1

General Science / Find x-intercept and y-intercept for the function: f(x)=9x^2+12x+4.

« on: 10/11/2011 03:01:47 »

Look at the function: f(x)=9x^2+12x+4. Please find x-intercept and y-intercept.


Please stop posting links to commercial sites or you will be banned - mod

2

General Science / can you answer the most difficult math question

« on: 09/11/2011 06:41:59 »

Use for Questions 1 and 2 A grocery store takes a random sample of 200 customers. The average check-out time is 4 minutes with a standard deviation of two minutes. 1. The standard error of the mean is? 2. The 95% confidence level for the true average check-out time is? 3. A random sample of 244 observations has a mean of 10, a median of 12 and a mode of 33. The population deviation is known to equal 2.8. the 95.44% confidence interval for the population mean is? 4. The following random sample was collected: 22 33 44 6 The 80% confidence interval for the mean is?
http://www.spamanswer.com/Questions/QuestionInfo_10432.html [!] [!] [!]