A sample of 81 observations is taken from a normal population with a standard deviation of 5.

Question:

A sample of 81 observations is taken from a normal population with a standard deviation of 5. The sample mean is 40. Determine the 95% confidence interval for the population mean.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Statistical Techniques in Business and Economics

ISBN: 978-1259666360

17th edition

Authors: Douglas A. Lind, William G Marchal

See More Books

Question Posted: May 28, 2018 07:59 AM

See More Questions

A sample of 49 observations is taken from a normal population with a standard deviation of 10. The sample mean is 55. Determine the 99% confidence interval for the population mean.
A random sample of size n = 100 is taken from a population of size N = 2,500 with mean = 45 and variance 2 = 81. a. Is it necessary to apply the finite population correction factor? Explain....
In a multiple linear regression based on eight observations, the following sample regression is obtained: y = 22.81 + 0.85x 1 - 0.71x 2 with s e = 4.69. Also, when x 1 equals 50 and x 2 equals 20, s...
Solve each compound inequality. Graph the solution set, and write it using interval notation. -2x +1> -11 or x+1> 10
A bag contains 6 red balls and 4 black balls. If we draw 5 balls, with each one replaced before the next is drawn, what is the probability that at least 2 balls drawn will be red?
A firm has the demand and total cost schedules given in the following table. If it wants to maximize profits, how much output should it produce? 12671 ice-65432 in 1 2 3 4 5
On a summer day the air temperature is $30^{\circ} \mathrm{C}$ and the relative humidity is $55 \%$. Water evaporates from the surface of a lake at a rate of $0.08 \mathrm{~kg} / \mathrm{h}$...
The Center for Shaker Crafts (CSC) is thinking about bringing a new exhibit to the Center. It will cost the Center $ 30,000 to bring the exhibit to town, an additional $ 12,000 for lighting and...
Evaluate the role of non-traditional thermodynamic cycles, such as supercritical CO2 cycles, organic Rankine cycles, and Kalina cycles, in improving energy efficiency and reducing emissions in power...
Case : Karl and June Monroe
Refer to the Lincolnville School District bus data. Information provided by manufacturers of school buses suggests the mean maintenance cost per year is $4,400 per bus with a standard deviation of...
Refer to the previous exercise. Instead of 49, suppose that 64 Americans were surveyed about their weekly expenditures on coffee. Assume the sample mean remained the same. a. What is the 95%...
Davidson ("Update on Ozone Trends in California's South Coast Air Basin," Air and Waste, 43, 226, 1993) studied the ozone levels in the South Coast Air Basin of California for the years 1976-1991. He...
Explain the retailers Strategic profit Model. How is financial leverage a measure of retailers performance?
The property being appraised is a 10-year old warehouse containing 30,000 square feet of gross buildingarea and 3,000 square feet of finished office area. The ceiling height is 18 feet. The quality...
explain which of the promotional strategies used by diesel are above or below the line. analyse the impact that each approach might have.
Divide and simplify. x + 3 9 X-2 X ' x = 0, 2
A call center manager is keen to understand the relationship between Average Speed of Answer (ASoA, measured in minutes) and Call Abandonment Rate (CARate, a number between 0 and 1). They believe...
The odds in favor of and the odds against the spinner landing on green. Assume that the spinner cannot land on a line. If spun once, determine.
In Exercises 1558, find each product. (9 - 5x) 2
Dole Pineapple Inc. is concerned that the 450 mL can of sliced pineapple is being overfilled. The population standard deviation is 0.85 mL. The quality control department took a random sample of 50...
Global TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is $1.25 per litre for self-serve regular unleaded. A random sample of 35 stations in...
In recent years, interest rates on home mortgages have been lowered to less than 6.0%. However, a recent study shows that the rate charged on credit card debt is more than 14%. A sample of 10 credit...
In February 2 0 1 6 , hackers targeted the central bank of Bangladesh and exploited vulnerabilities in SWIFT, the global financial system s main electronic payment messaging system, trying to steal...
In the Heckscher-Ohlin model, as trade occurs in a capital-abundant country, increased imports will force domestic import- competing firms to decrease prices and production. Labor and capital will...
Why has Gatorade been so successful in the sports drink market?

A sample of 81 observations is taken from a normal population with a standard deviation of 5.

Question:

Step by Step Answer:

38911 ...View the full answer

Statistical Techniques in Business and Economics

Students also viewed these Business questions