Question: The average waiting time for a drive-in window at a local bank is 9.9 minutes, with a standard deviation of 4 minutes. When a customer

The average waiting time for a drive-in window at a local bank is 9.9 minutes, with a standard deviation of 4 minutes. When a customer arrives at the bank, find the probability that the customer will have to wait the given time. Assume the random variable is normally distributed if necessary, round intermediate calculations to the nearest hundredth.

a. If a customer is selected at random, the probability that he or she will have to wait between

5 and 10 minutes is %.

b. Less than 6 minutes or than 9 minutes is %

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

The average waiting time at a drive-in window of a local bank is 10.3 minutes, with a standard deviation of 2.7 minutes. Assume the variable is normally distributed. If a customer arrives at the...

The average waiting time for a drive-in window at a local bank is 9.5 minutes, with a standard deviation of 4 minutes. When a customer arrives at the bank, find the probability that the customer will...

3. Given: Model 1, 2 = 7 perhour u = 10 per hour. a) Measure the average queue length. b) Measure the average number of customers in the service system. c) Measure the average time that customer...

Given: Model 1 , per hour. a)Measure the average queue length. b)Measure the average number of customers in the service system. c)Measure the average time that customer wait. d)Measure the average...

Find A 95% confidence interval for the mean waiting time at a drive-in window of a bank. A random sample of 92 waiting times has a mean of 5.4 minutes and a standard deviation of 4.2 minutes. Round...

Case study: Remedy Physiotherapy. I need help in drafting a marketing plan Names of people and businesses are disguised. Some aspects of the local area and the physiotherapy industry are simplified...

1.If the p -value for a one-tailed test is 0.019, then the null hypothesis a) can be rejected at a significance level of 0.01. b) would be rejected or not rejected depending on the value of the...

PA 16-14 Find a Doctor, is a small startup that helps... Find a Doctor, is a small startup that helps people find a physician that best meets their needs (location, insurance accepted, etc.) During a...

Question 4 A bank is considering opening a drive-through window for customer service. Customers are estimated to arrive at the average rate of 15 per hour. The teller who works at the window can...

At the bank teller's window, arrivals and service times are randomly distributed (Poisson and exponential distributions, respectively). There is only one teller at the window. If the arrival rate is...

Baldwin Corp. has just paid a dividend of $2.00. Over the next two years, this dividend is expected to grow by 20% per year. After two years, dividend growth is expected to stabilize at 10%. If the...

A special vessel (see Fig. 16.52) contains ice and super-cooled water (both at 10oC) connected by vapor space. Describe what happens to the amounts of ice and water as time passes. Figure 16.52....

5. Ascertain if your states income tax has an AMT component. If your state does not levy an income tax, choose a contiguous state that does. In an e-mail to your instructor, outline how the state AMT...

The soft goods department of a large department store sells 2990 units per month of a certain large bath towel. The unit purchase cost of a towel to the store is $3.5 and the cost of placing an order...

2. In this chapter, the reader should reflect on the following concepts:

1. To gain knowledge about the way information is stored in memory.

5. Which metaphors do you mainly use when talking about organizations and companies? What do these metaphors express about an organization or a company? Are there other metaphors that may be more...