Given that,
Confidence level = 95%
Since, population standard deviation is unknown we find t-critical value
t-crirical value at 0.05 level of significance with degrees of
freedom = 211 - 1= 210 is,
Critical value is,
NOTE: if we used standarf normal critical value
then at 0.05 level of significance,
Assume that we want to construct a confidence interval. Do one of the following, as appropriate:...
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...
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. Do one of the following, as appropriate: (a) find the critical value tu/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=254, = 31.7 hg, s= 6.3 hg. The confidence level is 90%. Select the correct choice below and, if necessary, fill in the answer box to complete your...
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,...
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 Za/2, or (c) state that neither the normal distribution nor the t distribution applies Here are summary statistics for randomly selected weights of newbom girls: n = 182. x = 29.8 hg, s= 68 hg. The confidence level is 90% Select the correct choice below and, if necessary, fill in the answer box...
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...
Assume that we want to construct a confidence interval De one of the following as appropriate() find the critical value) find the critical value of tale that other the normalno herbationes Here we summary statistics for randomly selected weights of newborn - 263,295,65 The confidence levels Select the correct choice below and, Wecessary, in the answer box to complete your choke on 612 (Round to two decimal places as needed) E. 7/2-0 (Round to two decimal places as needed) OC....
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 z/2, or (c) state that neither the normal distribution nor thet distribution applies. 30- The confidence level is 90%, o= 3695 thousand dollars, and the histogram of 60 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 0- 4000 8000 12000 1600 20000 Salary (thousands...
Assume that we want to construct a confidence interval. Do one of the? following, as? appropriate: (a) find the critical value 2t?/2?, ?(b) find the critical value 2z?/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=161?, x =29.7 ?hg, s=6.9 hg. The confidence level is 99?%.
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t Subscript alpha divided by 2, (b) find the critical value z Subscript alpha divided by 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: nequals181, x overbarequals33.8 hg, sequals6.2 hg. The confidence level is 99%.