1. What does it mean for a sample to be representative?

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orchestra answered 2 years ago

Describe the difference between a "population" and a "sample." What is a "representative sample" 1 What...

Describe the difference between a "population" and a "sample." What is a "representative sample" 1 What is the best way to achieve representativeness in a sample?

The one-sample z-test and the one-sample t-test both test if a sample mean is representative of...

The one-sample z-test and the one-sample t-test both test if a sample mean is representative of a population. What is the difference between these two tests?

1. In Java, what does the last line mean? What does scan.nextLine(); mean?

1. In Java, what does the last line mean? What does scan.nextLine(); mean?import java.util.Scanner;Scanner scan = new Scanner (System.in);message = scan.nextLine();2. Assuming that a Random object has been created called generator, what is the range of the result of each of the following expressions? Also, do each example using nextFloat()•generator.nextInt(20)•generator.nextInt(8) + 1•generator.nextInt(100) – 50

what does it mean if your sample mean is greater/or less than your population mean? obviously...

what does it mean if your sample mean is greater/or less than your population mean? obviously I have to reject the null for both circumstances but is there anything I can conclude about the population?

A research team takes the weights of what they believe to be a representative sample of...

A research team takes the weights of what they believe to be a representative sample of 30 adult female great whites. They find that the sample has a mean weight of 2050 pounds and a standard deviation of 220 pounds. a.Find a 99% confidence interval for the mean weight of all adult female great whites. b.Old statistics books used to say that if a sample size was at least 30, students could use a normal distribution instead of a t-distribution....

1. The process of random sampling guarantees that the sample selected will be representative of the...

1. The process of random sampling guarantees that the sample selected will be representative of the population. Is this statement true? Discuss. 2.Bob compares his SAT Verbal score of 400 to Marge's ACT Verbal score of 20. "I beat you," he exclaims. "My score is 20 times your score!" Although his multiplication is good, his logic is faulty. Explain why. NORMAL DISTRIBUTION QUESTION

What does it mean to say that we are going to use a sample to draw...

What does it mean to say that we are going to use a sample to draw an inference about a population? Why is a random sample so important for this process? If we wanted a random sample of students in the cafeteria, why couldn’t we just choose the students who order Diet Pepsi with their lunch? Comment on the statement, “A random sample is like a miniature population, whereas samples that are not random are likely to be biased.” Why...

What does it mean when a cost-capacity factor is less than 1? What does it mean...

What does it mean when a cost-capacity factor is less than 1? What does it mean when it is greater than 1?

is the fossil record a representative sampling, or is it a selective sample? what would bias...

is the fossil record a representative sampling, or is it a selective sample? what would bias which species would fossilize?

1. What does the word “marginal” mean? 2. What does the phrase “marginal analysis” mean? 3....

1. What does the word “marginal” mean? 2. What does the phrase “marginal analysis” mean? 3. What does marginal revenue mean? 4. What does marginal cost mean? 5. What does marginal profit mean? How are marginal revenue and marginal cost related to marginal profit? 6. Recall that profit is like a hill; it goes up and then it goes down. Our goal as a firm is to choose the value of Q that gets us to the top of the...

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