Questions from Statistics Principles


Q: Test for equality of means based on the data in Exercise 14

Test for equality of means based on the data in Exercise 14.2. Take  = .05. Data from Exercise 14.2: Subjects must press a button when they h ear a signal. The three treatments are...

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Q: Three bread recipes are to be compared with respect to density of

Three bread recipes are to be compared with respect to density of the loaf. Five loaves will be baked using each recipe. (a) If one loaf is made and baked at a time, how would you select the order? (b...

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Q: Test for equality of means based on the travel expense data in

Test for equality of means based on the travel expense data in Exercise 14.6. Take  = .05. Data from Exercise 14.6: Referring to the lying experiment. The subjects were also able t...

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Q: Refer to the data on reading levels in Exercise 14.7

Refer to the data on reading levels in Exercise 14.7. Test for equality of means. Take a = .05. Data from Exercise 14.7: Reading levels vary between different magazines. To avoid difficulties caused...

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Q: Physical education researchers interested in the development of the overarm throw measured

Physical education researchers interested in the development of the overarm throw measured the horizontal velocity of a thrown ball at the time of release. The results for first-grade children (in fee...

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Q: Taking a = .OS and n - k = 26,

Taking a = .OS and n - k = 26, determine the appropriate percentile of the t distribution when calculating the multiple-t confidence intervals with (a) m = 3 and (b)m = 5.

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Q: Construct the 90% multiple-t confidence intervals using the sound

Construct the 90% multiple-t confidence intervals using the sound distortion data in Example 1.

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Q: As suggested by the photo in the beginning of this chapter,

As suggested by the photo in the beginning of this chapter, consumers can rate new HDTVs. Many Web sites use a five point scale. Although the individual responses are not normal, the central limit res...

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Q: Subjects must press a button when they h ear a signal.

Subjects must press a button when they h ear a signal. The three treatments are three different intensities of the signal. The time elapsed between presentation of the signal and when the button is pu...

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Q: A study was conducted to examine the degree that the length of

A study was conducted to examine the degree that the length of gestation influences school achievement for children born in the normal range of 3 7 to 41 weeks gestation. Academic achievement was meas...

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