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You want to estimate the number of students who bring their lunch to school every day. Which of the following is the best sample for this situation?(1 point)
Responses
all members of the Math Club
all members of the Math Club
45 first-year students selected at random
45 first-year students selected at random
50 female students selected at random
50 female students selected at random
80 students selected at random during lunch
80 students selected at random during lunch would be the best sample for this situation as it is more representative of the entire student population and would provide a more accurate estimate of the number of students who bring their lunch to school every day.
A coffee shop owner is interested in determining what people think about the new coffee flavor. Which of the following is the population in this situation?(1 point)
Responses
100 random customers
100 random customers
the first 50 customers who bought the new coffee
the first 50 customers who bought the new coffee
all customers who bought the new coffee
all customers who bought the new coffee
all customers who did not buy the new coffee]
The population in this situation would be all customers who bought the new coffee, as the coffee shop owner wants to know what people think about the new coffee flavor. So, the opinion of all customers who bought the new coffee would be representative of the entire population's view.
So whats the right ansere
The correct answer is "all customers who bought the new coffee", as it represents the entire population of interest for the coffee shop owner's research question.
Tom wants to know the average number of musical instruments students in his school play. He used the school’s two band classes, consisting of a total of 48 students, as his representative sample. He concluded that students in his school play an average of three musical instruments. Is his conclusion valid?(1 point)
Responses
No, because he did not choose students randomly.
No, because he did not choose students randomly.
Yes, because all members of the sample play at least one musical instrument.
Yes, because all members of the sample play at least one musical instrument.
Yes, because the sample includes both males and females who play musical instruments.
Yes, because the sample includes both males and females who play musical instruments.
No, because his representative sample is too large.
No, because his representative sample is too large.
Tom's conclusion may not be valid because he did not choose students randomly. The band classes may not be a representative sample of the entire student population, especially if some students in the school do not take band classes or they may be more musically inclined. Therefore, his findings may not be generalizable to the entire school. The correct answer is "No, because he did not choose students randomly."
SO what is the correct one
The correct answer is "No, because he did not choose students randomly."
A school principal wants to know the average number of extracurricular activities students in her school are involved in. She assigned each student a number from 1 to 415. Using a random number generator, she selected 200 students to be part of the sample. She concluded that students are involved in an average of two extracurricular activities. Is the principal’s conclusion valid?(1 point)
Responses
Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough.
Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough.
Yes, because only those who have extracurricular activities were included in the sample.
Yes, because only those who have extracurricular activities were included in the sample.
No, because not all students in the sample have extracurricular activities.
No, because not all students in the sample have extracurricular activities.
No, because 200 students in the sample is too large.
No, because 200 students in the sample is too large.
The principal's conclusion appears to be valid because she chose the sample randomly using the random number generator. Additionally, the sample size of 200 seems sufficiently large to represent the student population. Therefore, the correct answer is "Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough."
Whats the correct one
The correct answer is "Yes, because every student had an equal chance to be part of the sample. The sample size also appears to be large enough."
THX
You're welcome! If you have any more questions, feel free to ask.
What is the unit 5 lesson 5 art b 7 questions
I'm sorry, as an AI language model, I don't have access to specific course or assignment information, could you please provide more context or details?
The dot plots show the weights of randomly selected cats and small dogs in different households. Based on an informal assessment of the visual overlap of these distributions, which animal has the least variability in their weights? Why?
I'm sorry, I cannot see the dot plots that you mentioned, so I cannot provide a definitive answer. However, if there is less overlap between the dots on one of the plots, it would indicate that there's less variability in the weights of the animals from that group. Therefore, based on an informal assessment of the visual overlap of these distributions, the animal with the least variability in their weights would be the one whose dot plot shows less overlap. This may indicate that the weights of the cats or small dogs are more consistent across different households.
Comparing Data Distributions Quick Check
1 of 51 of 5 Items
Question
Use the image to answer the question.
An illustration shows two sets of dot plots. One is titled Weight in Pounds, Cats and the other is Weight in Pounds, Small Dogs. The plots are shown as an abacus-like representation with dots in a vertical row over each number on a number line. For Cats, a number line with arrows on both ends ranges from 9 to 13 in increments of 1. There is 1 dot above 9, 2 dots above 10, 4 dots above 11, 2 dots above 12, and one dot above 13. For Small Dogs, a number line with arrows on both ends ranges from 8 to 15 in increments of 1. There is 1 dot above 8, 2 dots above 9, 4 dots above 10, 2 dots above 11, 2 dots above 12, 2 dots above 13, 1 dot above 14, and 1 dot above 15.
The dot plots show the weights of randomly selected cats and small dogs in different households. Based on an informal assessment of the visual overlap of these distributions, which animal has the least variability in their weights? Why?
(1 point)
Responses
Cats, because the range of their weights is greater than that of small dogs.
Cats, because the range of their weights is greater than that of small dogs.
Small dogs, because the range of their weights is greater than that of cats.
Small dogs, because the range of their weights is greater than that of cats.
Small dogs, because the range of their weights is less than that of cats.
Small dogs, because the range of their weights is less than that of cats.
