Reference no: EM131913118
Sampling Distribution show all your work for full point. (5 pts)
A bank in a small town has 10,000 customers. A national survey on the banking habits of people in U.S. shows that 80% of the people with income higher than 50,000 dollars have both savings and checking accounts and also shows that the average number of banking operations that a person aged 18 and over performs per week is 5. The manager of the bank decides to do a survey among the customers of his bank and takes a simple random sample of 200 customers aged 18 and over. In the sample, the average number of banking transactions per week is 8 with standard deviation equal to 10.
a) The average number of times a customer carries out banking transactions per week is _________ give or take ________ or so. Show how you computed your answers.
b) Give a 90% confidence interval for the average number of banking operations per week for the town residents aged 18 and over. Show your working.
c) Is the apparent difference in banking habits between the nation and the customers of the bank real or just due to chance? Explain
d) A 95% confidence interval gives a range of values for the _______which are plausible according to the observed data. Fill in the blanks.
(Possible answer: (A) Population average, (B) Sample average).
e) The sample standard deviation measures how far _______ is from sample average.
The standard deviation for the sample average measures how far __________is from the population average - for typical __________.
To fill in the blanks, choose among: (A) number of bank operations, (B) average number of operations, (C) samples, (D) customers aged 18 and over, (E) bank, (F) person with high income.
|
What is recommendation assuming variable manufacturing costs
: What is your recommendation assuming all variable manufacturing costs will be eliminated and fixed manufacturing costs for the company are fixed?
|
|
What can ratio analysis contribute to financial planning
: What can ratio analysis contribute to financial planning and analysis? What are the determinants of the dynamic adjustment process
|
|
What is the sales variance shown in a flexible budget report
: If actual sales revenue is $550,000 based on sales of 5,000 units, what is the sales variance shown in a flexible budget performance report?
|
|
What lot size should be produced
: A producer of electronic parts wants to take account of both production rate and demand rate in deciding on its lot sizes. A particular $50 part.
|
|
Problem regarding the sampling distribution
: A bank in a small town has 10,000 customers. A national survey on the banking habits of people in U.S. shows that 80% of the people with income.
|
|
What was the closing price for this stock that appeared
: If the company currently has 33 million shares of stock outstanding, what was net income for the most recent four quarters?
|
|
What is the probability that at least 3 of them have type
: If a random sample of 10 is taken from the population , what is the probability that at least 3 of them have type o blood?
|
|
Is there a way to solve this on a financial calculator
: What is the percentage change in the price of this bond if the market yield to maturity rises to 5.7 percent from the current rate of 5.5 percent?
|
|
What is the probability that the student is a sophmore
: At a certain college, there are 600 freshman, 400 sophomores, 300 juniors, and 200 seniors. if one student is selected at random.
|