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Question: Thinking about shape. Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or skewed? Explain why.
a) The number of speeding tickets each student in the senior class of a college has ever had.
b) Players scores (number of strokes) at the U.S. Open golf tournament in a given year.
c) Weights of female babies born in a particular hospital over the course of a year.
d) The length of the average hair on the heads of students in a large class.
Would he be justified in concluding that walking slowly may cause high cholesterol or that high cholesterol may influence walking speed? Explain why or why not.
an advertising company is interested in determining if there is a difference in the mean sales that will be generated
An experiment was conducted to compare the reaction times of a group of 10 volunteers (from a psychology class) to a bright light versus the sound of a loud air horn. Find a 95% confidence interval for µD = µX - µY .
a sample of alzheimers patients is tested to assess the amount of time in stage iv sleep. the number of minutes spent
At the 0.005 level, evaluate the effectiveness of the new ball in increasing distance. Using the appropriate statistical table, what is the approximate p-value for this test?
Can you explain how to do this in excel? What is season indices forecast next two forecast periods What is the mape? What smooth/deseasalized trend line?
Given two outcomes, A and B, state their relationship as a conditional probability using a "given" statement.
a random sample of 500 connecting rod pins contains 65 nonconforming units. estimate the process fraction
A jar contains five red marbles and three green marbles. A marble is drawn at random and not replaced. A second marble is then drawn from the jar. Find the probability that the first marble is red and the second marble is green
How many variables are in this dataset?- What is an observational unit in this dataset?- What is the sample size for the dataset?
Identify the fallacies of relevance committed by the following arguments, giving a brief explanation for your answer. If no fallacy is committed, write "no fallacy."
Test at the 5% significance level whether the mean evacuation time is smaller at closing time than during fire drills.
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