+1-415-315-9853

info@mywordsolution.com

Statistics

To test the significance difference between two population mean

A dietician investigated whether apples washed in hot water or in cold water turned brown at different rates when exposed to air. She took 13 random apples and cut each in half. She washed one half of each apple in hot water and the other half in cold water, and after that put both halves out in a tray. Her results (in hours until turning a particular shade of brown) are in the table below. At ∞_ = .01, did she see a difference between the two treatments?

 Hot Water Cold Water Sample mean 5.50 4.85 Sample variance 2.60 2.00

a.No, since the test value -1.09 is inside the range (-3.055, 3.055).
b.No, since the test value -0.79 is inside the range (-3.055, 3.055).
c.Yes, since the test value -0.79 is inside the range (-3.012, 3.012).
d.Yes, since the test value -1.09 is outside the range (-3.012, 3.012).

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M922112

Have any Question?

Related Questions in Statistics and Probability

A multiple-choice test consists of 7 questions each

A multiple-choice test consists of 7 questions. Each question has answer choices of a, b, c, and d, and only one of the choices is correct. If a student randomly guesses on each question, what is the probability that she ...

Question the mean weight 10 randomly selected newborn

Question: The mean weight 10 randomly selected newborn babies at a local hospital was found to be 7.14 and the standard deviation was found to be 0.87 lbs. If the weights of newborn babies is approximately normally distr ...

What tensions emerged in the southwest that threatened to

What tensions emerged in the Southwest that threatened to lead the United States into a war with Mexico? On what grounds did President James K. Polk ask Congress to declare war on Mexico?

1 the total variance in a set of scores can be partitioned

1. The total variance in a set of scores can be partitioned into two components. What are they, and how do they differ? 2. What are some factors that contribute to error variance in a set of data? 3. Generally, do resear ...

Researchers want to test the effectiveness of a new pain

Researchers want to test the effectiveness of a new pain medication. Four hundred people were recruited to participate in the clinical trial. In clinical testing, 55 out of 239 people taking the medication reported pain ...

The borda and condorcet methods- the following example was

The Borda and Condorcet Methods :- The following example was presented by Condorcet, in a critique of the Borda Method. A committee composed of 81 members is to choose a winner from among three candidates, A, B, and C. T ...

A repeated-measures experiment comparing only two

A repeated-measures experiment comparing only two treatments can be evaluated with either a t statistic or an ANOVA. As we found with the independent-measures design, the t test and the ANOVA produce equivalent conclusio ...

Nicollette joined towson university basketball team since

Nicollette joined Towson University basketball team since summer 2015. On average, she is able to score 30% of the field goals. Assume she tries 15 field goals in a game. (a) Let X be the number of field goals that Mimi ...

A company has 1000000 to invest in new rampd projects the

A company has \$1,000,000 to invest in new R&D projects. The company wants to determine what set of projects should be selected. [Deterministic Scenario] The following table summarizes the initial cost and revenue potenti ...

The bad debt ratio for a financial institution is defined

The bad debt ratio for a financial institution is defined to be the dollar value of loans defaulted divided by the total dollar value of all loans made. A random sample of six Ontario banks is selected and the bad debt r ...

• 13,132 Experts

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen