teachers grade a

Ms. Clara, the class teacher of 8th Grade prepared a record of the students and the country of their origin. The recordings are given. Find the percentage of students with country of origin as West Indies and South America. => 0.28% and 0.36% or 25% and 50% or 0.2% and 0.09% or ..

There are 6 teachers for every 240 students in a school. Identify the ratio of students to teachers in three ways. => 1 : 40, 1 to 40, and 1 40 or 41 : 1, 41 to 1, and 41 1 or 40 : 1, 40 to 1, and 40 1 or 42 : 1, 42 to 1, and 42 1..

A school teacher estimated that 80% of the students can score grade A in the final test. He selected a random sample of 140 students after the final examination and observed that 115 students scored grade A. At α = 0.01, find the test value and comment on the ..

A school has 15 teachers out of which 9 are male. A team of 9 teachers is to be formed with 5 female teachers. In how many ways can the team be formed? => 776 or 746 or 756 or 766..

The scatter plot shows the number of teachers hired each year from 1980 through 1984. How many more teachers were hired in the year 1983 than those in 1984? => 10 or 5 or 15 or 20..

There are 5 teachers for every 20 students in a class. Which one of these represents the ratio of students to teachers? => 1 : 2 or 2 : 1 or 1 : 4 or 4 : 1..

Danielle wants to attend dance and music classes after school. There are 4 dance teachers and 9 music teachers available to choose. How many different choices are available for Danielle to choose the two teachers? => 4 or 9 or 36 or 37..

Identify the concept discussed. There are 5 teachers for every 20 students in a class. => proportion or rate or not enough information or ratio..

The circle graph represents the way in which 77 teachers were allotted for different subjects. Find the number of teachers who were not allotted Social Studies. => 64 or 77 or 67 or 13..

The average teacher's salary in a school X is $30,000. The distribution is assumed to be normal with standard deviation equal to $5,000. If 64 teachers are selected at random, then find the probability that the mean teacher's salary is less than $28,000. => 99.93% or 7..