The z-score represents.....

the amount of standard deviations a data value is above or below the mean.

the percentile the data value is above or below the mean.

the amount of standard deviations a data value is above or below the median.

the percent the data value is above or below the mean.

Which is NOT true about the standard normal distribution?

The mean is 0 and the standard deviation is 1.

In a Standard Distribution Curve, find the z-score for the lowest 7th percentile.

≈ − 1.48 \approx-1.48 ≈ − 1 . 4 8

≈ − 1.01 \approx-1.01 ≈ − 1 . 0 1

≈ − 2.05 \approx-2.05 ≈ − 2 . 0 5

≈ − 2.45 \approx-2.45 ≈ − 2 . 4 5

Suppose the amount of soda in a can is normally distributed; the mean is 16 oz and standard deviation is 0.4 oz. How much soda is in the heaviest 3% of cans?

≈ 16.75 o z \approx16.75\ oz ≈ 1 6 . 7 5 o z

≈ 16.97 o z \approx16.97\ oz ≈ 1 6 . 9 7 o z

≈ 16.45 o z \approx16.45\ oz ≈ 1 6 . 4 5 o z

≈ 16.30 o z \approx16.30\ oz ≈ 1 6 . 3 0 o z

Suppose the amount of soda in a can is normally distributed; the mean is 16 oz and standard deviation is 0.4 oz. How much soda is in the lightest 22% of cans?

≈ 15.69 o z \approx15.69\ oz ≈ 1 5 . 6 9 o z

≈ 15.21 o z \approx15.21\ oz ≈ 1 5 . 2 1 o z

≈ 15.03 o z \approx15.03\ oz ≈ 1 5 . 0 3 o z

≈ 14.99 o z \approx14.99\ oz ≈ 1 4 . 9 9 o z

What happens to the shape of a sampling distribution of sample means as n increases?

It becomes narrower and more normal.

It becomes narrower and bimodal.

It becomes wider and skewed right.

It becomes wider and more normal.

Math 117 Chapter 5 Review

9th - 12th Grade

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38 Qs

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Math 117 Chapter 5 Review

Quiz

•

Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Medium

•

CCSS

HSS.ID.A.4, HSS.MD.A.3, HSS.IC.B.4

Standards-aligned

Jennifer Griffeth

Used 6+ times

FREE Resource

38 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

6.2: Standard Normal Distribution (mean is 0 standard deviation is 1). For a randomly selected subject, find the probability of a score between 1.37 and 2.42.

0.078

0.785

0.223

0.023

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a data value has a negative z-score it means the data value is lower than the mean.

True

False

Maybe

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A data point that equals the mean has a z-score of what value?

-1

1.5

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the area under the standard normal curve where z < 2.42 .

.008

.992

.301

.862

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the area to the right of z= -1.02

.846

.782

.154

.523

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the the total area under the standard normal distribution curve?

100

0.5

Tags

CCSS.HSS.ID.A.4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?

0.6915

0.1762

0.8238

-0.93

Tags

CCSS.HSS.ID.A.4

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Math 117 Chapter 5 Review

38 questions

6.2: Standard Normal Distribution (mean is 0 standard deviation is 1). For a randomly selected subject, find the probability of a score between 1.37 and 2.42.

If a data value has a negative z-score it means the data value is lower than the mean.

A data point that equals the mean has a z-score of what value?

Find the area under the standard normal curve where z < 2.42 .

Find the area to the right of z= -1.02

What is the the total area under the standard normal distribution curve?

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have more than 7 accidents?

The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch.
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?

The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.

Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?

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Math 117 Chapter 5 Review

38 questions

6.2: Standard Normal Distribution (mean is 0 standard deviation is 1). For a randomly selected subject, find the probability of a score between 1.37 and 2.42.

If a data value has a negative z-score it means the data value is lower than the mean.

A data point that equals the mean has a z-score of what value?

Find the area under the standard normal curve where z < 2.42 .

Find the area to the right of z= -1.02

What is the the total area under the standard normal distribution curve?

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have less than 5 accidents?

The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What proportion of weeks would you expect to have more than 7 accidents?

The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch. If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?

The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15. Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch.
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?

The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.

Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?