Mathematics, 28.08.2019 20:10, Lovebamagirl12
Let x be a random variable representing dividend yield of bank stocks. we may assume that x has a normal distribution with σ = 3.0%. a random sample of 10 bank stocks gave the following yields (in percents).5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1the sample mean is x = 5.38%. suppose that for the entire stock market, the mean dividend yield is μ = 4.7%. do these data indicate that the dividend yield of all bank stocks is higher than 4.7%? use α = 0.01.(a) what is the level of significance? state the null and alternate hypotheses. will you use a left-tailed, right-tailed, or two-tailed test? h0: μ > 4.7%; h1: μ = 4.7%; right-tailed h0: μ = 4.7%; h1: μ < 4.7%; left-tailed h0: μ = 4.7%; h1: μ ≠ 4.7%; two-tailed h0: μ = 4.7%; h1: μ > 4.7%; right-tailed(b) what sampling distribution will you use? explain the rationale for your choice of sampling distribution. the standard normal, since we assume that x has a normal distribution with unknown σ. the standard normal, since we assume that x has a normal distribution with known σ. the student's t, since n is large with unknown σ. the student's t, since we assume that x has a normal distribution with known σ.what is the value of the sample test statistic? (round your answer to two decimal places.)
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Mathematics, 21.06.2019 15:00, deaishaajennings123
Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.
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Mathematics, 21.06.2019 16:30, nockturnal1993
Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets, x, and the number of student tickets, y. find the solution and explain what it means. i'll you if you me
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Let x be a random variable representing dividend yield of bank stocks. we may assume that x has a no...
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