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Study Resources (Statistics)

: In this chapter, confidence intervals are introduced. There were 3 different methods of constructing a confidence interval, using a z-value, a t-value and with a proportion. There were also 2 methods of determining how large a sample size would be required to construct a confidence interval with the given.
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Independent random samples taken on two university campuses revealed the following information concerning the average amount of money spent on textbooks during the fall semester. State the null and alternative hypotheses to determine if, on the average, students at University A spent more on textbooks then the students at University.
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In this economically challenging time, yours truly, CEO of the Outrageous Products Enterprise, would like to make extra money to support his frequent filet-mignon-anddouble-lobster-tail dinner habit. A promising enterprise is to mass-produce tourmaline wedding rings for brides. Based on my diligent research, I have found out that women's ring size.
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In your environment (business or personal), please describe a hypothesis test related to a decision. What would be your data? What would be your null hypothesis? What would be your alternate hypothesis? What would be your Type 1 and Type 2 errors relative to your decision? Suppose you have a.
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Increase decrease, Stays the same, or not enough information: a. as the absolute value of the difference between P-null and P-real increases, what happens to power? as N decreases, what happens to power? as alpha increases what happens to the critical value? as alpha increases what happen to significance? as.
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In X-ray fluorescence spectroscopy, film self-absorption and attenuation length can affect the detected signal response significantly. An experiment is performed and data on the detected signal of iodine X and the incident angle to the normal Y. It is known that there is a linear relationship between X and Y..
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