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Lesson 5.6 Normal Distribution Calculations Practice cloned 2/21/2023

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Posljednje ažuriranje about 2 years ago
24 questions
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Pitanje 1
1.

The distribution of speed follows an approximately Normal distribution with a mean of 80 mph and a standard deviation of 7.7 mph.

Use the 'show your work' section to put in the Delorean speeds under the axis for the Normal Distribution Model.

Pitanje 2
2.

Give the notation for the Normal model using the Delorean Speed information above.

Use the format: N(mean, std dev)

Pitanje 3
3.

Using the 68-95-99.7 Rule & your flip book:

What percent of the runs will give the Delorean a speed greater than 87.7 mph?

THEN shade in the probability area you are calculating in the 'show your work area'.

Pitanje 4
4.

Using the 68-95-99.7 Rule & your flip book:

What percent of the runs will give the Delorean a speed between 64.6 mph and 87.7 mph?

THEN Shade in the probability area that you are calculating in the 'show your work' area.

Pitanje 5
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Pitanje 6
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Pitanje 7
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Pitanje 8
8.

High levels of cholesterol in the blood increase the risk of heart disease. For teenage boys, the distribution of blood cholesterol is approximately normal with mean μ = 151.6 milligrams of cholesterol per deciliter of blood (mg/dl) and standard deviation σ = 25 mg/dl.

What is the Normal model for this situation?

Use the format: N(mean, std. dev.)

Pitanje 9
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Pitanje 11
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Pitanje 12
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Pitanje 13
13.

6th grade STAAR scores were tabulated for Round Rock ISD, the normal model N(1142, 110) was appropriate for the data.

If a student scored 1040 on his STAAR test, what was his z-score?

Round your answer to three places past the decimal.

Pitanje 14
14.

6th grade STAAR scores were tabulated for Round Rock ISD, the normal model N(1142, 110) was appropriate for the data.

A student scored 1040 on his STAAR test, you just calculated his z-score.

What does this mean?

Pitanje 15
15.

What does the z-score mean?

Suppose that a Normal model described student scores in a history class.

Francisco has a standardized score (z-score) of +2.5.

This means that Francisco’s score...

Pitanje 16
16.
Pitanje 17
17.

The heights of Dutch men have a mean of 184 cm and standard deviation of 8 cm.

The heights of French men have a mean of 174 cm and a standard deviation is 7.1 cm.

A French man is 194 cm tall and a Dutch man is 204 cm tall.

What is the z-score for the French man? (round to two places past the decimal point)

Pitanje 18
18.

The heights of Dutch men have a mean of 184 cm and standard deviation of 8 cm.

The heights of French men have a mean of 174 cm and a standard deviation is 7.1 cm.

A French man is 194 cm tall and a Dutch man is 204 cm tall.

What is the z-score for the Dutch man? (round to three places past the decimal point)

Pitanje 19
19.

The heights of Dutch men have a mean of 184 cm and standard deviation of 8 cm.

The heights of French men have a mean of 174 cm and a standard deviation is 7.1 cm.

Who is taller compared to males in their country, a French man who is 194 cm tall

or a Dutch man who is 204 cm tall?

How do you know? Explain clearly using what we have discussed in class about z-scores.

Pitanje 20
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Pitanje 23
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Pitanje 24
24.

You just found the probability of randomly choosing a Dutch man over 203.8 cm tall.

Using the z-score and the probability, would you say this is an unusual height for a Dutch man?

Explain why or why not. Select both answers.