I need help with the attached prob set. 22 questions. Business statistics course.8 multiple choice, 4 true/false questions, and 10 questions for which you must input a numerical response. Only need answers. Must be completed in 90 minutes.

Question 1 Sampling error is the difference between the statistic and the _______. Population proportion None of the above Population standard deviation Parameter Question 2 Which is not a continuous random variable? Number of births in a hospital on a given day Wingspan of an albatross Length of an ECO 250 lecture Hourly earnings of a call center employee in Boston Question 3 A _______ is a continuous distribution that is bell shaped and symmetrical around its mean. Normal probability distribution Binomial probability distribution Exponential probability distribution Uniform probability distribution Question 4 A _______ is a distribution in which the probability of any interval occurring is equal to any other interval with the same width. Exponential probability distribution Normal probability distribution Binomial probability distribution Uniform probability distribution Question 5 _______ are samples in which the probability of a population member being selected for the sample is not known. Nonprobability samples Cluster samples Probability samples Simple random sample Question 6 Suppose the population mean is 3, and you have the following sample: 3, 5, 7. What is the sampling error? 5 2 -2 7.5 Question 7 The empirical rule states if an distribution is symmetrical and bell-shaped, approximately _______, 95%, and 99.7% of its data values will fall within one, two, and three standard deviations above and below the mean, respectively. 68% 67% 69.9% 69% Question 8 The standard error of the mean is the Population standard deviation Sample standard deviation Standard deviation of samples Standard deviation of sample means Question 9 True or false: All normal distributions have the same shape and scale. True False Question 10 Parameters are values that are calculated from a sample, such as the mean or the median. True False Question 11 The Central Limit Theorem states that sample means, drawn from any population, will be normally distributed. True False Question 12 The standard normal distribution is a normal distribution with True =0 and =1. False Question 13 Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. Calculate the sampling error if the sample includes the first two ages (18, 25). Question 14 Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. Calculate the sampling error if the sample includes the first four ages (18, 25, 21, 23). Question 15 The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the mean of this distribution? Question 16 The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the standard deviation of this distribution? Question 17 The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require exactly 25 minutes to clean? Question 18 The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require less than 30 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). Question 19 The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require between 25 and 40 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). Question 20 The average number of miles driven on a full tank of gas in a Hyundai Veracruz before its lowfuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel exactly 300 miles on the next tank of gas? Question 21 The average number of miles driven on a full tank of gas in a Hyundai Veracruz before its lowfuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel less than 350 miles on the next tank of gas? Write you answer as a probability (i.e., a number between 0 and 1). Question 22 The average number of miles driven on a full tank of gas in a Hyundai Veracruz before its lowfuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel more than 310 miles on the next tank of gas? Write your answer as a probability (i.e., a number between 0 and 1). Practice: Question Sampling error is the difference between the statistic and the _______. Population proportion Parameter Population standard deviation None of the above Question Which is not a continuous random variable? Length of an ECO 250 lecture Wingspan of an albatross Hourly earnings of a call center employee in Boston Number of births in a hospital on a given day Question A _______ is a continuous distribution that is bell shaped and symmetrical around its mean. Exponential probability distribution Binomial probability distribution Uniform probability distribution Normal probability distribution Question A _______ is a distribution in which the probability of any interval occurring is equal to any other interval with the same width. Binomial probability distribution Exponential probability distribution Uniform probability distribution Normal probability distribution Question _______ are samples in which the probability of a population member being selected for the sample is not known. Nonprobability samples Probability samples Cluster samples Simple random sample Question Suppose the population mean is 3, and you have the following sample: 3, 5, 7. What is the sampling error? 2 7.5 -2 5 Question The empirical rule states if an distribution is symmetrical and bell-shaped, approximately _______, 95%, and 99.7% of its data values will fall within one, two, and three standard deviations above and below the mean, respectively. 