high school library standards

40% of the people in a town X used the library last year. If 750 people are selected at random, then what is the standard deviation of the number of people who used the library last year? => 13.4 or 180 or 300 or 134..

Since Haber's process proceeds with a decrease in volume, it is favored by high pressure. In actual practice, a pressure of 200 - 900 atmospheres is employe..

Which among the following statement(s) is/are correct? I. An outlier is an extremely high or an extremely low data value when compared with the rest of the data values. II. The mean and standard deviation of a variable are not affected by an outlier. III. The interquartile range..

As a result of sustained research in agriculture, many high yielding varieties /hybrids have been released in our countries (India 2000). In rice, more than 600 high yielding, early maturing, dwarf disease resistant varieties have been evolve..

Density of population in many cities and urban centers is so high that their respiration has caused imbalance in air composition. Their constant intake of oxygen and release of carbon dioxide has the potentiality to change the composition of ai..

Halogens have very high electron affinity values and therefore, have very strong tendency to gain an electron. Thus halogens are very reactive elements due to their low dissociation energies and high electron affinity values. As clear from the values of bond dissociation energi..

High Yielding Varieties / Hybrids - As a result of sustained research in agriculture, many high yielding varieties /hybrids have been released in our countries (India 2000). In rice, more than 600 high yielding, early maturing, dwarf disease resistant varieties have be..

As a result of sustained research in agriculture, many high yielding varieties /hybrids have been released in our countries (India 2000). In rice, more than 600 high yielding, early maturing, dwarf disease resistant varieties have been evolved. Many rice hybrids such as ProAgro ..

Ionic compounds have high melting and boiling points. A large amount of energy is required to break the crystal lattice, because the ions are held together by strong electrostatic forces of attraction. The variation in melting point depends upon the charges on the ions and ionic radii. T..

Beyond saturation point, light intensity reduces photosynthesis. This effect is called solarization. It can be caused by photo-inhibition and photo-oxidatio..