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Income tax returns
In a recent year, the Internal Revenue Service received 142,978,806 individual tax returns. Of these, 17,993,498 reported an adjusted gross income of at least $100,000, and 392,220 reported at least $1 million.
If you know that a randomly chosen return shows an income of $100,000 or more, what is the conditional probability that the income is at least $1 million?
please answer the question below focused on the topic of statistics for business.discuss the similarities and
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?
Females aged 50 and over are approximately normally distributed with a mean of 250 mg/dL and a standard deviation of 30 mg/dL. What is Mrs. Brown's cholesterol level?
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
If there were 18 million users of handheld data devices of this kind on that day, what is the probability that a randomly chosen user could not use a device?
Nationwide, the average time until a electric utility customer service representative answers a call is 260 second. The Gigantic Kilowatt Energy Company randomly sampled 30 calls and found that, on average, they were answered in 227 second with a ..
You use it to call 250 randomly chosen residential telephones in Florida. Of the registered voters contacted, 33% are registered Democrats. Is each of the boldface numbers a parameter or a statistic?
How to decide whether your test should be one-tailed or two-tailed/directional or non-directional. Gives an example of each type, with an explanation of why it is/is not directional.
From two censuses of a population's occupations, carried out in 2000 and 2010, the following figures were obtained (all values are in ‘000s).
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
let x be a continuous random variable whose probability density function isfxx3 4for an interval 0 lt x lt c.what is
The distribution is shown here, where the random variable x is the number of days between the placement of the replenishment order and the receipt of the item.
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