A company claims that the time their customers spend waiting in line for service is normally...
A company claims that the time their customers spend waiting in line for service is normally distributed with a mean of 21.4 minutes and a standard deviation of 7.2 minutes.
Approximately 10% of the customers can expect to wait as long as how many minutes for service? (with steps please)
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A company claims that the time their customers spend
waiting in line for service is normally...
The time spent waiting in the line is approximately normally distributed. The mean waiting time is...
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...
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...
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...
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 time spent waiting in the line is approximately normally distributed. The mean waiting time is...
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.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is...
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 2 minutes. Find the probability that a person will wait for more than 1 minute. Round your answer to four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is...
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 77 minutes and the variance of the waiting time is 11. Find the probability that a person will wait for less than 88 minutes. Round your answer to four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is...
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the variance of the waiting time is 4. Find the probability that a person will wait for between 6 and 9 minutes. Round your answer to four decimal places
1) A nation fast food chain claims that the waiting time of customers for service is...
1) A nation fast food chain claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes or less. a) State the Hypothesis to show conclude the average waiting time for service is less than 3 minutes. b) Choose a level of a. Use a = 0.05 for this problem. c) To test the hypothesis, you take a sample of 50 customers and records the wait time. The data appear in the Waiting...
Practice for Hypothesis Testing (with z) 3. A bank claims that its customers wait in line...
Practice for Hypothesis Testing (with z) 3. A bank claims that its customers wait in line for an average of 3 minutes with a standard deviation of 1.4 minutes. You think customers wait for more than three minutes. You sample the waiting times of 26 customers and find a sample mean of 3.5 minutes. Do a hypothesis test using a= 0.02. 4. A college’s admissions guide state that students spend approximately $300 for textbooks each semester. A random sample of...
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