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In an experiment on magazine advertisements, a researcher is examining visual displays to determine if one is more memorable. Only a small number of subjects will be avaliable for study. Should the researcher use a repeated measures design or independent samples design? and Why?
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 12 patients using the drug is selected. Find the probability that: exactly three will have this mild side effect.
Develop the hypothesis for a 3x3 factorial design (ANOVA). The experiment revolves around the effect of music and chocolate on words remembered. The first IV is the effect of music with 3 conditions
What is our decision regarding the differences between the observed and expected frequencies if the critical value of chi-square is 9.488 and the computed value is 6.079?
Test the manager's claim at 5% and 1% significance level tests.
For the following data calculate the mean and standard deviation for the sample. Then calculate both a 95% and a 99% confidence interval for the popular mean.
Determine the setting for the mean so that no more than 1% of the cans of paint will be unacceptable.
suppose 80 of the college football fans root for the home team. if 400 fans who attended a college football game last
a die is rolled twice. what is the probabilty that the sum of the faces is greater than 7 given thata the first outcome
a survey of 25 randomly selected customers found the ages shown in years. 28 36 40 26 33 24 11 47 23 33 46 38 35 14 33
Explain in words general pattern of correlation is statistically important.
Examine the histogram of the standardized residuals for the regression of annual earning on annual hours worked among Registered Nurses below. Which conclusions can be made about the model using this graphic?
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
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