Question

1) Which of the following is NOT a categorical variable?                 a.            your age on...

1) Which of the following is NOT a categorical variable?

                a.            your age on your last birthday

                b.            your cell phone area code

                c.             your accounting class start time

                d.            your high school graduation year

A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be taken. The probability that the mean from that sample will be between 174 and 177 is

                a.            0.1359                   b.            0.8185                                  c.             0.3413                  d.            0.4772

A population has a mean of 53 and a standard deviation of 21. A sample of 49 observations will be taken. The probability that the sample mean will be greater than 48.05 is

                a.            0

                b.            .0495

                c.             .4505

                d.            None of the alternative answers is correct.

Four hundred registered voters were randomly selected asked whether gun laws should be changed. Three hundred said "yes," and one hundred said "no." The point estimate of the proportion in the population who will respond "yes" is

                a.            300

                b.            approximately 300

                c.             0.75

                d.            0.25

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A random sample of 25 observations is to be drawn from a population with the mean...
A random sample of 25 observations is to be drawn from a population with the mean of 40 and a standard deviation of 25. The probability that the mean of the sample will exceed 45 is: a.Not possible to compute b. 0.4772 c. 0.4207 d. 0.0228
Question 1. Which of the following is the CORRECT interpretation of a 95% confidence interval? a)...
Question 1. Which of the following is the CORRECT interpretation of a 95% confidence interval? a) There is a 95% probability that the interval contains the population value b) There is a 95% chance that the true population value is inside the interval c) if we sampled from a population repeatedly and created confidence intervals, 95% of those confidence intervals would contain the population mean d) We are 95% sure of the sample statistic Question 2. What is the mean...
A population has a mean of 50 and a standard deviation of 8. A sample of...
A population has a mean of 50 and a standard deviation of 8. A sample of 64 observations will be taken. The probability that the mean from that sample will be larger than 49 is a)0.1587 b)0.8413 c)0.0228 d)0.9772
15. Random samples of size 81 are taken from an infinite population whose mean and standard...
15. Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are (assuming infinite population) a. 200 and 18 b. 81 and 18 c. 9 and 2 d. 200 and 2 16. A population has a mean of 300 and a standard deviation of 18. A sample of 144 observations will be taken....
Suppose that 95% of all registered voters in a certain state favor banning the release of...
Suppose that 95% of all registered voters in a certain state favor banning the release of information from exit polls in presidential elections until after the polls in that state close. A random sample of 25 registered voters is to be selected. Let x = number of registered voters in this random sample who favor the ban. (Round your answers to three decimal places.) (a) What is the probability that more than 20 voters favor the ban? (b) What is...
For each of the following scenarios, state whether the normal distribution may be used and justify...
For each of the following scenarios, state whether the normal distribution may be used and justify your answer. If the normal distribution can't be used, state which distribution should be used instead. a. A random sample of size 15 is taken from a normal population with standard deviation 5. Find the probability that the sample mean is greater than 28. b. A random sample of size 15 is taken from a normal population with standard deviation 5. Find the probability...
According to U.S. News & World Report’s publication America’s Best Colleges, the aver­ age cost to...
According to U.S. News & World Report’s publication America’s Best Colleges, the aver­ age cost to attend the University of Southern California (USC) after deducting grants based on need is $27,175. Assume the population standard deviation is $7400. Suppose that a random sample of 60 USC students will be taken from this population. a. What is the value of the standard error of the mean? b. What is the probability that the sample mean will be more than $27,175? c....
The volume of milk in a jug is a variable which is:    [A]       qualitative       [B]      ...
The volume of milk in a jug is a variable which is:    [A]       qualitative       [B]       quantitative discrete    [C]   quantitative continuous Which of the following is not a measure of variability? [A]       variance           [B]       range               [C]       median            [D]       standard deviation The upper quartile of a large data set is 52. What percent of the observations are greater than 52? [A]       63%                 [B]       37%                 [C]       75%                 [D]       25% Scores on the final exam taken by 1200 students have...
Which of the following is TRUE? Select one: a. Mode is better than mean to measure...
Which of the following is TRUE? Select one: a. Mode is better than mean to measure the central tendency for categorical data. b. A data group with larger standard deviation has relatively greater variability than another data group with smaller standard deviation. c. Mean is always equal to median. d. Population variance is always equal to sample variance.
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the...
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the t-distribution approaches the: A. binomial distribution B. exponential distribution C. standard normal distribution D. None of the above 2. Given a t-distribution with 14 degrees of freedom, the area left of - 1.761 is A. 0.025 B. 0.05 C. 0.10 D. 0.90 E. None of the above 3. 100 samples of size fifty were taken from a population with population mean 72. The sample...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT