http://forum.lowyat.net/ Fri, 24 Jul 2026 19:15:59 +0800 FeedCreator 1.7.2 http://forum.lowyat.net/topic/3475946 1. There is an average of 0.5 emails received by a user per 3 hours.<br />Probability that between 2 to 5 emails are received in 12 hours is 0.270<br /><br />true or false?<br /><br />2.In a group of n pre-school kids , there is an average of 3 are wearing glasses with variance is 1.2.<br />find the value of n and p, where p is the probability that a pre-school kid is wearing glasses whn choose at random.<br /><br />3. The standard deviation of number of absentees per class in a week is 2 . What is the expected value of number of absentees per week ?<br /><br /><br />Pls help me solve and explain if can . THX&#33; alphonse195 Education Essentials Tue, 20 Jan 2015 22:40:04 +0800 http://forum.lowyat.net/topic/3458223 I lost my phone ...== and i need to buy a NEW 1...any suggestion ? <br />budget Around RM500 or below.... alphonse195 Mobile Phones and Tablets Fri, 02 Jan 2015 18:08:52 +0800