287 PROBLEMS 5.1 algebra according to a new method. Find a 90% confidence interval for the difference in achievement scores expected from the two methods. Students' Achievement Scores 80 78 ১), and Method ledger, 84 69 79 72 68 Present 70 72 73 68 (1975). 60 64 New girls, with the following observed weight losses. Find a 90% confidence interval for mean difference in effectiveness of the two diets. Diet A was given to four overweight girls and diet B was given to five other overweight 96ाळ), 1953). Kean 4. AREYER Weight Losses (pounds) 7, 2, -1, 4 6, 5, 2, 8, 3 Diet dges A itzer В telescopic sight improves the ability to hit a target under twilight conditions. Group A is group 972), 5. Eight volunteers for an experiment are divided randomly into two groups, to see if a given sights. After a learning period they are given a shooting test at twilight. These are their B has the same kind of rifle but with open rifles with telescopic sights, while scores (100 is perfect). 85 88 Group A: Group B: 93 96 77 80 83 89 an in up What do you conclude? 6. a wooded area, and a team of observers is sent out to find them. The team reports the distance at which they first sight each tent (true sightings only) until all 20 tents are found. The purpose of the study is to determine whether the patterned camouflage is more difficult to detect than the plain camouflage. The distances at which each tent is detected are Ten tents using plain camouflage and 10 tents using patterned camouflage are set as follows. reported Distance (meters) 25, 28, 16, 34, 38, 21, 29, 43, 32, 36 26, 12, 16, 21, 20, 14, 10, 18, 22, 20 Type of camouflage Plain Patterned (a) Perform a hypothesis test. (b) Find a nonparametric 95% confidence interval for the difference in mean detection distances. eT PROBLEMS 1. Let Note that there are mn pairs in all. Show that S and T satisfy the relationship equal the number of pairs (X, Y) in which Xi exceeds Y (counting ties as one-half). S =T-n(n + 1) 2 n(n+ 1) What statistic seems reasonable to use as an estimate of P(X> Y)?

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear re…

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.