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 groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 146 lb and standard deviation of 9.6 lbGroup B has a mean of 154 lb and standard deviation of 12.4 lb
We will answer: Is a 150 lb person more normal (not unusual) in group A or group B?
First calculate the z-score for the 150 lb person if they are in group A.
Enter the z-score 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 146 lb and standard deviation of 9.6 lb
Group B has a mean of 154 lb and standard deviation of 12.4 lb
We will answer: Is a 150 lb person more normal (not unusual) in group A or group B?
First calculate the z-score for the 150 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 146 lb and standard deviation of 9.6 lbGroup B has a mean of 154 lb and standard deviation of 12.4 lb
We will answer: Is a 150 lb person more normal (not unusual) in group A or group B?
Second calculate the z-score for the 150 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 146 lb and standard deviation of 9.6 lb
Group B has a mean of 154 lb and standard deviation of 12.4 lb
We will answer: Is a 150 lb person more normal (not unusual) in group A or group B?
Second calculate the z-score for the 150 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 146 lb and standard deviation of 9.6 lbGroup B has a mean of 154 lb and standard deviation of 12.4 lb
1. Compared to each group, is a 150 lb person closer to the average weight (more normal, not unusual) 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 146 lb and standard deviation of 9.6 lb
Group B has a mean of 154 lb and standard deviation of 12.4 lb
1. Compared to each group, is a 150 lb person closer to the average weight (more normal, not unusual) in group A or group B?
2. Explain how you know.
Select both answers below.
4
Two different groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 146 lb and standard deviation of 9.6 lbGroup B has a mean of 154 lb and standard deviation of 12.4 lb
In which group are the people further away from the mean?
Select one answer below.
Two different groups of people's weights were recorded so the groups could be compared.
Group A has a mean of 146 lb and standard deviation of 9.6 lb
Group B has a mean of 154 lb and standard deviation of 12.4 lb
In which group are the people further away from 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(40,000 miles, 3,000 miles).
If a tire had a z-score of -.46, 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(40,000 miles, 3,000 miles).
If a tire had a z-score of -.46, 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 -2.5.
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 -2.5.
What does this mean regarding this automobile model’s gas mileage?
6
Adult female Aussies weigh an average of 35 pounds with a standard deviation of 3.8 pounds. Adult female Staffies (American Staffordshire Terrier) weigh an average of 53.5 pounds with a standard deviation of 3.4 pounds. One statistics teacher owns a slightly overweight Aussie and a slightly overweight Staffie. The Aussie weighs 42 pounds, and the Staffie weighs 60 pounds.
Which dog is more overweight?
1. Use the 'show your work' section to show any calculations and explain why. (4 points)
2. Enter your answer in the space provided. (2 points)
Adult female Aussies weigh an average of 35 pounds with a standard deviation of 3.8 pounds.
Adult female Staffies (American Staffordshire Terrier) weigh an average of 53.5 pounds with a standard deviation of 3.4 pounds.
One statistics teacher owns a slightly overweight Aussie and a slightly overweight Staffie.
The Aussie weighs 42 pounds, and the Staffie weighs 60 pounds.
Which dog is more overweight?
1. Use the 'show your work' section to show any calculations and explain why. (4 points)
2. Enter your answer in the space provided. (2 points)