Mathematics, 19.11.2019 06:31 auntlynard1843
Aresearcher conditions rats to fear a tone that was sounded just prior to a brief shock. to measure fear following this conditioning, she records the number of lever presses by each rat in the presence and in the absence of the tone. it was hypothesized that reduced lever pressing in the presence of the tone was evidence for a conditioned fear response in rats. if the researcher tested this hypothesis at a .05 level of significance (two-tailed test), then what is her decision if she computest = ñ2.842in a sample of 8 rats? a) retain the null hypothesis; there is evidence for a conditioned fear response. b) retain the null hypothesis; there is not evidence for a conditioned fear response. c)reject the null hypothesis; there is evidence for a conditioned fear response. d) reject the null hypothesis; there is not evidence for a conditioned fear response.
Answers: 3
Mathematics, 21.06.2019 17:00, marciekinser
Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?
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Mathematics, 21.06.2019 19:30, jrassicworld4ever
Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
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Mathematics, 21.06.2019 20:00, dbn4everloved
Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?
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Aresearcher conditions rats to fear a tone that was sounded just prior to a brief shock. to measure...
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