Basics and confidence intervals

Assignment Help Basic Statistics

Reference no: EM13104664

The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. For premium grade, 14 out of 105 samples failed (They didn't meet ASTM specifications and the FTC Octane posting rule). Therefore, how many samples would be needed to create a 99% confidence interval that within 0.02 of the true proportion of premium grade fuel-quality failures?

Reference no: EM13104664

Questions Cloud

What is the initial speed of the second stone : A stone is dropped into a river from a bridge at a height h above the water. Another stone is thrown vertically down at a time t after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second sto..

Confidence interval-balance of defaulted loans : A federal bank examiner is interest in estimating the mean outstanding defaulted loans balance of all defaulted loans over the last three years. Calculate a 90% confidence interval for the mean balance of defaulted loans over the past three years.

Express answer in terms of all the variables d, t, and v : Find the magnitude of , the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, t, and v.

What is the electric flux through one surface of tetrahedron : An object with a charge of 0.920 µC is placed at the center of a regular tetrahedron with 4 equivalent surfaces. What is the electric flux through one surface of the tetrahedron?

Basics and confidence intervals : The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. For premium grade, 14 out of 105 samples failed

Recognizing literary form and features about jesus : Recognizing its literary form and features, its structure, and conventions of behavior which inform what it says about Jesus and why he is significnat for Christians' lives.

How fast is the airplane moving : A 0.58 kg toy airplane is suspended from the ceiling by a 1.6 m long cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical.

Confidence interval for mean-engineers : A random sample of 50 engineers of a large technology company that the sample mean is 34.4 year. assume that the population standard deviation is 8 years.

What is the acceleration due to gravity on this planet : A fully equipped astronaut has a mass of 140 kg. If the astronaut has a weight of 675 N standing on the surface of a planet, what is the acceleration due to gravity on this planet?

User Account

All Pages