This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research > Sampling Distribution – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Sampling Distribution Quiz 2 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. According to de Moivre's Equation, in order to get an estimate that is three times more accurate than your old one, you need to collect ..... times as much data A) 27. B) 3. C) 9. D) 6. Show Answer Correct Answer: C) 9. 2. At a particular college, 78% of all students are receiving some kind of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true? A) 78% is a population and 72% is a sample. B) 72% is a population and 78% is a sample. C) 78% is a parameter and 72% is a statistic. D) 72% is a parameter and 78% is a statistic. Show Answer Correct Answer: C) 78% is a parameter and 72% is a statistic. 3. The mean and standard deviation of a population are 200 and 20, respectively. What is the probability of selecting 64 data values with a mean between 195 and 200? A) 1.5%. B) 0.5%. C) 48%. D) 41%%. Show Answer Correct Answer: C) 48%. 4. The average cost for a gallon of gasoline is $ 2.51 (source AAA.org) with a standard deviation of $ 0.42. These prices are strongly right-skewed. What is the shape of the sampling distribution if n = 49? A) Strongly left skewed. B) Strongly Right Skewed. C) Approximately Bell Shaped. D) Roughly Uniform. Show Answer Correct Answer: C) Approximately Bell Shaped. 5. According to a television commercial, 3 out of 4 dentists recommend Trident gum for patients who have dental work. A consumer magazine has surveyed 100 dentists to see if this claim is true. Which is closest to the probability that between 70 and 74 percent of the dentists recommend Trident? A) .2846. B) -.2846. C) .0762. D) .9238. Show Answer Correct Answer: A) .2846. 6. In a given population, the mean is 200 and the standard deviation is 20. If we take a sample of size 25, what is the mean of the sampling distribution? A) 16. B) 200. C) 4. D) 25. Show Answer Correct Answer: B) 200. 7. You need to use the Finite Correction Factor when the sample size is more than ..... of the population size, and you are selecting without replacement. A) 5%. B) 2%. C) 1%. D) 15%. Show Answer Correct Answer: A) 5%. 8. What effect does INCREASING the sample size have on a sampling distribution? A) Increasing the sample size makes the distribution wider. B) Increasing the sample size increases the area under the sampling distribution curve. C) No effect. D) Increasing the sample size makes the distribution narrower. Show Answer Correct Answer: D) Increasing the sample size makes the distribution narrower. 9. It is a probability distribution wherein the sample means obtained will form a frequency distribution and the corresponding probability distribution can be constructed. A) Normal Distribution. B) Discrete Probability Distribution. C) Standard Normal Distribution. D) Sampling Distribution. Show Answer Correct Answer: D) Sampling Distribution. 10. The mean distance an ASA student travels to school is 5.6 miles with a standard deviation of 1.7 miles. Mrs. Dugger finds the mean of her 4th period class-a randomly selected sample of 29 students. What is the probability that the mean of her class is more than 6 miles? A) P = 0.00. B) P = 0.1020. C) P = 0.8980. D) P = 1.27. Show Answer Correct Answer: C) P = 0.8980. 11. Which sample size for a sampling distribution will have the smallest standard deviation? A) N = 400. B) N = 200. C) N = 10. D) N = 1000. Show Answer Correct Answer: D) N = 1000. 12. The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true. What is the mean of the sampling distribution of p-hat? A) 0.44. B) 0.56. C) 0.4. D) 0.6. Show Answer Correct Answer: C) 0.4. 13. If the population is countable, we call it ..... A) Discrete. B) Infinite. C) Continuous. D) Finite. Show Answer Correct Answer: D) Finite. 14. The weight distribution of Unicorns is approximately normal with a mean of 1, 000 lbs. and a standard deviation of 25 lbs. What is the probability that the mean weight of 25 randomly selected unicorns is greater than 1010 pounds? A) 65.54%. B) 97.72%. C) 2.28%. D) 34.46%. Show Answer Correct Answer: C) 2.28%. 15. A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed. What is the probability that a randomly selected student is older than 16.5 years old? A) 0.864. B) 0.879. C) 0.121. D) None of these. Show Answer Correct Answer: C) 0.121. 16. Which of the following is the list of the sample means, if samples are as follow:5, 105, 155, 2010, 1510, 2015, 20 A) 555101015. B) 101520152020. C) 7.51012.512.51517.5. D) 7.51012.5131517. Show Answer Correct Answer: C) 7.51012.512.51517.5. 