4 teachers

A test on English was conducted on 20 students. Number of words misspelled by them are : 10 15 4 8 19 6 2 10 17 3 1 16 9 5 14 13 15 6 9 12 At α = 0.05, is there enough evidence for the teacher to conclude that the standard deviation of the number of words spelled incorrect..

Educational survey reports that the variance of the time spent per day on reading or doing homework of the high school students is less than 0.58 hours. A teacher collected the time (in hours) spent by 20 students as shown. 2 1.7 3.2 2.5 1 1.2 1.8 0.8 1.4 1.8 2.1 2.4 1..

A teacher decides to examine whether a student's test score are related to his/her classroom performance. At the end of the academic year, she computes a correlation between the test score and the grade point average for the whole year. The data is provided here. Compute the correlation c..

Question: In his younger days Ali was a 1. teacher 2. coach man 3. hunter 4. tailor Answer: ..

Question: What did the frog claim to be? 1. A great teacher 2. The owner of the sumac tree 3. A publisher 4. The king of the Bog Answer: ..

Question: You receive the following circular at school. SARASWATI VIDYA MANDIR, 14, GENERAL CARIAPPA MARG, MADIKERI. 7th Aug 2002 Students of classes IX and X are being taken on a three-day educational tour to Mumbai and Goa from 1st to 3rd September by a chartered bus. The tour charges are..

Frequency Distribution - A teacher gave a test to a class of 26 students. The maximum mark is 5. The marks obtained by the pupils are: Such data as above is called ungrouped (or raw) data. We may arrange the marks in ascending or descending order. The data so represented is called an arra..

Question 1 - Question: Are we raising techno tots? The conversation on swirling wine the right way, the perils in investment banking and the heated debate on what should be done with Salman Khan was certainly not to four-year-old Nikhil Reddy's liking. Boredom clouding his impish face, he..

Now the only unbalanced one is Chlorine. On the left hand side, there are 16 Cl. On the right hand side, there are 2 Cl in 2 KCl + 4 Cl in 2 MnCl 2 , making total of 6(2 + 4). So 10 more Cl are to be accounted. So place 5 in front of Cl 2 to make it 10 (5 x 2). It is not possibl..