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Question: A study to see whether birds remember color was done by putting birdseed on a piece of red cloth and letting the birds eat the seed. Later, empty pieces of cloth of varying colors (red, purple, white, and blue) were displayed. The birds headed for the red cloth. The researcher concluded that the birds remembered the color.
a. Using the terminology in this chapter, give an alternative explanation for the birds' behavior.
b. Suppose 20 birds were available and they could each be tested separately. Suggest a better method for the study than the one used.
question assume that female students heights are normally distributed with a mean given by micro 64.2 in. and a
A police department reports that the probabilities that 0, 1, 2, and 3 burglaries will be reported in a given day are 0.49, 0.42, 0.06 and 0.03, respectively. What is the mean of the given probability distribution?
the cpu of a personal computer has a lifetime that is exponentially distributed with a mean lifetime of six years. you
professor economises has 184 students in her introductory economics class. suppose that the scores on the final exam in
An important theme throughout this course has been communication competence, which is the ability to choose a communication behavior that is both effective and appropriate for a given situation.
Conditions 2 and 3 needed for the sampling distribution of P^ to be approximately normal are met because this result is based on a large random sample of adults. Explain how Condition 1 is also met.
ITBS scores The Normal distribution with mean m = 6.8 and standard deviation s = 1.6 is a good description of the Iowa Test of Basic Skills (ITBS).
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
Calculate the sum of squared residuals, the total sum of squares, and the coefficient of determination.
business firm makes and sells a steel product. product costs 5 to produce. product sells for 20. product requires 4
three balls are randomly chosen without replacement from an urn containing 4 red 3 white and 3 blue balls. suppose that
What are the null and alternative hypotheses to test if the new battery has longer life than the old battery? Draw a conclusion for the hypothesis test. Make sure you state your conclusion in the context of the problem.
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