Handout assignment IIIDue date: 10/6/20161. A bank has determined that the monthly balances of the saving accounts of it...

Get help with any kind of assignment - from a high school essay to a PhD dissertation

Handout assignment III
Due date: 10/6/2016
1. A bank has determined that the monthly balances of the saving accounts of its customers are
normally distributed with an average balance of $1,200 and standard deviation of 250. If a
sample of 36 customers is selected,
a. What is the probability that the average monthly balances are between $1,255 and $1,275?
b.

What is the probability that the total balance of the saving accounts for the 36 customers is
less than $41,000?

2. Suppose that a random sample of 20 power window mechanisms is taken from a lot supplied to
an auto manufacturer. Each sampled mechanisms is tested by putting it through continuous updown cycles until it fails. Suppose that in the entire lot, the mean time to failure is 4200 cycles
and that the standard deviation 3400. The mean failure time for the sample is recorded.
a. What is the expected value of the sample mean?
b. What is the standard deviation of the sample mean?
c. Would it be reasonable to assume that the distribution of individual failure times should be
roughly normal?
d. Would it be reasonable to assume that the distribution of sample mean should be roughly
normal?
3.

4.

5. An Internet retailer stocks a popular electronic toy at a warehouse. Every week the retailer makes a
decision about how many units of the toy to stock. Suppose that weekly demand for the toy is
approximately normally with mean of 2500 units and standard deviation of 300 units.
a) What is the probability that weekly demand will be between 2255and 2850?
b) If the retailer has 2750 units on hand at the start of the week, what is the probability that weekly
demand will be greater than inventory?
c) If the retailer wants to limit the probability of being out the stock of the electronic toy to no more
than 2.5% in a week, how many units should the warehouse stock.

6. Chapter 4 4.185 (12th Ed) (use MINITAB)










OUR SERVICE CHARTER







  • 100% Plagiarism-Free Guarantee

    We deliver top-quality essays through employing various measures that seek to improve the content of a given assignment. One of the quality-control systems that we use entails plagiarism checkers. These systems help us to deliver a 100% plagiarism-free papers to our clients. We also value the originality of papers, and we do not resell any submitted paper. It means that every client always gets a unique paper. Additionally, our perfect team of writers is usually keen on the academic writing standards as well as the instructions brief that a client submits. Our team of writers holds matchless competence when it comes to its service delivery. Every member of the team usually has an academic degree, and the team’s diversified skills make it possible for us to have a qualified writer in any client’s area of study. Additionally, our past clients have always given a positive feedback on each of our writers.
  • Professional Academic Writers

    An academic degree is one of the qualifications that our writers hold. This is only a minimum requirement that we ask from our writers, but the team also has writers who possess higher educational credentials. It means that the team comprises of competent writers who have gone through institutions of higher learning and passed their exams. Subsequently, the writers have a good grasp of what our clients require. It is notable that our writers not only want to apply their acquired knowledge, but they are also willing to help our clients to outperform them. This is a clear indication of a team that is willing to walk an extra mile. We uphold professionalism in our operations, and our clients should look forward to receive services from a team of experts. It is the spirit of value addition that makes us to scale any heights in order to deliver and outperform our clients’ expectations.
  • 100% Confidentiality

    We mind about the interests of our clients holistically. It is for this reason that we maintain high-level confidentiality in regard to our clients’ personal information. Importantly, we use the information for purposes that relate with our services only. The only information that we require relates to our clients’ writing needs. It is also important to note that our clients’ payment information is secure with us. If there is any query in regard to the payment information, then our support team is always willing to provide any clarifications in a prompt manner. Confidentiality extends to the fact that a client made use of our services. It means that we hold our relationship with our clients in secrecy. Importantly, our confidentiality measures beat any advanced security measure that can identify any information regarding our relationship with our clients. It means that our clients transact with us freely without any fear of information leakage.
  • Free Revisions

    The papers that we deliver usually reflect a high quality level. However, there is always a room for any additional fine-tuning touch in line with a client’s preference without any additional charges. To begin with, a client has discretion to make a choice on their preferred top writer from our team. Such a writer could have handled past work for the client and received a positive review from the same. It means that the client has confidence of the quality of service that the writer delivers. Secondly, a client has an option of making use of our editing services. Our editors are always on standby to revise the paper and ensure that it matches with the expectations of a client that the instruction brief had detailed. The revision covers content adjustment that removes off-topic details, addition of sources, removal of language style errors, and assessment of the referencing style in order to enhance compliance.