Question: A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers who are familiar with both languages

A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers who are familiar with both languages are asked to code a standard function in both languages and the time (in minutes) is recorded. The data follow:

Time Programmer Design Language Design Language 2 17 18 2 16 14 3 21 19 4 14 11 18 23 24 21 16 10 8. 14 13 21 19 10 23 2

(a) Is the assumption that the difference in coding time is normally distributed reasonable?

(b) Find a 95% confidence interval on the difference in mean coding times. Is there any indication that one design language is preferable?

Time Programmer Design Language Design Language 2 17 18 2 16 14 3 21 19 4 14 11 18 23 24 21 16 10 8. 14 13 21 19 10 23 24 11 13 15 12 18 20

Step by Step Solution

★★★★★

3.42 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a The data fall approximately along a line in the normal probability plots Therefore the assumptio... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Applied Statistics and Probability Questions!

Solar radiation incident on a large body of clean water (k = 0.61 W/m K and = 0.15 10 -6 m 2 /s) such as a lake, a river, or a pond is mostly absorbed by water, and the amount of absorption varies...

In an analysis investigating the usefulness of pennies, the cents portions of 100 randomly selected credit card charges from the author are recorded, and they have a mean of 47.6 cents and a standard...

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...

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...

A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers, familiar with both languages, are asked to code a...

4. (10 points) A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers who are familiar with both languages...

2. (10 points) Consider the following frequency table of observations on the random variable X. Values 2 4 or more Observed 4 frequency Based on these 100 observations, is a Poisson distribution with...

An article in the ASCEJournoi'ofEnergy Engineering {1999, Vol. 125, pp. 5975) describes a study of the thermal inertia properties of autoclaved aerated concrete used as a building material. Five...

A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers, familiar with both languages, are asked to code a...

Is Southern Pacific strictly liable? Should the government be liable? How could Southern Pacific have protected itself against a lawsuit? What if, instead of bombs exploding, chemicals were spilled...

Mortgage-backed securities (MBS) produced by New Century and other major subprime lenders were a focal point of attention during the recent financial crisis. Many parties maintain that the...

Some states require detailed plans to be submitted for health care organizations along with justifications for new equipment purchase, new construction, or derelopment of new service offerings...

As the Chief Strategy Officer of Kia Motors & having entered India recently, you have to decide on a Strategy Implementation tactic to take on the fiercely contested automobile car market space...

You are the owner of a multi-million-dollar Retail business in India. Since the past 5 years, your financial reports are showcasing a consistent drop in revenues & have entered into a loss-making...

Companies face two major basic financial decisions: the investment decision and the financing decision. Given the above, as a professional in financial administration, briefly explain what each of...

1.2. Draw a consumers indifference curves for wine and cheese. Describe and explain four properties of these indifference curves.

Can we infer that women are more likely than men to lose their jobs in the next 12 months (JOBLOSE: In the next 12 months how likely is it that you will lose your job or be laid off: 1 = Very likely,...

Refer to Exercise 19.24. Is there sufficient evidence to infer that people who work for themselves (WRKSLF: 1 = Self-employed, 2 = Work for someone else) differ from those who work for someone else...

Do Democrats and Republicans (PARTYID3:1 = Democrat, 3 = Republican) differ in their views about the federal income tax that they have to pay (TAX: Do you consider the amount of federal income tax...

A survey asked senior executives at large corporations their opinions about the economic outlook for the future. One question was, "Do you think that there will be an increase in the number of...

Quad Enterprises is considering a new 3-year expansion project that requires an initial fixed asset investment of $3.6 million. The fixed asset falls into the 3-year MACRS class (MACRS Table) (TIP:...

A recent report in which a major pharmaceutical company released the results of testing that had been done on the cholesterol reduction that people could expect if they use the company's new drug...