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![=PC (13-15) < 2< (2450)] => PC -0.25 <2<1:125) 5 p [241125] - P(2) -0.25) ( now use a score table) → 0.8686 - 0.4013 = 0.4673](http://img.homeworklib.com/questions/b0604570-34b2-11eb-a522-6f8f0ac2aba6.png?x-oss-process=image/resize,w_560)
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Cindy is often late for work. Assume that the number of minutes that she is late...
The number of minutes late that a Greyhound bus arrives at the downtown Cleveland terminal from...
The number of minutes late that a Greyhound bus arrives at the downtown Cleveland terminal from the Indianapolis terminal is normally distributed with a mean of 15.4 minutes and a standard deviation of 10.8 minutes. A survey research firm will take a random sample of 36 of these Indianapolis-to-Cleveland bus trips and record how many minutes late each trip is. Part 1 Based on a sample size of 36 bus trips, the probability that the sample mean minutes late will...
CASE STUDY Your co-worker, Linda Evans, is often 5 to 10 minutes late for work. She...
CASE STUDY Your co-worker, Linda Evans, is often 5 to 10 minutes late for work. She has difficulty completing her assignments. You see her walk by a patient's room when his call light is on. She tells you: "He is not my patient, and I am too busy to stop and answer the call light." 3. Is Linda practicing good work ethics? Explain. Answer the following questions: 1. How might Linda's actions affect the quality of provided to the patient?...
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes....
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is 37.7 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 6.7 minutes. Use Appendix B.3. What percent of the New York City commutes are for less than 27 minutes? (Round your intermediate calculations and final answer to...
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes....
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is 38.9 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.9 minutes. Use Appendix B.3. What percent of the New York City commutes are for less than 30 minutes? (Round your intermediate calculations and final answer to...
a. Time to finish a quiz in minutes follows a normal distribution with mean 6 and...
a. Time to finish a quiz in minutes follows a normal distribution with mean 6 and standard deviation .7. A student took 4.8 minutes. What is this student’s z-score? b. Time to finish a quiz in minutes follows a normal distribution with mean 6 and standard deviation .7. What proportion of students complete the quiz in less than 5.2 minutes? Use the normalcdf command on your calculator with 6 as the mean, .7 as the standard deviation, a very large negative...
In a random sample of 8 people, the mean commute time to work was 33.5 minutes...
In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.4 minutes. A 98% confidence interval using thet-distribution was calculated to be (25.7,41.3). After researching commute times to work, it was found that the population standard deviation is 8.6 minutes. Find the margin of error and construct a 98% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare the...
The weights of newborn baby boys born at a local hospital are believed to have a...
The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 4081 grams and a standard deviation of 575 grams. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be between 4828 and 5001 grams. Round your answer to four decimal places. Answer Point Tables Keypad Keyboard Shortcuts If you would like to look up the value...
in a random sample of 8 people, the mean commute time to work was 36.5 minutes...
in a random sample of 8 people, the mean commute time to work was 36.5 minutes and the standard deviation was 7.4 minutes. A 90% confidence interval using the t-distribution was calculated to be (31.5,41.5). After researching commute times to work, it was found that the population standard deviation is 9.3 minutes. find the margin of error and construct a 90% confidence interval using normal distribution with the appropriate calculations for a standard deviation that is known. compare the results....
In a random sample of 8 people, the mean commute time to work was 33.5 minutes...
In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7 4 minutes A 90% confidence interval using the t-distribution was calculated to be (28.5,38.5). After researching commute times to work, it was found that the population standard deviation is 9 5 minutes Find the margin of error and construct a 90% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is...
An automobile manufacturer claims that their car has a 56.7 miles/gallon (MPG) rating. An independent testing...
An automobile manufacturer claims that their car has a 56.7 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this car. After testing 14 cars they found a mean MPG of 56.6 with a standard deviation of 1.1. Is there sufficient evidence at the 0.1 level that the cars underperform the manufacturer's MPG rating? Assume the population distribution is approximately normal. Step 1 of 5: State the null and alternative hypotheses. Answer 2 Points...
CASE STUDY Your co-worker, Linda Evans, is often 5 to 10 minutes late for work. She has difficulty completing her assignments. You see her walk by a patient's room when his call light is on. She tells you: "He is not my patient, and I am too busy to stop and answer the call light." 3. Is Linda practicing good work ethics? Explain. Answer the following questions: 1. How might Linda's actions affect the quality of provided to the patient?...
The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 4081 grams and a standard deviation of 575 grams. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be between 4828 and 5001 grams. Round your answer to four decimal places. Answer Point Tables Keypad Keyboard Shortcuts If you would like to look up the value...
In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7 4 minutes A 90% confidence interval using the t-distribution was calculated to be (28.5,38.5). After researching commute times to work, it was found that the population standard deviation is 9 5 minutes Find the margin of error and construct a 90% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is...
An automobile manufacturer claims that their car has a 56.7 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this car. After testing 14 cars they found a mean MPG of 56.6 with a standard deviation of 1.1. Is there sufficient evidence at the 0.1 level that the cars underperform the manufacturer's MPG rating? Assume the population distribution is approximately normal. Step 1 of 5: State the null and alternative hypotheses. Answer 2 Points...
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