Thursday
October 2, 2014

Homework Help: statistics

Posted by tea on Monday, March 26, 2012 at 12:50am.

A random sample of the houses in a particular city is selected and the level of radon gas is measured for each house in the sample. The values collected are given below in parts per million (ppm). Experience has shown that radon gas level is approximately normally distributed for this population.
4, 8, 13, 6, 7, 3, 9, 8, 11, 8

a) Calculate a point estimate of the population mean of radon gas levels. (5 pts)

b) Construct and interpret a 99% confidence interval for . (6 pts)

c) The city standards for radon call for no more than a level of 6 ppm. From these data, does it appear that the mean radon level for city houses is under 6 ppm? Provide statistical justification for your response. (2 pts)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - A random sample of the houses in a particular city is selected and each ...
Algebra 1 - Can you please check my work? A city planning committee surveys 100 ...
algebra 1 - Circle the most appropriate description. 27.A city planning ...
chemistry - 1)A sample of CO2 gas which weighs 0.85 grams has a volume of 1.30 ...
Statistics - A manufacturing facility produces iron rods whose mean diameter is...
Statistics - City A has 1,000,000 people; City B has 4,000,000 people. Suppose ...
Chemistry - A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume...
Chemistry - A 1.50- gas sample at 735 and 25.0 contains 5.00 radon-220 by volume...
statistics - 25% of the houses in a certain area have swimming pools. if 5 ...
statistics - 7) A final exam in Statistics has a mean of 73 with a standard ...

Search
Members