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Hi Scott how many more math classes will I have to endure, I really aperichate the help you have gave me and I am back statistiWeek 4 Quiz (Due Friday Jun 18, 2010)

Posted: Sun 06/13/2010 08:10 AM , by: Pam Bennett ([email protected] )

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University of Phoenix Material

Week Four Quiz

1. Which of the following statements are correct?

A normal distribution is any distribution that is not unusual.

The graph of a normal distribution is bell-shaped.

If a population has a normal distribution, the mean and the median are not equal.

The graph of a normal distribution is symmetric.

Using the 68-95-99.7 rule:

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities:

Suggest you make a drawing and label first…

Percentage of scores less than 100

Relative frequency of scores less than 120

Percentage of scores less than 140

Percentage of scores less than 80

Relative frequency of scores less than 60

Percentage of scores greater than 120

2. Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers).

If you have a body temperature of 99.00 °F, what is your percentile score?

Convert 99.00 °F to a standard score (or a z-score).

Is a body temperature of 99.00 °F unusual? Why or why not?

Fifty adults are randomly selected. What is the likelihood that the mean of their body temperatures is 97.98 °F or lower?

A person’s body temperature is found to be 101.00 °F. Is the result unusual? Why or why not? What should you conclude?

What body temperature is the 95th percentile?

What body temperature is the 5th percentile?

Bellevue Hospital in New York City uses 100.6 °F as the lowest temperature considered to indicate a fever. What percentage of normal and healthy adults would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6 °F is appropriate?cal reasoning, can you help? here it is

Posted: Sun 06/13/2010 08:10 AM , by: Pam Bennett ([email protected] )

Previous | Next

Red(High)

Yellow(Medium)

Blue(Low)

No Flag

Reply View/Print Flag Message Mark as unread

University of Phoenix Material

Week Four Quiz

1. Which of the following statements are correct?

A normal distribution is any distribution that is not unusual.

The graph of a normal distribution is bell-shaped.

If a population has a normal distribution, the mean and the median are not equal.

The graph of a normal distribution is symmetric.

Using the 68-95-99.7 rule:

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities:

Suggest you make a drawing and label first…

Percentage of scores less than 100

Relative frequency of scores less than 120

Percentage of scores less than 140

Percentage of scores less than 80

Relative frequency of scores less than 60

Percentage of scores greater than 120

2. Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers).

If you have a body temperature of 99.00 °F, what is your percentile score?

Convert 99.00 °F to a standard score (or a z-score).

Is a body temperature of 99.00 °F unusual? Why or why not?

Fifty adults are randomly selected. What is the likelihood that the mean of their body temperatures is 97.98 °F or lower?

A person’s body temperature is found to be 101.00 °F. Is the result unusual? Why or why not? What should you conclude?

What body temperature is the 95th percentile?

What body temperature is the 5th percentile?

Bellevue Hospital in New York City uses 100.6 °F as the lowest temperature considered to indicate a fever. What percentage of normal and healthy adults would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6 °F is appropriate?cal reasoning, can you help? here it is

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