1/6/2023-Unit 8 Big Quiz
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Last updated over 2 years ago
15 questions
Note from the author:
https://www.desmos.com/testing/virginia/graphing
https://www.desmos.com/testing/virginia/graphing
Required
4
At the annual state tournament eight teams make the playoffs. How many different ways can first, second, and third place be awarded?
At the annual state tournament eight teams make the playoffs. How many different ways can first, second, and third place be awarded?
Required
4
Which of these situations involves a combination?
Which of these situations involves a combination?
Required
4
There are 7 movies that Christine wants to see over winter break. She only has time to see 4 of the movies. How many different groups of 4 movies are possible, if the order in which they are seen is not important?
There are 7 movies that Christine wants to see over winter break. She only has time to see 4 of the movies. How many different groups of 4 movies are possible, if the order in which they are seen is not important?
Required
4
A family reunion planning committee with 7 members plans to elect a president, a vice-president, and a treasurer. If each office is to be held by one person and no person can hold more than one office, in how many ways can those offices be filled?
A family reunion planning committee with 7 members plans to elect a president, a vice-president, and a treasurer. If each office is to be held by one person and no person can hold more than one office, in how many ways can those offices be filled?
Required
4
An airline is hiring 5 flight attendants. If 8 people apply for the job, how many different groups of 5 attendants can the airline hire?
An airline is hiring 5 flight attendants. If 8 people apply for the job, how many different groups of 5 attendants can the airline hire?
Required
4
A normally distributed data set has µ = 22 and σ = 1.5. What would be the value of an element of his data set with a z-score = 2?
A normally distributed data set has µ = 22 and σ = 1.5. What would be the value of an element of his data set with a z-score = 2?
Required
4
Which of the following is NOT a property of a normal distribution graph?
Which of the following is NOT a property of a normal distribution graph?
Required
4
A population of adult males had their heights measured. The heights were normally distributed. Approximately what percentage of the heights, rounded to the nearest whole number, are within one standard deviation of the mean?
A population of adult males had their heights measured. The heights were normally distributed. Approximately what percentage of the heights, rounded to the nearest whole number, are within one standard deviation of the mean?
Required
4
The height of a population is normally distributed with a mean height of 68” and a standard deviation of 3.2”. What is the percent of the population that is more than 65”?
round your % to the nearest hundreths place
The height of a population is normally distributed with a mean height of 68” and a standard deviation of 3.2”. What is the percent of the population that is more than 65”?
round your % to the nearest hundreths place
Required
4
In 1985, the average ACT score was 18 with a standard deviation of 6. Also in 1985, the average SAT score was 500 with a standard deviation of 100. Dr. Robertson took both tests in 1985 and scored a 26 on the ACT and a 620 on the SAT. Which statement accurately reflects the comparison of Dr. Robertson’s scores?
In 1985, the average ACT score was 18 with a standard deviation of 6. Also in 1985, the average SAT score was 500 with a standard deviation of 100. Dr. Robertson took both tests in 1985 and scored a 26 on the ACT and a 620 on the SAT. Which statement accurately reflects the comparison of Dr. Robertson’s scores?
Required
4
At a company, the data set containing the ages of the applicants for a particular job was normally distributed. The mean age of the applicants was 30 years old, and the standard deviation of the data set was 3.5 years. What is the percent of applicants that were 21 years old or younger?
round your percentage to the nearest tenths place
At a company, the data set containing the ages of the applicants for a particular job was normally distributed. The mean age of the applicants was 30 years old, and the standard deviation of the data set was 3.5 years. What is the percent of applicants that were 21 years old or younger?
round your percentage to the nearest tenths place
Required
4
A normally distributed data set of 500 values has a mean of 35 and a standard deviation of 7. What is the PROBABILITY that a value in the data set will fall between 42 and 46?
round your probability to the nearest tenths place
A normally distributed data set of 500 values has a mean of 35 and a standard deviation of 7. What is the PROBABILITY that a value in the data set will fall between 42 and 46?
round your probability to the nearest tenths place
Required
4
Looking at a sampling of Toyota Camrys, the average mpg is 23 and there is a standard deviation of 2. What will the miles per gallon for a Toyota Camry be when it has a z-score of 1.5?
Looking at a sampling of Toyota Camrys, the average mpg is 23 and there is a standard deviation of 2. What will the miles per gallon for a Toyota Camry be when it has a z-score of 1.5?
Required
4
A normally distributed data set of 600 values has a mean of 18.5 and a standard deviation of 3.25. What is the number of values in the data set that lie between 21 and 27?
round your answer to the tenths place
A normally distributed data set of 600 values has a mean of 18.5 and a standard deviation of 3.25. What is the number of values in the data set that lie between 21 and 27?
round your answer to the tenths place
Required
4
Use the emperical rule to select each answer:
Use the emperical rule to select each answer:
- 95%
- 68%
- 27%
- 99.7%
- 34%
- 13.5%
- _______percentage of values are within 1 standard deviation of the mean
- _______percentage of values are within 2 standard deviation of the mean
- ________percentage of values are within 3 standard deviation of the mean