A population has a proportion equal to 0.30. Calculate the following probabilities with n=100. Find P(p ≥ 0.27).

0.6125

O 0.7422

0.8141

0.6841

Question 10

n-20

x = 4.33

5-3.50

The point estimate for the true population mean is:

O 3.50

O 4.33 + 1.638

4.33

1.638

In an application to estimate the mean number of miles that downtown employees commute to work roundtrip each day, the following information is

given:

Question 11

Question 12

n-20

The Olsen Agricultural Company has determined that the weight of hay bales is normally distributed with a mean equal to 80 pounds and a standard

deviation equal to 8 pounds. Based on this, what is the probability that the mean weight of the bales in a sample of n-64 bales will be between 78 and 82

pounds?

O 0.6346

0.9544

04772

0.0228

= 4.33

-3.50

If the desired confidence level is 95 percent. the appropriate critical value is:

t=2.093

O.7826

2 points

z=1.96

t=2.086

Question 13

2 points

in an application to estimate the mean number of miles that downtown employees commute to work roundtrip each day, the following information is

given:

A sample of 25 observations is taken to estimate a population proportion. The sampling distribution of sample proportion p is:

O approximately normal because is always normally distributed

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2 points

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2 points

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