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A researcher randomly assigned 48 children to observe a short clip depicting either their favorite superhero, a parent, a teacher, or no person at all (n = 12 per group). If SSBG = 40 and SSWG = 120, then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?
Use an α of your choice, and determine whether statistical evidence indicates a change in customer satisfaction. If you determine that a change did occur, state whether you believe customer satisfaction has improved or deteriorated.
The National Safety Council reported that air bag-related fatalities dropped to 18 in the year 2000. Compute the expected number of air bag-related fatalities.
Find and sketch the probability density function of the functions given.
Determine a simple algebraic relationship between the negative binomial probability P(x) and the binomial probability for the probability of n successes in x trials.
Explain the limitations presented by the study population and sample size used. Support your explanation with examples from the study. Discuss the advantages and disadvantages of the type of statistical analysis used.
Use the decision rule associated with part (a) and a range of selected assumed values for µ in constructing the power curve for the test.
Anemia Hemoglobin is a protein in red blood cells that carries oxygen from the lungs to body tissues. People with less than 12 grams of hemoglobin.
Suppose that you want to incorporate interaction between age and type of car. What additional predictors would be needed to accomplish this?
Any person, who has not smoked a single tobacco product in life, is diagnosed with lung cancer.
What is the difference between statistical significance and practical significance? What is a type I and type II errors in hypothesis testing? What would be examples of each? Explain
Two cards are drawn from a deck of cards without replacement of the first one. Find the probability of selecting two red cards.
the lifetime in hours of a certain kind of radio tube is a random variable with the probability density function given
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