Cats, because the range of their weights is less than that of small dogs.
Cats, because the range of their weights is less than that of small dogs.
The animal with the less variability in their weights would have dots that are less spread out and closer together on the dot plot. From the information given, it appears that small dogs have the more compact distribution, which means they have less variability in their weights when compared to cats. Therefore, the correct answer is "Small dogs, because the range of their weights is less than that of cats."
Which on is right 1 2 3 4
The correct answer is "Small dogs, because the range of their weights is less than that of cats." which is option 3.
Comparing Data Distributions Quick Check
2 of 52 of 5 Items
Question
Use the image to answer the question.
An illustration shows two sets of dot plots. One is titled Weight in Pounds, Cats and the other is Weight in Pounds, Small Dogs. The plots are shown as an abacus-like representation with dots in a vertical row over each number on a number line. For Cats, a number line with arrows on both ends ranges from 9 to 13 in increments of 1. There is 1 dot above 9, 2 dots above 10, 4 dots above 11, 2 dots above 12, and one dot above 13. For Small Dogs, a number line with arrows on both ends ranges from 8 to 15 in increments of 1. There is 1 dot above 8, 2 dots above 9, 4 dots above 10, 2 dots above 11, 2 dots above 12, 2 dots above 13, 1 dot above 14, and 1 dot above 15.
The dot plots show the weights of randomly selected cats and small dogs in different households. What is the difference between the modal weights of cats and small dogs?
(1 point)
Responses
1 pound
1 pound
The modal weights are the same for cats and small dogs.
The modal weights are the same for cats and small dogs.
3 pounds
3 pounds
0.13 pounds
To find the difference between the modal weights of cats and small dogs, we need to identify the modes (the values with the highest frequency) of both dot plots. From the given information, it appears the mode of both is 11 pounds. Therefore, the correct answer is "The modal weights are the same for cats and small dogs." which is option 2.
which one is correct
The correct answer is "The modal weights are the same for cats and small dogs." which is option 2.
The data shows the number of seconds it took two randomly selected groups to thread a needle. Compare the measures of center and variability of these data sets.
Student Group A: 56, 14, 26, 28, 29, 45, 32, 80, 3, 10
Student Group B: 27, 24, 18, 19, 5, 16, 22, 10, 6, 20
Which of the following statements about these data sets is false?
(1 point)
Responses
The median time taken by members of Group A to thread a needle is higher than that of members of Group B.
The median time taken by members of Group A to thread a needle is higher than that of members of Group B.
The mean time taken by Group A is higher than that of Group B.
The mean time taken by Group A is higher than that of Group B.
The ranges of the time taken by Group A and Group B are the same.
The ranges of the time taken by Group A and Group B are the same.
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The false statement about these data sets is "The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B."
Based on the given data, we can see that the range of the time taken by Group A is higher than that of Group B, which indicates greater variability in Group A. However, the amount of variability is not the same as the range. Therefore, option 4 is false.
which is correct
The correct answer is "The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B." which is option 4.
Two fertilizers are applied to randomly selected potato plants. After several weeks, the potatoes are weighed. The weights in kilograms are as follows. Which fertilizer is generally more effective?
Fertilizer A: 27, 20, 16, 18, 22, 19, 23, 21, 17, 19
Fertilizer B: 28, 19, 18, 21, 24, 20, 25, 27, 29, 21
(1 point)
Responses
Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.
Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.
Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.
Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.
Fertilizers A and B are equally effective, because the ranges of the weights of the potatoes are the same.
Fertilizers A and B are equally effective, because the ranges of the weights of the potatoes are the same.
Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.
Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.
To determine which fertilizer is generally more effective, we need to compare the measures of center and variability of both groups of potato weights.
From the given data, we can see that the mean and median weights of the potatoes treated with fertilizer B are higher than those treated with fertilizer A. Therefore, option 1 is correct, and the answer is "Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher."
What economic benefit did the Panama Canal afford Washington?
A. It provided for faster shipment of goods produced in Washington.
B. It encouraged more people to move westward and settle in Washington.
C. It expanded Washington’s boundaries to the south and to the east.
D. It helped West Coast states like Washington secure peace with neighboring nations.
A. It provided for faster shipment of goods produced in Washington.
A propaganda poster shows warships protecting a cargo ship from a submarine attack. The poster reads, "Invest in the Victory Liberty Loan"
Use the image to answer the question.
In what way does the image show that people in Washington contributed to World War I?
A. by buying bonds to fund the war effort
B. by growing and packaging food goods
C. by manufacturing necessary supplies
D. by serving as nurses and doctors
A. by buying bonds to fund the war effort.
Question 3 of 5
Allied demand for what resources and goods spurred economic activity in Washington? Select all that apply.
A. airplanes
B. cotton
C. engine parts
D. lumber
E. oil
F. ships
G. textiles
H. trenches
I. U-boats
A. airplanes, C. engine parts, D. lumber, E. oil, and F. ships
you can only choose three
Based on the demand for resources and goods, the most likely choices would be A. airplanes, C. engine parts and F. ships.
Why did labor unions have more influence during World War I?
