Suppose that the travel time from your home to your office is normally distributed with a mean of 40 minutes and standard deviation of 7 minutes
suppose that the travel time from your home to your office is normally distributed with mean 40 min and standard deviation 7 min. if you want to be 90% certain that you will not be late for an appointment at 1, what is the latest time that you should leave home?
The travel time between two cities is approximately normally distributed with a standard deviation of 2.25 minutes. You travel 12 times between the two cities, and it takes an average (mean) of 28 minutes. (a) Find a 99% confidence interval for the true mean travel time. (b) If you want for the confidence interval to be no wider than +0.95 minutes, what level of confidence would you need to use?
Suppose Abby tracks her travel time to work for 60 days and determines that her mean travel time, in minutes, is 35.6. Assume the travel times are normally distributed with a standard deviation of 10.3 min. Determine the travel time ? such that 26.11% of the 60 days have a travel time that is at least ?.
1. Suppose you're back at home and you need to schedule an appointment with your internet provider to have someone come over and fix it. You have to be at home to let the person in. If you miss the serviceperson, you have (a) Although you're given an exact time (3:00pm), the company tells you that the serviceperson could show up Let X - the arrival time (in minutes) of tife serviceperson relative to the scheduled time. Then based on...
The time spent to arrive to the university is normally distributed with mean 10 minutes and standard deviation 3. If classes start at 9:00 am, what time should students leave home so they will be late only 9% of the time? 10 minutes before 8 am b. 25 minutes before 8 am c.14 minutes before 8 am d. None Five motors (numbered 1 through 5) are available for use, two motors are defective. Motor 1 and 2 me from supplier...
2. The time it takes you to come to school is approximately normally distributed with a mean of 45 minutes and a standard deviation of 3 minutes. What time must you leave home in the morning so that you are 95% sure of arriving at school by 9:00 AM? (5 pts.) ISCQ5 STAT120SLW15
Time to finish a final exam is normally distributed with mean 0.8 hours and standard deviation 7 minutes. What is the first quartile of the time distribution?
bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of 10 minutes and a standard deviation of 2 minutes. a. What is the probability that a randomly selected customer experiences a wait-time of less than 5 minutes? b. Find the wait time that defines the upper 1 percent. bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of...
Suppose that pizza delivery times are normally distributed with a population standard deviation of 6 minutes. A random sample of 50 pizza delivery restaurants is taken and has a sample mean delivery time of 36 minutes. Construct a 90% confidence interval for the population mean delivery time. What is the sample mean? 6 1.87 36 1.64 What is the sample size? 8.33 90 50 36 What is the population standard deviation? 0.85 50 36 6 What is the confidence level?...
The amount of time Americans commute to work is normally distributed with mean of 45 minutes and a standard deviation of 15 minutes. According to the Empirical Rule, approximately 95% of Americans commute between ["20.33", "30", "0", "15"] and ["60", "90", "75", "69.67"] minutes