A set of final examination grades in an introductory statistics course is normally distributed, with a mean
Question:
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8.
a. What is the probability that a student scored below 91 on this exam?
b. What is the probability that a student scored between 65 and 89?
c. The probability is five percent that a student taking the test scores higher than what grade?
d. If the professor grades on a curve (i. e., gives As to the top ten percent of the class, regardless of the score), are you better off with a grade of 81 on this exam or a grade of 68 on a different exam, where the mean is 62 and the standard deviation is 3? Show your answer statistically and explain.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 83% (12 reviews)
PHStat O utput Common Data Mean 73 Standard Deviation 8 Probability for X X Value 91 Z Value 225 PX ...View the full answer
Answered By
Ashington Waweru
I am a lecturer, research writer and also a qualified financial analyst and accountant. I am qualified and articulate in many disciplines including English, Accounting, Finance, Quantitative spreadsheet analysis, Economics, and Statistics. I am an expert with sixteen years of experience in online industry-related work. I have a master's in business administration and a bachelor’s degree in education, accounting, and economics options.
I am a writer and proofreading expert with sixteen years of experience in online writing, proofreading, and text editing. I have vast knowledge and experience in writing techniques and styles such as APA, ASA, MLA, Chicago, Turabian, IEEE, and many others.
I am also an online blogger and research writer with sixteen years of writing and proofreading articles and reports. I have written many scripts and articles for blogs, and I also specialize in search engine
I have sixteen years of experience in Excel data entry, Excel data analysis, R-studio quantitative analysis, SPSS quantitative analysis, research writing, and proofreading articles and reports. I will deliver the highest quality online and offline Excel, R, SPSS, and other spreadsheet solutions within your operational deadlines. I have also compiled many original Excel quantitative and text spreadsheets which solve client’s problems in my research writing career.
I have extensive enterprise resource planning accounting, financial modeling, financial reporting, and company analysis: customer relationship management, enterprise resource planning, financial accounting projects, and corporate finance.
I am articulate in psychology, engineering, nursing, counseling, project management, accounting, finance, quantitative spreadsheet analysis, statistical and economic analysis, among many other industry fields and academic disciplines. I work to solve problems and provide accurate and credible solutions and research reports in all industries in the global economy.
I have taught and conducted masters and Ph.D. thesis research for specialists in Quantitative finance, Financial Accounting, Actuarial science, Macroeconomics, Microeconomics, Risk Management, Managerial Economics, Engineering Economics, Financial economics, Taxation and many other disciplines including water engineering, psychology, e-commerce, mechanical engineering, leadership and many others.
I have developed many courses on online websites like Teachable and Thinkific. I also developed an accounting reporting automation software project for Utafiti sacco located at ILRI Uthiru Kenya when I was working there in year 2001.
I am a mature, self-motivated worker who delivers high-quality, on-time reports which solve client’s problems accurately.
I have written many academic and professional industry research papers and tutored many clients from college to university undergraduate, master's and Ph.D. students, and corporate professionals. I anticipate your hiring me.
I know I will deliver the highest quality work you will find anywhere to award me your project work. Please note that I am looking for a long-term work relationship with you. I look forward to you delivering the best service to you.
3.00+
2+ Reviews
10+ Question Solved
Related Book For
Business Statistics A First Course
ISBN: 9780321979018
7th Edition
Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan
Question Posted:
Students also viewed these Statistics questions
-
A random variable is normally distributed with a mean of 25 and a standard deviation of 5. If an observation is randomly selected from the distribution, a. What value will be exceeded 10% of the...
-
A random variable is normally distributed with a mean of 60 and a standard deviation of 9. a. What is the probability that a randomly selected value from the distribution will be less than 46.5? b....
-
A random variable X is normally distributed with a mean of 100 and a variance of 100 and a random variable Y is normally distributed with a mean of 200 and a variance of 400. The random variables...
-
Use the data given in Table to construct a frequency distribution with a first class (in millions) of 50-99. Novel Copies Sold (millions) Don Quixote . . . . . . . . . . . . . . . . . . . . . . . . ....
-
In 2000, the chairman of a California ballot initiative campaign to add none of the above to the list of ballot options in all candidate races was quite critical of a Field poll that showed his...
-
Anethole, C10H12O, a major constituent of the oil of anise, has the 1H NMR spectrum shown. On oxidation with Na2Cr2O7, Anethole yields p-methoxybenzoic acid. What is the structure of Anethole? Assign...
-
Is every expected future payment a liability?
-
A building with a cost of $780,000 has an estimated residual value of $90,000, has an estimated useful life of 40 years, and is depreciated by the straight-line method. (a) What is the amount of the...
-
Journalizing Installment Notes On the first day of the fiscal year, a company issues $71,000, 11%, six-year installment notes that have annual payments of $17,783. The first note payment consists of...
-
1. Social Security is indexed to inflation. If the inflation rate is 3 percent over the next 30 years, how much Social Security income will the Rohrbachs receive? How much will their income...
-
Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1, as in Table E. 2), what is the probability that a. Z is less than 1.57? b. Z is greater than 1.84? c. Z is...
-
A Nielsen study indicates that 18 to 24 year old spend a mean of 135 minutes watching video on their smartphones per month. (Data extracted bit. ly/1hF3BP2.) Assume that the amount of time watching...
-
Gunnison Creamery produces a variety of specialty ice creams and buys ingredients from many suppliers. Each supplier seems to have unique policies about discounts and freight terms. Gunnison Creamery...
-
What is EBITDA for your company for the first year?
-
Under what conditions would the concept of highest and best use be in conflict with the concept of discounted cash flow?
-
What are the principles behind bootstrap marketing? Give examples of why each principle is important.
-
What do you like to do with your time?
-
A company has free cash flow: year 1, \($100,000;\) year 2, \($90,000;\) year 3, \($110,000;\) year 4, \($120,000;\) year 5, \($125,000;\) year 6 and beyond, \($125,000\). The required rate of return...
-
Sophisticated cameras use a series of several lenses. Light can reflect from the surfaces of these various lenses and degrade image clarity. To limit these reflections, lenses are coated with a thin...
-
Phosgene, COCl2, is a toxic gas used in the manufacture of urethane plastics. The gas dissociates at high temperature. At 400oC, the equilibrium constant Kc is 8.05 104. Find the percentage of...
-
Buildwell Manufacturing Company was formed 10 years ago. At that time it took out a 30- year mortgage to purchase land and a factory building that continues to house all of its manufacturing,...
-
The financial services call center in Problem 2.20 also monitors call duration, the amount of time spent speaking to customers on the phone. The file CallDuration contains the following data for...
-
Prenumbered sales invoices are kept in a sales journal. The invoices are numbered from 0001 to 5000. a. Beginning in row 16, column 01, and proceeding horizontally in a table of random numbers (Table...
-
The Big Mac index was created by The Economist in 1986 as a lighthearted guide to whether currencies are at their correct level. The file BigMacIndex201807 contains the dollar price (rounded to two...
-
QUESTION 80 Start-up costs not currently deductible can be amortized over 180 months. True False
-
Flint Construction Ltd. prepares its reports using IFRS. The following information relates to its shareholders equity on January 1, 2023, the first day of its fiscal year. $0.80-noncumulative...
-
Sales Beginning Inventory Net Purchases Ending Inventory Cost of Goods Sold Gross Profit Operating Expenses Income (Loss) $655,285 A $421,590 $96,478 B $232,819 C $67,394 D 315 E 345 1,298 725 489...
Study smarter with the SolutionInn App