Friday
March 6, 2015

Homework Help: statistics

Posted by Ashley on Wednesday, March 23, 2011 at 10:39am.

a simple random smaple of 55 mathematics teachers were timed as they completed sudoku puzzles. Their mean completion time was 20.3 minutes. The population standard deviation is assumed to be 12 mintues and times vary normally. Find 99% confidence interval for the mean time for completing a sudoku puzzle by a math teacher.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - A basketball scout randomly selected 144 players and timed how long...
business statistics - For one of the tasks in a manufacturing process, the mean ...
statistics - a basketball scout randomly selected 144 players and timed how ...
Statistics - Service times for customers at a post office follow some right-...
statistics - Times for a surgical procedure are normally distributed. There are ...
statistics - A bus company official wanted to estimate the mean time for the ...
statistics - How many infants should you sample if you want a margin of error of...
Statistics - How large a smaple from a N(80,20) population is needed so that the...
statistics - An accounting firm is planning for the next tax preparation season...
Statistic - The amount of time it takes to take your order at the local Whaters ...

Members