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Use the 68--95--99.7 rule. You take an SRS of size 196 from a population with mean 320 and standard deviation 21.
According to the central limit theorem, what is the approximate sampling distribution of the sample mean? Use the 95 part of the 68-95-99.7 rule to describe the variability of this sample mean.
suppose you record data on these five variables for every student in your class place of residence dorm apartment with
Assume the population variances of the two groups are equal and verify that the estimate of this common variance is 11.25.
Choose a research article from your field.Write the five hypotheses that this study is testing.Write both the null and alternative hypotheses for each one.
Identify the independent variables as quantitative or qualitative.- Write the first-order model for E(y).- Write the complete second-order model for E(y).
(a) Combining the data for both lathes in Exercise 112, construct a histogram. (b) How would you describe the shape of the histogram?
regression anaylsis was applied between demand for a product y and the price of the product x and the following
Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year.
The price of XYZ Corporation stock is normally distributed all through the year with mean of $42.00 per share and a standard deviation of $2.25 per share. Suppose that the stock is traded 240 days out of the year.
In a random survey of 226 self-employed individuals, 20 reported having had their tax returns audited by the IRS in the past year. Estimate the proportion of self- employed individuals nationwide who've been audited by the IRS in the past year. a)..
Comment briefly on the profitability and volatility of Gerald's business - Interpret the meaning of your interval, in simple terms understandable by the Mayor.
the following information is available about the distribution of the price of single family homes in an area median
Formulate an appropriate hypothesis testing procedure to answer this question. Test these hypotheses using the data and draw conclusions, using α = 0.01
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