A. Industry could not afford to risk work stoppages.
B. Competition for trade led to more jobs for workers.
C. Labor regulations relaxed to increase production.
D. The demand for goods drove up workers’ wages.
A. Industry could not afford to risk work stoppages.
The Wobblies in Washington appealed the most to what type of workers? Select two.
A. farmers
B. loggers
C. miners
D. ranchers
E. servants
F. veterans
B. loggers and C. miners
The data shows the number of miles run per week by randomly selected students from two different classes. Find the difference between the medians. Which class has a higher median? By how much?
Class 1: 6, 8, 10, 11, 14, 4, 5, 8, 2, 7, 7, 5, 10, 12, 11
Class 2: 6, 4, 5, 6, 7, 8, 12, 9, 10, 11, 5, 8, 7, 4, 10
(1 point)
Responses
Class 2 has a higher median than Class 1 by 1 mile.
Class 2 has a higher median than Class 1 by 1 mile.
Class 2 has a higher median than Class 1 by 0.5 mile.
Class 2 has a higher median than Class 1 by 0.5 mile.
Class 1 has a higher median than Class 2 by 1 mile.
Class 1 has a higher median than Class 2 by 1 mile.
Class 1 has a higher median than Class 2 by 0.5 mile.
Class 1 has a higher median than Class 2 by 0.5 mile.
To find the difference between the medians of Class 1 and Class 2, we first need to find the median of each class by ordering the values and finding the middle value(s).
For Class 1, the data set in order is: 2, 4, 5, 5, 6, 7, 7, 8, 8, 10, 10, 11, 11, 12, 14. The median of Class 1 is 8.
For Class 2, the data set in order is: 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 10, 11, 12. The median of Class 2 is also 8.
Since both Class 1 and Class 2 have the same median, the difference between the medians is 0. Therefore, the correct answer is "Class 1 has a higher
The data shows the number of seconds it took two randomly selected groups to thread a needle. Compare the measures of center and variability of these data sets.
Student Group A: 56, 14, 26, 28, 29, 45, 32, 80, 3, 10
Student Group B: 27, 24, 18, 19, 5, 16, 22, 10, 6, 20
Which of the following statements about these data sets is false?
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The ranges of the time taken by Group A and Group B are the same.
The ranges of the time taken by Group A and Group B are the same.
The mean time taken by Group A is higher than that of Group B.
The mean time taken by Group A is higher than that of Group B.
The median time taken by members of Group A to thread a needle is higher than that of members of Group B.
The data shows the number of seconds it took two randomly selected groups to thread a needle. Compare the measures of center and variability of these data sets.
Student Group A: 56, 14, 26, 28, 29, 45, 32, 80, 3, 10
Student Group B: 27, 24, 18, 19, 5, 16, 22, 10, 6, 20
Which of the following statements about these data sets is false?
(1 point)
Responses
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The amount of variability of the time taken by Group A to thread a needle is higher than the amount of variability of the time taken by Group B.
The ranges of the time taken by Group A and Group B are the same.
The ranges of the time taken by Group A and Group B are the same.
The mean time taken by Group A is higher than that of Group B.
The mean time taken by Group A is higher than that of Group B.
The median time taken by members of Group A to thread a needle is higher than that of members of Group B.
The median time taken by members of Group A to thread a needle is higher than that of members of Group B.
Two fertilizers are applied to randomly selected potato plants. After several weeks, the potatoes are weighed. The weights in kilograms are as follows. Which fertilizer is generally more effective?
Fertilizer A: 27, 20, 16, 18, 22, 19, 23, 21, 17, 19
Fertilizer B: 28, 19, 18, 21, 24, 20, 25, 27, 29, 21
(1 point)
Responses
Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.
Fertilizer B is generally more effective, because the mean and median weights of the potatoes that were treated with it are higher.
Fertilizers A and B are equally effective, because the ranges of the weights of the potatoes are the same.
Fertilizers A and B are equally effective, because the ranges of the weights of the potatoes are the same.
Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.
Fertilizers A and B are both ineffective, because there is no difference in the ranges of the weights of the potatoes.
Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.
Fertilizer A is generally more effective, because the mean and median weights of the potatoes treated with it are higher.
Use the image to answer the question.
An illustration shows two sets of dot plots. One is titled Movie 1 and the other is Movie 2. The plots are shown as an abacus-like representation with dots in a vertical row over each number on a number line. For Movie 1, a number line with arrows on both ends ranges from 17 to 43 in increments of 1. There is 1 dot above 17, 18, 21, 22, 25, 26, 28, 29, 32, 33, 35, 36, 38, 40, and 43. There are 2 dots above 23 and 3 dots above 20. For Movie 2, the number line ranges from 24 to 50 in increments of 1. There is 1 dot above 25, 28, 32, 35, 36, 42, 43, 45, 47, 48, and 50. There are 2 dots above 30, 34, and 37, and 3 dots above 40.
The dot plots show the ages, in years, of people watching two movies at a local theater. Find the median age of the people who watched each movie.
(1 point)
The median age of the people who watched Movie 1 is
.
The median age of the people who watched Movie 2 is
.
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