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in times of stress some people hyperventilate to the point of dizziness and fainting to determine whether this behavior
1 a random sample of 25 precocious readers is drawn and their family backgrounds carefully studied in 40 of the cases
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selected at random 250 married couples are given sample ballots containing the names of all candidates for contested
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in a random sample of 500 voters from a northern county in west virginia 265 of the voters indicate that they will vote
in a certain large suburban housing development all the houses were built at approximately the same time with the same
an airline is experiencing a median delay in arrival of 27 minutes and introduces new measures in an effort to make
1 the symbol b represents the probability of rejecting h0 when h0 is false2 the power of a test of hypothesis is 1 2 a3
1 if an experiment is well designed and both a and b are small it should be a good experiment2 even when a correct
1 other things being equal the greater the level of confidence desired the wider will be the confidence interval2
in probability was used to make decisions and odds ratios could have been used to further support the decisions to do
if 60 of the population of the united states need to have their vision corrected we say that the probability that an
the dice game about which pascal and de fermat were asked consisted in throwing a pair of dice 24 times the problem was
sir francis galton 1822- 1911 was educated as a physician but had the time money and inclination for research on
1 put the example of the cereals in the framework of the scientific method elaborating on each of the six steps2 state
in each of the research situations described below determine whether the researcher is conducting an experiment or a
in each of the following surveys what besides the mechanism under study could have contributed to the resulta an
time magazine once reported that el pasos water was heavily laced with lithium a tranquilizing chemical whereas dallas
1 to say that the null hypothesis is rejected does not necessarily mean it is false2 in a practical situation the null
1 in the total process of investigating a question the very first thing a scientist does is state the problem2 a
1 if in an experiment psuccess 13 then the odds against success are 3 to 12 one of the main reasons for using random
1 a conclusion reached on the basis of a correctly applied statistical procedure is based solely on probability2 the
1 the expected number of flaws in 20-ft intervals of wire is 50a what is the number of discrete events feet or flawsb
additives such as trace minerals antibiotics vermifuges and insecticides are incorporated into animal feeds in parts