# looking for someone to varify my work please

Most popular questions and responses by looking for someone to varify my work please-
## List all the elements of the following sets.

Let and List all the elements of the following sets. A = {1,2} and B = {0,1,2} A x A A x B B x A A x B x A how do i do this?

*asked on April 13, 2010* -
## statistics

An experimental egg farm is raising chickens to produce low cholesterol eggs. A lab tested 12 randomly selected eggs and found that the mean amount of cholesterol was x = 186 mg. The sample standard deviation was found to be s = 19.0 mg on this group.

*asked on April 6, 2010* -
## statistics

Use the Standard Normal Distribution table to find the indicated area under the standard normal curve. Q1: Between z = 0 and z = 2.24 A1: 0 = 0.5000 2.24 = 0.9875 0.9875 – 0.5000 = 0.4875 Q2:To the left of z = 1.09 A2: 0.8621 Q3: Between z = -1.15 and z

*asked on March 27, 2010* -
## statistics

The response of a sample of 1620 people who were asked if the air quality in their community is better or worse than it was 10 years ago are shown below. Find the mean, median, and mode of the data. Better: 323, Worse: 333, Same: 420 Question: Find the

*asked on April 26, 2010* -
## statistics

Section 5.3: Normal Distributions: Finding Values Answer the questions about the specified normal distribution. Q1: The lifetime of ZZZ batteries are normally distributed with a mean of 265 hours and a standard deviation ó of 10 hours. Find the number of

*asked on March 28, 2010* -
## statistics

The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 48 lasted more than 1000 hours. Find the point estimate for the population proportion,

*asked on April 6, 2010* -
## statistics

Use the method specified to perform the hypothesis test for the population mean µ. The highest acceptable level of pesticide found in quail has been limited to 0.35 parts per million (ppm). A hunting organization measured the level of the pesticide found

*asked on April 13, 2010* -
## statistics

1. The new Twinkle bulb has a standard deviation σ = 34 hours. A random sample of 77 light bulbs is selected from inventory. The sample mean was found to be x= 492 hours. Question: Find the margin of error E for a 90% confidence interval. Round your

*asked on April 6, 2010* -
## statistics

Question: A standard placement test has a mean of 105 and a standard deviation of ó = 13. Determine the minimum sample size if we want to be 99% certain that we are within 3 points of the true mean. Answer: N = ( zc ó/E)^2 = (2.575 x 13/3)^2 = 121

*asked on April 6, 2010* -
## statistics

Find the critical value zc necessary to form a confidence interval at the given level of confidence. a. 90% = 1.645 b. 85% = 1.8025

*asked on April 1, 2010*