teachers answer book for consumer mathematics

The cost per load (in cents) of 35 laundry detergents used by a consumer organization are given. Cost per load Number of detergents 13 - 19 2 20 - 26 7 27 - 33 12 34 - 40 5 41 - 47 6 48 - 54 1 55 - 61 0 62 - 68 2 Which graph represents the frequency polygon for the given data? => Graph 1 ..

A teacher decides to examine the hypothesis between the test scores and the overall grade point average for each student for the whole year. Find t test value and test the significance of the correlation coefficient using the P-value method. r = 0.43, ∝ = 0.02, n = 5. => 0.0256, sign..

It is reported by a social organization that students watch 2.5 movies in a month in movie theaters on an average. To test this report, a school teacher collected number of movies watched by 40 students. At α = 0.01, what is the test value? Is the report of the social organization c..

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 incorrectly is less..

A teacher wishes to know whether there is any relationship between the hours of study and the test scores of the students. Ten students were selected randomly and were given a test. Test the hypothesis that there is a significant relationship between hours of study and test scores at &alp..

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 1.5 1.6 2 1.6 1.3 1.4..

1) Represent the statement some teachers are scholars by using a venn diagra..

Josh drinks 100 mL of lemonade every morning and 1 / 10 of 1L of milk before going to bed. Which one does he drink more? => Josh consume both in equal quantities. or Lemonade or Milk..

The graphical representation of data makes the reading more interesting, less time-consuming and easily understandable. The disadvantage of graphical presentation is that it lacks details and is less accurate. In our study, we have the following graphs: 1. Bar Graphs 2. Pie Charts 3..

The graphical representation of data makes the reading more interesting, less time-consuming and easily understandable. The disadvantage of graphical presentation is that it lacks details and is less accurate. In our study, we have the following graphs: 1. Bar Graphs 2. Pie Charts 3..