Why do we modify the formula for calculating standard deviation when using t tests (and divide by

Question:

Why do we modify the formula for calculating standard deviation when using t tests (and divide by N − 1)?

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

Step by Step Answer:

Related Book For book-img-for-question

Essentials Of Statistics For The Behavioral Sciences

ISBN: 9781464107771

3rd Edition

Authors: Susan A. Nolan

See More Books

Question Posted: Apr 25, 2018 05:51 AM

See More Questions

Suppose you convert y = income from British pounds to dollars, and suppose a pound equals 2.00 dollars. a. Explain why the y values double, the mean of y doubles, the deviations (y - ) double, and...
A normal probability plot of the n = 26 observations on escape time given in Exercise 36 of Chapter 1 shows a substantial linear pattern; the sample mean and sample standard deviation are 370.69 and...
In the following table, we repeat the salary data in Data Set II from Example 3.1. a. Use Definitions 3.4 and 3.6 on pages 95 and 105, respectively, to obtain the sample mean and sample standard...
4. (23 pts) A plate is loaded so that a state of plane strain (Ezz- &zx=&zy =0) exists. (a) Determine the displacements for the plate for the deformations shown, i.e. finding u-Cixy and v=C2xy. (b)...
Quickness Computer, Inc. was a manufacturer of computers. A Hollywood star indicated on national television that Quickness was his favorite computer. Buoyed by this comment, sales of Quickness...
i. Express 2/(x + 1)(x + 3) in partial fractions. ii. Using your answer to part i, show that iii. Hence show that 2 1 1 (es) (x + ! (x + 3) (x+1) +1 x+3 + + 1 (x+3) .
3 What would have been the advantages and disadvantages of using an interpreter in this particular situation?
Find the present values of the following ordinary annuities: a. PV of $400 each six months for five years at a simple rate of 12 percent, compounded semiannually b. PV of $200 each three months for...
On March 6, 2016, Cloe Company acquired an office building for $9,700,000 (with $700,000 being allocated to the land). The straight-line cost recovery method was used. The property was sold on June...
Using the cash flow statement find the dividends paid to the Pfizer owners in the most recent year.
A carbocation is resonance stabilized when it is adjacent to an oxygen atom: Such a carbocation is even more stable than a tertiary carbocation. Using this information, propose a mechanism for the...
One liter of fully oxygenated blood can carry 0.18 liters of O 2 measured at T = 298 K and P = 1.00 atm. Calculate the number of moles of O 2 carried per liter of blood. Hemoglobin, the oxygen...
The manager of a supermarket counts the number of customers waiting in the express checkout line at random times throughout the week. Her observations are found in the following frequency table:...
What volumetric airflow rate (Qa) is required to maintain a G value of 500s-1 in a basin that is 2.75 m deep and provides a liquid detention time of 5 min? Perform the exercise for water temperatures...
Read this article, then answer the following questions: 1- Description of Instrument: a. Title of instrument, author(s), publication date 2/18/24, 5:43 PM Abuse Risk Inventory for Women: EBSCOhost...
Suppose that there is a magnetic field B(x, y, z) = x2 filling a 3D space. The coordinates are set up as a Cartesian coordinate system with = 2. For all the discussions below, ignore the units. a)...
A vertical solid cylinder of uniform cross-sectional area A floats in water. The cylinder is partially submerged. When the cylinder floats at rest, a mark is aligned with the water surface. The...
Non-manufacturing fixed cost for year 2011 equal to:$60,780 out of which half are Administrative expenses.Administrative expenses are expected to increase by: 10%The total Variable nonmanufacturing...
Jackson Publishing, Inc. (JPI), publishes two newspapers and, until recently, owned a professional baseball team. The baseball team had been losing money for several years and was sold at the end of...
Complete the equations for the following equilibria and calculate Keq where the Keq expression includes [HO]. Be sure to enter Keq in proper scientific notation. (a) ammonia (acting as a base) reacts...
What is your age? Using the two major rules of thumb for preemployment inquiries, identify whether each question can or cannot be asked during a job interview. A. Legal (can ask) B. Illegal (cannot...
How do you feel about unions? Using the two major rules of thumb for preemployment inquiries, identify whether each question can or cannot be asked during a job interview. A. Legal (can ask) B....
Which human resources management process was likely the most important for Wegmans?
thumbs up if correct A stock paying no dividends is priced at $154. Over the next 3-months you expect the stock torpeither be up 10% or down 10%. The risk-free rate is 1% per annum compounded...
Question 17 2 pts Activities between affiliated entities, such as a company and its management, must be disclosed in the financial statements of a corporation as O significant relationships O segment...
Marchetti Company, a U.S.-based importer of wines and spirits, placed an order with a French supplier for 1,000 cases of wine at a price of 200 euros per case. The total purchase price is 200,000...

Why do we modify the formula for calculating standard deviation when using t tests (and divide by

Question:

Step by Step Answer:

To conduct a t test we use the sample data to estimate va...View the full answer

Essentials Of Statistics For The Behavioral Sciences

Students also viewed these Mathematics questions