Unit 4 Day 10 Ch. 5 Normal Model Test Part #1
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Last updated over 4 years ago
7 questions
4
Two different groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lbGroup B has a mean of 132 lb and standard deviation of 8.2 lb
We will answer: Is a 130 lb person closer to the average weight (more normal) in group A or group B?
First calculate the z-score for the 130 lb person if they are in group A.
Enter the z-score below. Round to three places past the decimal point.
Two different groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lb
Group B has a mean of 132 lb and standard deviation of 8.2 lb
We will answer: Is a 130 lb person closer to the average weight (more normal) in group A or group B?
First calculate the z-score for the 130 lb person if they are in group A.
Enter the z-score below. Round to three places past the decimal point.
4
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lbGroup B has a mean of 132 lb and standard deviation of 8.2 lb
We will answer: Is a 130 lb person closer to the average weight (more normal) in group A or group B?
Second, calculate the z-score for the 130 lb person if they are in group B.
Enter your answer below. Round to three places past the decimal point.
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lb
Group B has a mean of 132 lb and standard deviation of 8.2 lb
We will answer: Is a 130 lb person closer to the average weight (more normal) in group A or group B?
Second, calculate the z-score for the 130 lb person if they are in group B.
Enter your answer below. Round to three places past the decimal point.
4
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lbGroup B has a mean of 132 lb and standard deviation of 8.2 lb
1. Compared to each group, is a 130 lb person closer to the average weight (more normal) in group A or group B?
2. Explain how you know.
Select both answers below.
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lb
Group B has a mean of 132 lb and standard deviation of 8.2 lb
1. Compared to each group, is a 130 lb person closer to the average weight (more normal) in group A or group B?
2. Explain how you know.
Select both answers below.
4
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lbGroup B has a mean of 132 lb and standard deviation of 8.2 lb
In which group are the people closer to the mean?
Select one answer below.
Two groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 128 lb and standard deviation of 11.4 lb
Group B has a mean of 132 lb and standard deviation of 8.2 lb
In which group are the people closer to the mean?
Select one answer below.
4
At Discount Tire they sell a variety of tires. A certain brand advertised their lifespan in miles follows a nearly normal distribution.Use the model: N(30,000 miles, 2,000 miles).
If a tire had a z-score of 1.83, how many miles did this tire last?
At Discount Tire they sell a variety of tires. A certain brand advertised their lifespan in miles follows a nearly normal distribution.
Use the model: N(30,000 miles, 2,000 miles).
If a tire had a z-score of 1.83, how many miles did this tire last?
4
Suppose that a Normal model describes fuel economy (miles per gallon) for automobiles and that a certain model has a standardized score (z-score) of +1.5.
What does this mean regarding this automobile model’s gas mileage?
Suppose that a Normal model describes fuel economy (miles per gallon) for automobiles and that a certain model has a standardized score (z-score) of +1.5.
What does this mean regarding this automobile model’s gas mileage?
6
Adult female Dalmatians weigh an average of 50 pounds with a standard deviation of 2.3 pounds.
Adult female Boxers weigh an average of 57.5 pounds with a standard deviation of 1.9 pounds.
One statistics teacher owns an underweight Dalmatian and an underweight Boxer. The Dalmatian weighs 44 pounds, and the Boxer weighs 52 pounds.
Which dog is more underweight?
1. Use the 'show your work' section to show your calculations and explain why. (4 points)
2. Enter your answer in the space provided. (2 points)
Adult female Dalmatians weigh an average of 50 pounds with a standard deviation of 2.3 pounds.
Adult female Boxers weigh an average of 57.5 pounds with a standard deviation of 1.9 pounds.
One statistics teacher owns an underweight Dalmatian and an underweight Boxer.
The Dalmatian weighs 44 pounds, and the Boxer weighs 52 pounds.
Which dog is more underweight?
1. Use the 'show your work' section to show your calculations and explain why. (4 points)
2. Enter your answer in the space provided. (2 points)