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Tomato plants were grown in a greenhouse under treatment conditions consisting of combinations of three soil types (Factor B) and two fertilizers (Fac tor A). Two plants were grown under each of the six treatment combinations. The (coded) yields of tomatoes are recorded below.
Factor B
Factor A
1
6
10
4
8
(a) Make an interaction plot for these data.
(b) Based on the plot in part (a), what model would you suggest?
(c) Find estimates for all the parameters in your model.
Evaluate the union's claim. Include the hypotheses (both null and alternate), alpha, test statistic (highlight where it is calculated on your spreadsheet), decision, conclusion.
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The main goal of correlation research is ______________
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If a null hypothesis is rejected at a significance level of .01, it will ______ be rejected at a significance level of .05
A sample of n= 16 scores has a mean of M = 45 and SS = 960. Calculate the sample standard deviation (s) and the estimated standard error for the sample means (SM).
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Psychologists once measured 77 variables on a sample of schizophrenic people and a sample of people who were not schizophrenic. They compared the two samples using 77 separate significance tests.
physicians at a clinic gave what they thought were drugs to 940 patients. although the doctors later learned that the
q1. a researcher hypothesizes that individuals who listen to classical music will score differently from the general
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