As part of an annual review of its accounts, a discount brokerage selects a random sample...

Question

Question

As part of an annual review of its accounts, a discount brokerage selects a random sample...

As part of an annual review of its accounts, a discount brokerage selects a random sample of 29 customers. Their accounts are reviewed for total account valuation, which showed a mean of $31,500, with a sample standard deviation of $8,650. (Use t Distribution Table.)

What is a 95% confidence interval for the mean account valuation of the population of customers? (Round your answers to the nearest dollar amount.)

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Add a comment

Answer 2

Similar Homework Help Questions

As part of an annual review of its accounts, a discount brokerage selects a random sample...

As part of an annual review of its accounts, a discount brokerage selects a random sample of 28 customers. Their accounts are reviewed for total account valuation, which showed a mean of $36,700, with a sample standard deviation of $8,500. (Use t Distribution Table.) What is a 98% confidence interval for the mean account valuation of the population of customers? (Round your answers to the nearest dollar amount.) 98% confidence interval for the mean account valuation is between $ and...
As part of an annual review of its accounts, a discount brokerage selects a random sample...

As part of an annual review of its accounts, a discount brokerage selects a random sample of 25 customers. Their accounts are reviewed for total account valuation, which showed a mean of $36,300, with a sample standard deviation of $8,950. (Use t Distribution Table.) What is a 90% confidence interval for the mean account valuation of the population of customers? (Round your answers to the nearest dollar amount.)
As a part of its annual review of accounts, a brokerage firm selects a random sample...

As a part of its annual review of accounts, a brokerage firm selects a random sample of 15 customers. The average account value for these customers was $32,000 with a standard deviation of $8,200. Determine the 95% confidence interval for the account value.

please include sketch, thanks! A discount brokerage selected a random sample of 64 customers and reviewed...

please include sketch, thanks! A discount brokerage selected a random sample of 64 customers and reviewed the value of their accounts. The mean was $32,000 with a population standard deviation of $8,200. What is a 90% confidence interval for the mean account value of the population of customers? Answers Point Estimate Standard Error Margin of Error Alpha Critical Value Confidence Interval
A random sample of 144 checking accounts at a bank showed an average daily balance of...

A random sample of 144 checking accounts at a bank showed an average daily balance of $295. The standard deviation of the population is known to be $72. Please answer the following questions: (a) Find the standard error of the mean. (b) Give a point estimate of the population mean. (c) Construct a 95% confidence interval estimates for the mean.
a-c please 2. A random sample of 144 checking accounts at a bank showed an average...

a-c please 2. A random sample of 144 checking accounts at a bank showed an average daily balance of $295. The standard deviation of the population is known to be $72. Please answer the following questions: (a) Find the standard error of the mean. (b) Give a point estimate of the population mean. (c) Construct a 95% confidence interval estimates for the mean.

A sample survey of 62 discount brokers showed that the mean price charged for a trade...

A sample survey of 62 discount brokers showed that the mean price charged for a trade of 100 shares at $50 per share was $31.22. The survey is conducted annually. With the historical data available, assume a known population standard deviation of $19. (a) Using the sample data, what is the margin of error in dollars associated with a 95% confidence interval? (Round your answer to the nearest cant) $ (b) Develop a 95% confidence interval for the mean price...
1. A random sample of 82 customers, who visited a department store, spent an average of...

1. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation of expenditures at this store is O = $19. What is the e 98% confidence interval for the population mean? 2. A sample of 25 elements produced a mean of 123.4 and a standard deviation of 18.32 Assuming that the population has a normal distribution, what is the 90% confidence interval for the population mean? 3....
In a random sample of 32 Chuck E. Cheese employees, the mean annual earnings was $21,721....

In a random sample of 32 Chuck E. Cheese employees, the mean annual earnings was $21,721. Assume the population standard deviation is $5260. Construct a 95% confidence interval for the population mean annual earnings for Chuck E. Cheese employees and interpret your results.

A simple random sample of 90 items from a population with = 9 resulted in a...

A simple random sample of 90 items from a population with = 9 resulted in a sample mean of 38. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. to b. Provide a 95% confidence interval for the population mean. to c. Provide a 99% confidence interval for the population mean. to Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample...

As part of an annual review of its accounts, a discount brokerage selects a random sample...

Homework Answers