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Recall that Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Now suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say you took a random sample of n = 215 numerical entries from the file and r = 52 of the entries had a first nonzero digit of 1. Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. What is the value of the sample test statistic? (Round your answer to two decimal places.)
What is the level of measurement for the variable, "political ideology" measured as "Very Conservative", "Conservative","Moderate", "Liberal" and "Very Liberal".
A random variable has the density curve as in the graph below. Find The height of the density curve?
To recognize the width of the confidence interval.As the confidence level \"1 - α\" increases, the width of the confidence interval.
Construct a 95% confidence interval for the proportion and calculate the P value for the given test.
The manager of a department store wants to determine what proportion of people who enter the store use the store's credit cards for their purchases.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
Based on these data, determine the 95 percent confidence interval estimate for true population mean?
What is the probability of a false negative test (the probability that a person having muscular distrophy tests negative)?
Develop a scatter diagram for the data and write a brief summary.
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
What is the probability of selecting an accounting major, given that the person selected is a male?
Re item 4, assume the critical value for this test is 4.92, and you obtain a computed statistical value of 7.45. Is there evidence to refuse null hypothesis? Describe why or why not?
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