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Question: According to the Federal Poverty Measure 12% of the U.S. population lives in poverty. The governor of a certain state believes that the proportion there is lower. In a sample of size 1,550, 163 were impoverished according to the federal measure.
a. Test whether the true proportion of the state's population that is impoverished is less than 12%, at the 5% level of significance.
b. Compute the observed significance of the test.
What value will standard deviation σ x of sampling distribution approach? How do two x distributions for sample size n = 50 and n = 100 compare?
Advantage first corporation has sales of 4,500,010; income tax of 390,754; the selling and general administrative expenses of 233,516; depreciation.
Given the following data for a two-way ANOVA, identify the sets of null and alternative hypotheses, then use the 0.05 level in testing each null hypothesis.
The following is the heart rate for 10 randomly selected patients on the unit. Find the mean, variance, and standard deviation of the data using the descriptive statistics option in the data analysis toolpak.
What is the probability two select public accounting? What is the probability five select public accounting? How many graduates would you expect to select public accounting?
Shown below is computer ouput for a regression analysis relating Y (demand in units) and X (unit price).
Determine how large a sample should be taken to be 90% confident that the sample mean is within 0.12 ounces of the true mean weight of our bakery's loaves.
A company uses exponential smoothing with α = to forecast demand for a product. For each month, the company keeps a record of the forecast demand (made at the end of the preceding month) and the actual demand. Some of the records have been lost; ..
Moore (1991, p. 19) reports the following contradictory evidence: "The advice columnist Ann Landers once asked her readers.
suppose that a flaw in a certain computer chip installed in computers was discovered that could result in a wrong
In each situation below, calculate the standardized score (or z-score) for the value x:- Mean μ = 0, standard deviation σ = 1, value x = 1.5.
Media Disk, Inc. duplicates over a million 3.5" floppy disks each year by copying masters to stacks of blank disks. The company buys its blank stock from two different suppliers, A and B.
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