STATISTICS Math 221

Question 1 2 / 2 pts (CO 2) A random number generator is used to select a number from 1 to 100. What is the probability of selecting an odd number? 0.077 0.050Correct! 0.500 0.250 Question 2 2 / 2 pts (CO 2) What is the sample space of rolling two four-sided die? 1, 2, 3, 4Correct! (1,2)(1,3)(1,4)(2,2)(2,3)(2,4)(3,4)(4,4) (1, 1, 2, 2, 3, 3, 4, 4) (1,1)(2,2)(3,3)(4,4) Question 3 0 / 2 pts (CO 2) Consider the table below Response (number of cats owned) Frequency None 659 One 329 Two 52 Three 13 Fo...

Question 1 2 / 2 pts A recent survey of the alumni of a university indicated that the average salary of 10,000 of its 200,000 graduates was $130,000. The $130,000 would be considered a: Population Parameter Sample Statistic IncorrectQuestion 2 0 / 2 pts A recent survey of the alumni of a university indicated that the average salary of 10,000 of its 200,000 graduates was $130,000. The 10,000 would be considered a: Population Parameter Sample Statistic Question 3 2 / 2 pts Based ...

Question 1 2 / 2 pts A student believes that there is a 90% probability of getting an A on the next test. This would be considered: Empirical probability Manufactured probability Subjective probability Classical probability Question 2 2 / 2 pts Given the following information, find the probability that a randomly selected student will be tall, but not very tall. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21 50.5% 39.4% 10.1% 49.5% IncorrectQuestion...

Let x represent the number of pets in pet stores. This would be considered what type of variable: Discrete Nonsensical Lagging Continuous Flag this Question Question 22 pts Let x represent sheets of paper in a package. This would be considered what type of variable: Discrete Continuous Inferential Distributed Flag this Question Question 32 pts Consider the following table. Age Group Frequency 18-29 9831 30-39 7845 40-49 6869 50-59 6323 60-69 5410 70 and over 5279 If you c...

Question 1 2 / 2 pts Let x represent the height of first graders in a class. This would be considered what type of variable: Discrete Continuous Nonsensical Lagging Question 2 2 / 2 pts Let x represent the height of corn in Oklahoma. This would be considered what type of variable: Continuous Discrete Inferential Distributed IncorrectQuestion 3 0 / 2 pts Consider the following table. Age Group Frequency 18-29 9831 30-39 7845 40-49 6869 50-59 6323 60-69 5410 70 and over 52...

Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency 18-29 983 30-39 784 40-49 686 50-59 632 60-69 541 70 and over 527 If you created the probability distribution for these data, what would be the probability of 30-39? 0.189 0.237 0.425 0.165 Question 2 2 / 2 pts (CO 4) Consider the following table of hours worked by part-time employees. These employees must work in 5 hour blocks. Weekly hours worked Probability 5 0.06 15 0.61 20 0.18 25 0.15 Fin...

Calculating Binomial Probabilities NOTE: For question 1, you will be using the same data file your instructor gave you for the Week 2 Lab. 1. Using the data file from your instructor (same one you used for the Week 2 Lab), calculate descriptive statistics for the variable (Coin) where each of the thirty-five students in the sample flipped a coin 10 times. Round your answers to three decimal places and type the mean and the standard deviation in the grey area below. Mean: 3.886 Standard d...

Short Answer Writing Assignment All answers should be complete sentences. We need to find the confidence interval for the SLEEP variable. To do this, we need to find the mean and standard deviation with the Week 1 spreadsheet. Then we can the Week 5 spreadsheet to find the confidence interval. First, find the mean and standard deviation by copying the SLEEP variable and pasting it into the Week 1 spreadsheet. Write down the mean and the sample standard deviation as well as the count. Open...

Question 1 2 / 2 pts (CO6) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? (5.74, 5.90) (5.73, 5.87) (5.72, 5.88) Correct! (5.71, 5.89) Question 2 0 / 2 pts (CO6) If a confidence interval is given from 8.54 to 10.21 and the mean is known to be 9.375, what is the maximum erro...