17. Identify the Sample: A) 20 customers. B) All customers. C) 8 customers. D) Dessert. Show Answer Correct Answer: A) 20 customers. 18. Which measure CANNOT have sampling distribution? A) Mean. B) Standard error. C) Standard deviation. D) Range. Show Answer Correct Answer: B) Standard error. 19. The weights of the eggs produced by a certain breed of hen are normally distributed with mean 65 grams and standard deviation of 5 grams. What is the probability that one egg selected at random from a hen house will weigh more than 68 grams? A) 0.9099. B) 0.0901. C) 0.2743. D) 0.7257. Show Answer Correct Answer: C) 0.2743. 20. Taxi fares in New York City are normally distributed with a mean fare of $ 22.50 and a standard deviation of $ 2.20. A tourism agency surveys 25 of its clients who have recently traveled to New York City to determine whether or not this information is accurate.Your best friend just got back from New York and says she had a taxi fare of $ 25.00. What is the z-score that would correspond to his/her taxi fare? A) -5.68. B) 1.14. C) -1.14. D) 5.68. Show Answer Correct Answer: B) 1.14. 21. Taxi fares in New York City are normally distributed with a mean fare of $ 22.50 and a standard deviation of $ 2.20. A tourism agency surveys 25 of its clients who have recently traveled to New York City to determine whether or not this information is accurate.The sample of 25 tourists reported an average taxi fare of $ 23.20. What is the z-score that corresponds to this amount? A) 1.59. B) -0.318. C) 0.318. D) -1.59. Show Answer Correct Answer: A) 1.59. 22. The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true. Calculate the standard deviation of the sampling distribution. A) 0.0118. B) 0.0119. C) 0.0117. D) 0.0116. Show Answer Correct Answer: D) 0.0116. 23. The sampling distribution of a statistic is ..... A) Using repeated samples and finding a probabilitity. B) The distribution of values taken by a statistic in all possible samples of the same sample size from the same population. C) The way that sample results differe from each other. D) The distribution of values in a sample of size n. Show Answer Correct Answer: B) The distribution of values taken by a statistic in all possible samples of the same sample size from the same population. 24. It is the numerical characteristic of a sample. A) Statistic. B) Parameter. C) Variance. D) Mean. Show Answer Correct Answer: A) Statistic. 25. A sample of the reading scores of 35 fifth-graders has a mean of 82. The standard deviation of the population is 15.Find the 90% confidence interval of the mean reading scores of all fifth-graders. A) 78 < $\mu$ < 86. B) 77 < $\mu$ <87. C) 203 < $\mu$ < 213. D) 202 < $\mu$ < 214. Show Answer Correct Answer: A) 78 < $\mu$ < 86. 26. If a sampling distribution of sample means has a sample size less than 30: A) The shape will be Normal. B) The shape will be between the shape of the population and Normal. C) The shape will not be Normal. D) There is no way we can detrmine the shape. Show Answer Correct Answer: B) The shape will be between the shape of the population and Normal. 27. Find the area under the standard normal curve to the right of z = 3.15. A) 0.1234. B) 0.9962. C) 0.0869. D) 0.0008. Show Answer Correct Answer: D) 0.0008. 28. It is estimated that 45% of the 10th grade class will go on the class trip this year. If you randomly choose 10 sophomores and ask them if they are going on the trip, could you use the Normal Approximation to predict these results? A) Yes, both np and nq are greater than 5. B) No, np is less than five. C) No, nq is less than five. D) Yes, either np or nq are greater than 5. Show Answer Correct Answer: B) No, np is less than five. 29. The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true. Of the poll respondents, 44% said they did attend church last week. Find the probability of obtaining a sample of 1785 adults in which 44% or more say they attended church last week if the newspaper's claim is true. A) 99%. B) 0.028 %. C) 4.4%. D) Conditions were not met, so you cannot calculate this. Show Answer Correct Answer: B) 0.028 %. 30. The mean and standard deviation of a population are 400 and 40, respectively. Sample size is 25. What is the mean of the sampling distribution? A) 40. B) 25. C) 8. D) 400. Show Answer Correct Answer: D) 400. ← PreviousNext →Related QuizzesPaper 1 QuizzesUgc Net QuizzesSampling Distribution Quiz 1Sampling Distribution Quiz 3Sampling Distribution Quiz 4Reporting And Thesis Writing QuizResearch And Scientific Methods QuizResearch Concept QuizResearch Design QuizResearch Ethics Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books