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Statistics / Probability and Statistical Inference 9 / Chapter 7.1 / Problem 7.1-3

Probability and Statistical Inference | 9th Edition | ISBN: 9780321923271 | Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman

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To determine the effect of 100% nitrate on the growth of pea plants, several specimens

Chapter 7, Problem 7.1-3

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QUESTION:

To determine the effect of 100% nitrate on the growth of pea plants, several specimens were planted and then watered with 100% nitrate every day. At the end of two weeks, the plants were measured. Here are data on seven of them: 17.5 14.5 15.2 14.0 17.3 18.0 13.8 Assume that these data are a random sample from a normal distribution N(, 2). (a) Find the value of a point estimate of . (b) Find the value of a point estimate of . (c) Give the endpoints for a 90% confidence interval for .

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QUESTION:

To determine the effect of 100% nitrate on the growth of pea plants, several specimens were planted and then watered with 100% nitrate every day. At the end of two weeks, the plants were measured. Here are data on seven of them: 17.5 14.5 15.2 14.0 17.3 18.0 13.8 Assume that these data are a random sample from a normal distribution N(, 2). (a) Find the value of a point estimate of . (b) Find the value of a point estimate of . (c) Give the endpoints for a 90% confidence interval for .

ANSWER:

Step 1 of 5

Using the data we have to determine the following:

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