During may 2009 visitors to usatodaycom spent an average, Ask an Expert

Statistics

During May 2009, visitors to usatoday.com spent an average of 12.2 minutes per visit, compared to 11.0 minutes for visitors to washingtonpost.com. Assuming that file XR11030 contains the sample data underlying these results, use the 0.01 level of significance in exam- ining whether the population mean visiting times for the two sites might really be the same. Identify and interpret the p-value for the test. Construct and interpret the 99% confidence interval for the difference between the population means. Is the hypothesized difference (0.00) within the interval? Given the presence or absence of the 0.00 value within the interval, is this consistent with the findings of the hypothesis test?

Source: Jennifer Saba, "Average Time Spent on Top 30 Newspaper Web Sites Declines," editorandpublisher.com, June 22, 2009.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91669807

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Suppose a soccer team wins each of its games with

Suppose a soccer team wins each of its games with probability 0.4, loses with probability 0.4, and ties with probability 0.2, with each game's outcome independent. Their season starts, and they play a game every day.Let ...

A process is normally distributed with a mean of 104

A process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 8.2 rotations per minute. If a randomly selected minute has 118 rotations per minute, would the process be considered ...

Homework -the linear probability model who smokes and who

HOMEWORK - The Linear Probability Model: Who smokes and who doesn't? The EXCEL file firm-smoke_homework9 contains data from a survey on smoking behavior among employees in a large firm. Use the data provided, read the ac ...

In a panel discussion with 3 industry reps 2 government

In a panel discussion with 3 industry reps, 2 government reps, and 1 association rep, how many ways can they be seated along a row a) with no restrictions (each person can sit anywhere)? b) if the 3 industry reps must si ...

Fifty-seven percent of employees make judgements about

Fifty-seven percent of employees make judgements about their co-workers based on the cleanliness of their desk. You randomly select 8 employees and ask them if they judge co-workers based on this criterion. The random va ...

Research scenario a community psychologist is interested in

Research Scenario: A community psychologist is interested in whether people's self-reported degree of religious belief predicts their self-reported feelings of well-being. She administers two questionnaires to 17 individ ...

The number of stomata tiny openings on the leaves of a

The number of stomata (tiny openings) on the leaves of a particular mutant of Arabidopsis (a common experimental plant) is known to be approximately normally distributed with mean 75 and variance 49. What is the probabil ...

The equation used to predict how long a cold will last is

The equation used to predict how long a cold will last is y=-1.8 + 0.09x1 + 3.2x2 - 1.9x3, where x1 is person's temperature on the first day, x2 is number of people seen each day, and x3 is the amount of sleep the person ...

The number of people arriving for treatment at an emergency

The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a mean of 7 people per hour. How many people do you expect to arrive during a 55-minute period?

Determine the critical values for a left-tailed test of a

Determine the critical? value(s) for a? left-tailed test of a population mean at the alpha α=0.01 level of significance based on a sample size of n=15.

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

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.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert