2. The time it takes you to come to school is approximately normally distributed with a...
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...
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the standard deviation of the waiting time is 2 minutes. Find the probability that a person will wait for more than 9 minutes. Round your answer to four decimal places.
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?
At an auto parts place, the inspection time for a vehicle is approximately normally distributed with the mean 30 minutes and the standard deviation 2 minutes. 1. What is the probability that a randomly selected car’s inspection time is between 25 minutes and 33 minutes? Round your answer to three decimal places. 2. The owner of this auto parts place will give a gift card to a customer if his car takes more 95% of inspection times. What is the...
Suppose that the travel time from your home to your office is normally distributedwith a mean of 40 minutes and standard deviation of 7 minutes. If you want to be95% certain that you will not be late for an office appointment at 1:00pm, what is thelatest time that you should leave home?
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
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the standard deviation of the waiting time is 2 minutes. Find the probability that a person will wait for more than 8 minutes. Round your answer the four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the standard deviation of the waiting time is 3 minutes. Find the probability that a person will wait for less than 7 minutes. Round your answer to four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 55 minutes and the standard deviation of the waiting time is 22 minutes. Find the probability that a person will wait for more than 33 minutes. Round your answer to four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the standard deviation of the waiting time is 1 minute. Find the probability that a person will wait for more than 3 minutes. Round your answer to four decimal places.