Solution:
=> option A. t = 2.61
Explanation : n = 157, 99% Confidence interval
df = n-1 = 156
t(156,0.01) = +/- 2.61
Resume that we want to construct a confidence interval. Do one of the following an approprio...
7.2.8-T Question Help Assume that we want to construct a confidence interval. Do one of the following, as approprate: (a) find the critical value t/2P) find the critical value z/2-r(c) state that neither the nomal distribut- nor the t distribution applies Here are summary statistics for randomly selected weights of newbom girls: n 249, x 30.4 hg.s6.8 hg. The confidence level is 99% Select the correct choice below and, if necessary, fill in the answer box to complete your choice....
Assume that we want to construct a confidence interval Do one of the following, as appropriate: (a) find the critical value 1/2. (b) find the critical value 2/2 or (c) state that neither the normal distribution nor the distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n = 234, X = 319 hg, s=66 hg. The confidence level is 90% Select the correct choice below and, if necessary, fill in the answer box to complete...
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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2. (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution applies Here are summary statistics for randomly selected weights of newborn gits na 211, x-29 6 hg s-7 7 hg The confidence level is 95% Select the correct choice below and, if necessary, fill in the answer box to complete...
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta /2, (b) find the critical value Za/2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n= 182, x = 32.8 hg, s = 6.2 hg. The confidence level is 90%. Select the correct choice below and, if necessary, fill in the answer...
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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2, (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n=239, x = 32.4 hg, s = 6.3 hg. The confidence level is 99%. Select the correct choice below and, if necessary, fill in the answer box to...
Assume that we want to construct a confidence interval. Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution applies Here are summary statistics for randomly selected weights of newborn girls: n hg. The confidence level is 95%. 269, x 32.9 hg, s 6.2 Select the correct choice below and,...
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