Question

A sample of n = 6 individuals is selected from a population with µ = 25. After a treatment is administered to the individuals, the sample mean is found to be M = 27.

A. If the sample variance is s = 4, then conduct a hypothesis test to evaluate the significance of the treatment effect and calculate r² to measure the size of the treatment effect. Use a two-tailed test with α = .05.

B. If the sample variance is s = 8, then conduct a hypothesis test to evaluate the significance of the treatment effect and calculate r² to measure the size of the treatment effect. Use a two-tailed test with α = .05.

Answer 1

PA ny companion vasuaALe 사 2828. cal-27-25 2 1.732 2.828/6 11545 七 significance hu sige ettteahment effect. Ni-Ma 2 2 2 828 obserue thet sine af treatment offect in fart
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Answer 2

The chief differences between RP, as defined above, and a variety of American English, such as Inland Northern (the speech form of western New England and its derivatives, often popularly referred to as General American), are in the pronunciation of certain individual vowels and diphthongs. Inland Northern American vowels sometimes have semiconsonantal final glides (i.e., sounds resembling initial w, for example, or initial y). Aside from the final glides, that American accent shows four divergences from British English: (1) the words cod, box, dock, hot, and not are pronounced with a short (or half-long) low front sound as in British bard shortened (the terms front, back, low, and high refer to the position of the tongue); (2) words such as bud, but, cut, and rung are pronounced with a central vowel as in the unstressed final syllable of sofa; (3) before the fricative sounds s, f, and θ (the last of these is the th sound in thin) the long low back vowel a, as in British bath, is pronounced as a short front vowel a, as in British bad; (4) high back vowels following the alveolar sounds t and d and the nasal sound n in words such as tulips, dew, and news are pronounced without a glide as in British English; indeed, the words sound like the British two lips, do, and nooze in snooze. (In several American accents, however, these glides do occur.)

Answer 3

The 24 consonant sounds comprise six stops (plosives): p, b, t, d, k, g; the fricatives f, v, θ (as in thin), ð [eth] (as in then), s, z, ∫ [esh] (as in ship), Ʒ (as in pleasure), and h; two affricatives: t∫ (as in church) and dƷ (as the j in jam); the nasals m, n, ŋ (the sound that occurs at the end of words such as young); the lateral l; the postalveolar or retroflex r; and the semivowels j (often spelled y) and w. These remain fairly stable, but Inland Northern American differs from RP in two respects: (1) r following vowels is preserved in words such as door, flower, and harmony, whereas it is lost in RP; (2) t between vowels is voiced, so that metal and matter sound very much like British medal and madder, although the pronunciation of this t is softer and less aspirated, or breathy, than the d of British English.