document.write( "Question 625051: Suppose that a pharmacy wants to estimate the standard deviation of the daily demand for a certain drug. It is known that the daily demand for this drug follows an approximately normal distribution. A random sample of 26 days has a sample mean of 125 orders for this drug with a standard deviation of 10 orders. Find a 90% confidence interval for the population standard deviation of the daily demand for this antibiotic.\r
\n" ); document.write( "\n" ); document.write( "What is the lower limit of the 90% confidence interval?
\n" ); document.write( "What is the upper limit of the 90% confidence interval?\r
\n" ); document.write( "\n" ); document.write( "I'm pretty lost with statistics and am looking for a tutor I can understand, but any help would be appreciated. Thank you in advance!
\n" ); document.write( "

Algebra.Com's Answer #393267 by oscargut(2103)\"\" \"About 
You can put this solution on YOUR website!
Hi, the details are a bit long but i put the answer here\r
\n" ); document.write( "\n" ); document.write( "Lower = 122.47\r
\n" ); document.write( "\n" ); document.write( "Upper: 127.53\r
\n" ); document.write( "\n" ); document.write( "The results are rounded to 2 dp\r
\n" ); document.write( "\n" ); document.write( "If you have any doubt or if you have more problems my e-mail is: \r
\n" ); document.write( "\n" ); document.write( "mthman@gmail.com
\n" ); document.write( "
\n" );