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A car company says that mean gas mileage for its luxury sedan is at least 21 miles for each gallon (mpg). You believe the claim is incorrect and find out that a random sample of five cars has a mea
The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and the standard deviation of 2
Shaver Manufacturing, Inc., offers dental insurance to its employees. A recent study by human resource director shows the annual cost per employee per year followed the normal probability distributi
You interview the random sample of 50 adults. The results of survey show that 48% of the adults said they were more likely to purchase a product when there're free samples. At a = 0.05, can you refu
Calculating the linear regression model using the excel. Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R)
Input the Y values in the Y range & the X values in the X range. Make sure the confidence level box at 95%.
Physical Science Assessment Tests On the physical science assessment test, the scores of random sample of 22 eighth grade students have the standard deviation of 27.7.
Calculating correlation using Scatter diagram.An auto insurance company reported the following information regarding the age of a driver and number of accidents reported yesterday.
Salaries employment information service says that standard deviation of annual salaries for public relations managers is at least $14.500. The annual salaries for 18 randomly selected public relatio
Forty percent of the homes constructed in the Quail Creek area include a security system. But assume there are 10 homes in the Quail Creek area and four of them have a security system.
Consider following probability distribution function. Find out P(X > 3)? Find out P(2 < X < 5)?
Probability using Binomial distribution. The Bank of Hawaii reports that 7 percent of its credit card holders will default at some time in their life. The Hilo branch just mailed out 12 new cards to
Probability using Binomial distribution. Dr. Richmond, a psychologist, is studying the daytime television viewing habits of college students.
A recent study conducted by Penn, Shone, and Borland, on behalf of LastMinute.com, revealed that 52 percent of business travellers plan their trips less than two weeks before departure. The study is
Assume you know that number of complaints coming in a phone center averages 4.2 every ten minutes. Suppose that the number of calls follows Poisson distribution. Find out the probability that there
The joint probability distribution of variables X and Y is shown in the table below, where X is the number of tennis racquets and Y is the number of golf clubs
In testing lethal concentration of chemical found in polluted water, researchers have determined that certain concentration will kill 20% of the fish which are subjected to it for 24 hours. Find out
Discuss relationship between total gross and opening gross total gross and number of theaters total gross and week in top 60 what each eqation aids us find about the stats on movie did well in this
A filling procedure is supposed to fill jars with 16 ounces of grape jelly. Specifications state that each jar should contain between 15.95 and 16.05 ounces. A jar is selected from procedure
A ski resort profits $1,100,000 during the good winter with lots of snow. The resort has loss of $300,000 otherwise. The resort's historical climate data recommends that the probability of the good
An employee gives a pre-employment evaluation to a large group of applicants. The scores are normally distributed with a mean of 154 and a standard deviation of 18.
By using the Binomial Distribution, find out the probability that if Air Northeast books 24 people on flight, not enough seats will be available for all booked passengers.
Suppose that a student who guesses the answer will be correct with the probability 1/m, where m is the number of multiple choice alternatives. Find out the conditional probability that a s
A manufacturing operation employs two production lines to assemble electronic fuses. Both lines generates fuses at the same rate and generally produce 2.5% defective fuses. But, production line 1 re