Is the concentration of ultrafine particles dangerous

Assignment Help Basic Statistics

Reference no: EM131431347

Is the concentration of ultrafine particles dangerous? In Kansas City, Missouri, suppose fifteen 24-hour periods are selected at random and the concentration of ultrafine particles is carefully measured over each period. The summary statistics are x‾ = 10.76 mg/m³ and s = 4.7 μg/m³ .

a. Find a 95% confidence interval for the true mean level of ultrafine particles in a 24-hour period in Kansas City.

b. Is there any evidence to suggest that the mean level of ultrafine particles in a 24-hour period in Kansas City is over the EPA standard of 35 μg/m³?

Reference no: EM131431347

Questions Cloud

Who do you think bears the burden of such taxes : It is often asserted that gasoline taxes used to finance highway construction and maintenance are fair because they make users of roads pay for them. Who do you think bears the burden of such taxes?

Confidence interval for the true proportion of people : Find a 99% confidence interval for the true proportion of people who exhibit addictive behavior after eating a low-carbohydrate meal.

List two signs or symptoms of breast cancer : How many people in the US get cancer each year? What causes cancer? Since there are many different types of cancer, how is cancer named? List two signs or symptoms of breast cancer. Can males develop breast cancer?

Compare and contrast this madness with don quixotes : Hamlet is very much a play that focuses in the interior struggles of one individual: Hamlet, but how are Hamlet's struggles representative of the greater struggles Demark faces, and subsequently, the ones England faces at this time?

Is the concentration of ultrafine particles dangerous : Is there any evidence to suggest that the mean level of ultrafine particles in a 24-hour period in Kansas City is over the EPA standard of 35 μg/m3?

Consider what your study suggests about the cultures : Compare the Tang Empress Wu Zetian (also known as Empress Wu or as Wu Zhao; ruled China around 690-705 AD) with either the Pharaoh Cleopatra (ruled Egypt around 51-31 BC) or the Pharaoh Hatshepsut (ruled Egypt around 1478-1458 BC). You may also pr..

What do you think it implies about the design of tax policy : Do you think this is true? If it is, what do you think it implies about the design of tax policy?

What is the true economic depreciation : What is the present discounted value of these depreciation allowances? (Cars are treated as five-year assets.)

What is probability of newborn weighing at least 384 pounds : if, indeed, the mean weight for new born elephant calves is 225 pounds with a standard deviation of 45 pounds, what is the probability of a newborn weighing at least 384 pounds?

User Account

All Pages