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# Here are the weights (in grams) of 25 indicator housings ISBN: 9780321923271 41

## Solution for problem 7E Chapter 7.5

Probability and Statistical Inference | 9th Edition

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Problem 7E

PROBLEM 7E

Here are the weights (in grams) of 25 indicator housings used on gauges (see Exercise 6.2-8): (a) List the observations in order of magnitude.

(b) Give point estimates of π0.25, m, and π0.75.

(c) Find the following confidence intervals and, from Table II in Appendix B, state the associated confidence coefficient:

(i) (y3, y10), a confidence interval for π0.25.

(ii) (y9, y17), a confidence interval for the median m.

(iii) (y16, y23), a confidence interval for π0.75.

(d) Use x } tα/2(24)(s/√25 ) to find a confidence interval for μ, whose confidence coefficient corresponds to that of (c), part (ii). Compare these two confidence intervals of the middles.

References Exercise 6.2-8

The weights (in grams) of 25 indicator housings used on gauges are as follows: (a) Construct an ordered stem-and-leaf display, using integers as the stems and tenths as the leaves.

(b) Find the five-number summary of the data and draw a box plot.

(c) Are there any suspected outliers? Are there any outliers?

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Psychology 309 – 4/24/2016 Discrimination **If you can distinguish between situation A and situation B, you know what each situation serves and what to do in each scenario. Knowing “which” – choosing this instead of that Knowing “when” – to act at a proper time Knowing “whether” – to act differentially depending upon the probability of an event ^...

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##### ISBN: 9780321923271

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