supporting proposition 8

A teacher claims that the variance of the final examination scores in her class is larger for male students than for the female students. The data from the final exam for the last semester reveals that the standard deviation of the scores for 30 males is 6.8 and that of 20 females is 4.6...

Question: Said the frog 'I tried to teach her but she was a stupid creature' , do you agree with the Frog's view. Give two reasons to support your answer. Answer: Yes, I agree because the bird was not a good judge of character and could not see through the frog. She did not ..

The distribution of maximum load in short tons (1 short ton = 2000 lb) supported by certain cables produced by a company is shown. Find the mode and mean of the maximum load of the cables. Which is greater, mean or mode? Maximum load No. of cables 9.3 - 9.7 3 9.8 - 10.2 5 10.3 -..

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..

The snowfall (in inches) from a random sample of 10 counties in U.S. in the month of January are as follows. 3 5 4 2 4 6 2 2 1 4 At α = 0.05, test the hypothesis that the standard deviation of snowfall is less than 2.8 inches. What is the chi-square test value? [Assume that the vari..

Nearly 29000 Km of rivers are available in our country supported by nearly 1.1 lakh km of subsidiary water channels. Further, inland fisheries can also be taken up in 8 lakh hectares of water bodies (tanks and ponds). But not even 15 percent of such a inland aquatic vast resourc..

These are grown in ecologically fragile areas. Felling of trees and grazing of cattle are prohibited in these forests. 6) A special function of tree plantation, Van Mahotsava, is held each year in February and July since 1950 to propagate the idea of forest conservation. 7) Many International agen..

Reforming or aromatisation involves the conversion of open chain (aliphatic) hydrocarbons and/or cycloalkanes in the presence of a catalyst, into aromatic hydrocarbons (arenes) containing the same number of carbon atoms. Aromatisation involves reactions of the type, dehydrogenation, cyclisation, a..

Compounds always contain a definite proportion of the same elements by mass. Water as a compound, always contains hydrogen and oxygen in the ratio 1:8 by mass. The properties of compounds are totally different from the elements from which they are formed. For example, while water is ..

Similarly, India is bestowed with 7520 km of coastline with 20 lakh square km of exclusive economic zone for fishing around coastline. High priority is being offered to marine fisheries development with the support for production, marketing, canning the fishes as well as offering suitable..