Math221 week 5 - Study guides, Class notes & Summaries

1. Question:(CO 3) Consider the following table. If you created the probability distribution for these data, what would be the probability of 60-69? 2. Question:(CO 3) Consider the following table of hours worked by part-time employees. These employees must work in 5-hour blocks.Find the mean of this variable. 3. Question:(CO 3) Consider the following table. Find the variance of this variable. 4. Question:(CO 3) Consider the following table. Find the standard deviation of this variable. 5. Q...

1. Question: From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.69 with a population standard deviation of 3.23. What is the 95% confidence interval for the amount of time spent on administrative issues? 2. Question: If a confidence interval is given from 43.83 up to 61.97 and the mean is known to be 52.90, what is the margin of error? 3. Question: If a computer manufacturer needed a supplier that could produce parts ...

1. Question:From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.69 with a population standard deviation of 3.54. What is the 95% confidence interval for the amount of time spent on administrative issues? 2. Question:If a confidence interval is given from 43.85 to 61.95 and the mean is known to be 52.90, what is the margin of error? 3. Question:If a shirt manufacturer wanted to make shirts that fit most individuals, wha...

1. Question:From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 20.53 with a population standard deviation of 3.54. What is the 95% confidence interval for the amount of time spent on administrative issues? 2. Question:If a confidence interval is given from 43.83 up to 61.97 and the mean is known to be 52.90, what is the margin of error? 3. Question:If a grocery store purchases paper bags from a company, they want them ge...

1. Question:From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 20.53 with a population standard deviation of 3.23. What is the 95% confidence interval for the amount of time spent on administrative issues? 2. Question:If a confidence interval is given from 43.83 up to 61.97 and the mean is known to be 52.90, what is the margin of error? 3. Question:If a car manufacturer wanted lug nuts that fit nearly all the time, what ...

1. Question: Let x represent the number of cars in a parking lot. This would be considered what type of variable: 2. Question: Let x represent the height of corn in Oklahoma. This would be considered what type of variable: 3. Question: If you created the probability distribution for these data, what would be the probability of 40-49? 4. Question: Consider the following table.Find the mean of this variable. 5. Question: Consider the following table. Find the variance of this variable. 6. Que...

Joseph and Kandy when we develop a confidence interval (CI) we are computing a rangeofvalues that’s likely to include a population value with a certain degree of confidence. It isan interval that tells us that the population means lies between an upper and lowerinterval.What are commonly used confidence intervals? (Responses to the questionabove)

MATH221 Quiz Week 7 A Formulas Included Questions 1 (CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on persona 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? (5.72, 5.88) (5.73, 5.87) (5.74, 5.90) (5.71, 5.89) Question 2 (CO 4) If a confidence interval is given from 8.56 to 10.19 and the mean is known to be 9.375, what is the margin of e...