69% 69.9% 68% 67% Question The standard error of the mean is the Sample standard deviation Standard deviation of sample means Population standard deviation Standard deviation of samples Question True or false: All normal distributions have the same shape and scale. True False Question Parameters are values that are calculated from a sample, such as the mean or the median. True False Question The Central Limit Theorem states that sample means, drawn from any population, will be normally distributed. True False Question The standard normal distribution is a normal distribution with =0 and True False Question Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. Calculate the sampling error if the sample includes the first two ages (18, 25). 0.5 Question Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. =1. Calculate the sampling error if the sample includes the first four ages (18, 25, 21, 23). 0.25 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the mean of this distribution? 35 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the standard deviation of this distribution? 8.6603 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require exactly 25 minutes to clean? 0 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require less than 30 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). 0.33333 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require between 25 and 40 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). 0.50 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel exactly 300 miles on the next tank of gas? 0 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel less than 350 miles on the next tank of gas? Write you answer as a probability (i.e., a number between 0 and 1). 0.8413 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel more than 310 miles on the next tank of gas? Write your answer as a probability (i.e., a number between 0 and 1). 0.6293 Practice: Question Sampling error is the difference between the statistic and the _______. Population proportion Parameter Population standard deviation None of the above Question Which is not a continuous random variable? Length of an ECO 250 lecture Wingspan of an albatross Hourly earnings of a call center employee in Boston Number of births in a hospital on a given day Question A _______ is a continuous distribution that is bell shaped and symmetrical around its mean. Exponential probability distribution Binomial probability distribution Uniform probability distribution Normal probability distribution Question A _______ is a distribution in which the probability of any interval occurring is equal to any other interval with the same width. Binomial probability distribution Exponential probability distribution Uniform probability distribution Normal probability distribution Question _______ are samples in which the probability of a population member being selected for the sample is not known. Nonprobability samples Probability samples Cluster samples Simple random sample Question Suppose the population mean is 3, and you have the following sample: 3, 5, 7. What is the sampling error? 2 7.5 -2 5 Question The empirical rule states if an distribution is symmetrical and bell-shaped, approximately _______, 95%, and 99.7% of its data values will fall within one, two, and three standard deviations above and below the mean, respectively. 69% 69.9% 68% 67% Question The standard error of the mean is the Sample standard deviation Standard deviation of sample means Population standard deviation Standard deviation of samples Question True or false: All normal distributions have the same shape and scale. True False Question Parameters are values that are calculated from a sample, such as the mean or the median. True False Question The Central Limit Theorem states that sample means, drawn from any population, will be normally distributed. True False Question The standard normal distribution is a normal distribution with =0 and True False Question Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. Calculate the sampling error if the sample includes the first two ages (18, 25). 0.5 Question Suppose you teach a small class composed of eight students with the following ages: 18, 25, 21, 23, 25, 22, 23, 19. =1. Calculate the sampling error if the sample includes the first four ages (18, 25, 21, 23). 0.25 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the mean of this distribution? 35 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the standard deviation of this distribution? 8.6603 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require exactly 25 minutes to clean? 0 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require less than 30 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). 0.33333 Question The time required for housekeeping to clean a hotel room for the next customer varies between 20 and 50 minutes and follows the continuous uniform distribution. What is the probability that the next room will require between 25 and 40 minutes to clean? Write your answer as a probability (i.e., a number between 0 and 1). 0.50 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel exactly 300 miles on the next tank of gas? 0 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel less than 350 miles on the next tank of gas? Write you answer as a probability (i.e., a number between 0 and 1). 0.8413 Question The average number of miles driven on a full tank of gas in a Honda GTI before its low-fuel light comes on is 320. Assume this milage follows the normal distribution with a standard deviation of 30 miles. What is the probability that, before the low-fuel light comes on, the car will travel more than 310 miles on the next tank of gas? Write your answer as a probability (i.e., a number between 0 and 1). 0.6293