A web based software company is interested in estimating, Ask an Expert

Statistics

A web based software company is interested in estimating the proportion of individuals who use the Firefox browser. In a sample of 200 of individuals, 31 users stated that they used Firefox. Using this data, construct a 99% confidence interval for the proportion of all individuals that use Firefox.

a) What is the lower limit on the 99% confidence interval? Give your answer to three decimal places.

b) What is the upper limit on the 99% confidence interval? Give your answer to three decimal places.

c) Google states that the proportion of all individuals that use Firefox is 0.2. Based on the interval above, does the Google claim seem reasonable?

-Yes because 0.2 is not inside the interval.

-Yes because 0.2 is inside the interval.

-No because 0.2 is not inside the interval.

-No because 0.2 is inside the interval.

d) If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.02 units wide? Be as conservative as possible with your answer!

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91111225

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

According to the center for disease control the mean total

According to the center for Disease Control, the mean total cholesterol for men between the ages of 20-29 is 180 milligrams per deciliter with a standard deviation of 36.2. A healthy total cholesterol level is less than ...

Consider a binomial probability distribution with p03

Consider a binomial probability distribution with p=0.3. Complete parts a through c below. a. Determine the probability of exactly four successes when n=5 P(4)=

A basket contains 5 bananas and 5 apples each of ten people

A basket contains 5 bananas and 5 apples. Each of ten people picks two fruits at random from the basket without replacement. (a) What is the probability that the first people picks one apple and one banana? (b) What is t ...

A random sample ofnbsp19nbspcollegenbspmens basketball

A random sample of 19 college? men's basketball games during the last season had an average attendance of 5,046 with a sample standard deviation of 1,753. a. Construct a 99?% confidence interval to estimate the average ...

Letnbspxnbspbe a random variable that represents the ph of

Let x be a random variable that represents the pH of arterial plasma (i.e., acidity of the blood). For healthy adults, the mean of the x distribution is μ = 7.4.† A new drug for arthritis has been developed. Howeve ...

In a health club research shows that on average patrons

In a health club, research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard deviation of 4.8 minutes. It is assumed that this is a normally distributed variable. Find the ...

Consumer product manufacturers commonly include customer

Consumer product manufacturers commonly include customer satisfaction surveys on product warranty cards that are sent back to the company. An outdoors company redesigned a popular camping tent, and it wants to know wheth ...

A confidence interval for a population mean is to be

A confidence interval for a population mean is to be estimated. The population standard deviation is guessed to be anywhere from 14 to 24. The half-width B desired could be anywhere from 2 to 7. Tabulate the minimum samp ...

A researcher wants to determine if there is a relationship

A researcher wants to determine if there is a relationship between media outlet (social media, newspapers, and radio) and interest in media by population group (youth, young adults, and older adults). What type of statis ...

Suppose a researcher is interested in the number of good

Suppose a researcher is interested in the number of good versus bad dreams that students have during final exam week. The researcher states that p = 0.52 that a student will have a bad dream during final exam week. (a) ...

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