400 and a standard deviation of 50.
Suppose a sample of size 125 is selected and is used to
estimate . Use z-table.
What is the probability that the sample mean will be within +/-
9 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
10 of the population mean (to 4 decimals)? (Round...
A population has a mean of 300 and a standard deviation of 90. Suppose a sample...
A population has a mean of 300 and a standard deviation of 90.
Suppose a sample of size 125 is selected and is used to estimate .
Use z-table.
What is the probability that the sample mean will be within +/-
3 of the population mean (to 4 decimals)? (Round z value in
intermediate calculations to 2 decimal places.) 0.8884 What is the
probability that the sample mean will be within +/- 11 of the
population mean (to 4 decimals)?...
A population has a mean of 300 and a standard deviation of 90. Suppose a sample...
A population has a mean of 300 and a standard deviation of 90.
Suppose a sample of size 125 is selected and is used to
estimate . Use z-table.
What is the probability that the sample mean will be within +/-
7 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
13 of the population mean (to 4 decimals)? (Round z...
A population has a mean of 400 and a standard deviation of 800 . Suppose a...
A population has a mean of 400 and a standard deviation of 800 .
Suppose a sample of size 100 is selected and is used to estimate .
Use z-table. a. What is the probability that the sample mean will
be within +-8 of the population mean (to 4 decimals)? .3830 b. What
is the probability that the sample mean will be within +-16 of the
population mean (to 4 decimals)?
A population has a mean of 300 and a standard deviation of 70. Suppose a sample...
A population has a mean of 300 and a standard deviation of 70.
Suppose a sample of size 125 is selected and is used to
estimate . Use z-table.
What is the probability that the sample mean will be within +/-
3 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
10 of the population mean (to 4 decimals)? (Round z...
A population has a mean of 300 and a standard deviation of 80. Suppose a sample...
A population has a mean of 300 and a standard deviation of 80.
Suppose a sample of size 125 is selected and X is used to estimate
M. Use z-table.
What is the probability that the sample mean will be within +/-
6 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
15 of the population mean (to 4 decimals)?...
A population has a mean of 300 and a standard deviation of 80. Suppose a sample...
A population has a mean of 300 and a standard deviation of 80.
Suppose a sample of size 125 is selected and X is used to estimate
M. Use z-table.
What is the probability that the sample mean will be within +/-
6 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
15 of the population mean (to 4 decimals)?...
A population has a mean of 200 and a standard deviation of 70. Suppose a sample...
A population has a mean of 200 and a standard deviation of 70.
Suppose a sample of size 100 is selected and is used to estimate .
Use z-tableWhat is the probability that the sample mean will be
within +/- 6 of the population mean (to 4 decimals)What is the
probability that the sample mean will be within +/- 19 of the
population mean
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