Question

Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 20?, upper bound is 30. The point estimate of the population mean is _____. The margin of error for the confidence interval is _____.

Answer #1

Given confidence interval is (20 , 30)

We express confidence interval in terms of sample mean and margin of error E as

( - E , + E)

Comparing this interval with given interval in question we get,

- E = 20 and + E = 30

Solve these two equations by adding together.

- E + + E = 20 + 30

2 = 50

**
= 25**

Put this value of in equation + E = 30 and solve for E

25 + E = 30

**E = 5**

Sample mean is point estimate of population mean.

Therefore,

Point estimate of population mean is 25.

The margin of error for the confidence interval is 5

Determine the point estimate of the population mean and margin of
error for the confidence interval with lower
bound 29 and upper bound: 45 .

determine the point estimate of the population proportion, the
margin of error for the following confidence interval, and the
number of individuals in the sample with the specified
characteristics, x, for the sample size provided.
Lower bound=0.365
upper bound=0.835
n=1200
The point estimate of the population is:
The margin of error is:
The number of individuals in the sample with the specified
characteristic is:

Determine the point estimate of the population proportion, the
margin of error for the following confidence interval, and the
number of individuals in the sample with the
specifiedcharacteristic, x, for the sample size provided.
Lower bound=0.507,
upper bound=0.903,
n=1000
The margin of error is _____.

Determine the point estimate of the population proportion, the
margin of error for the following confidence interval, and the
number of individuals in the sample with the specified
characteristic, x, for the sample size provided.
Lower bound=0.507,
upper bound=0.903,
n=1000
The point estimate of the population proportion is _____.

Determine the point estimate of the population proportion,the
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number of individuals in the sample with the specified
characteristic, x, for the sample size provided. Lower bound=0.691,
upper bound=0.891, n=1000. The number of individuals in the sample
with the specified characteristic is? Round to the nearest integer
as needed

Determine the point estimate of the population proportion, the
margin of error for the following confidence interval, and the
number of individuals in the sample with the specified
characteristic, x, for the sample size provided.
Lower bound=0.132, upper bound=0.398, n=1000

Determine the point estimate of the population proportion, the
margin of error for the following confidence interval, and the
number of individuals in the sample with the specified
characteristic, x, for the sample size provided. Lower
bound=0.140, upper bound=0.550, n+1200

Determine the point estimate of the population? proportion, the
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number of individuals in the sample with the specified?
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Lower bound: .543 upper bound= .877 n=1500

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characteristic, x, for the sample size provided.
Lower bound=0.436
upper bound=0.694
n=1000

Determine the point estimate (p ^) of the population proportion
and the margin of error (E) for the given confidence interval.
Lower bound: 0.223, upper bound: 0.285

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