why do we have two tables for confidence interval s, the z- table and the t-table
why do we have two tables for confidence interval s, the z- table and the t-table
Homework Answers
For both the table normality assumption is must
Now when sample size is less than 30, we will use t table and when it is greater than 30, we use z table
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why do we have two tables for confidence interval s, the z-
table and the t-table
95% confidence interval (PART A and B) Find the 95% z-interval or t-interval for the indicated...
95%
confidence interval (PART A and B)
Find the 95% z-interval or t-interval for the indicated parameter. (a) μ x 151, s-36, n-32 (b) p p=0.7, n=50 (a) The 95% confidence interval for μ is to (Round to two decimal places as needed.)
7.2.8-T Question Help Assume that we want to construct a confidence interval. Do one of the...
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....
95% z-interval or t-interval Part a and b Find the 95% z-interval or t-interval for the...
95%
z-interval or t-interval
Part a and b
Find the 95% z-interval or t-interval for the indicated parameter. (a) u x 174, s 37, n 38 (b)p p 0.7, n 73 (a) The 95% confidence interval for is L to l (Round to two decimal places as needed.)
do parts a) & b) Find the 95% z-interval or t-interval for the indicated parameter. (a)u...
do parts a) & b)
Find the 95% z-interval or t-interval for the indicated parameter. (a)u X- 138, s 35, n 34 (b)p p 0.3, n-62 (a) The 95% confidence interval for μ is to (Round to two decimal places as needed.) L1
Resume that we want to construct a confidence interval. Do one of the following an approprio...
Resume that we want to construct a confidence interval. Do one of the following an approprio (a) find the critical value /?.6) find the critical value a/?or (c) state that other the nomal distribution nor the distribution applies Here are summary statistics for randomly selected weights of newcomin= 157, =282 hg, s=7.1 hg The confidence level is 99% Select the conted choice below and, i necessary in the box to complete your choice OA Round to two places ded) OB...
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 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:...
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%.
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 t Subscript alpha divided by 2tα/2, (b) find the critical value z Subscript alpha divided by 2zα/2, or (c) state that neither the normal distribution nor the t distribution applies.The confidence level is 90%, sigmaσ is not known, and the histogram of 57 player salaries (in thousands of dollars) of football players on a team is as shown.
Determine the t critical value for a two-sided confidence interval in each of the following situations....
Determine the t critical value for a two-sided confidence interval in each of the following situations. (Round your answers to three decimal places.) (a) Confidence level = 95%, df = 10 (b) Confidence level = 95%, df = 15 (c) Confidence level = 99%, df = 15 (d) Confidence level = 99%, n = 5 (e) Confidence level = 98%, df = 22 (f) Confidence level = 99%, n = 38 You may need to use the appropriate table in...
Assume that we want to construct a confidence interval. Assume that we want to construct a...
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,...
95%
confidence interval (PART A and B)
Find the 95% z-interval or t-interval for the indicated parameter. (a) μ x 151, s-36, n-32 (b) p p=0.7, n=50 (a) The 95% confidence interval for μ is to (Round to two decimal places as needed.)
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....
95%
z-interval or t-interval
Part a and b
Find the 95% z-interval or t-interval for the indicated parameter. (a) u x 174, s 37, n 38 (b)p p 0.7, n 73 (a) The 95% confidence interval for is L to l (Round to two decimal places as needed.)
do parts a) & b)
Find the 95% z-interval or t-interval for the indicated parameter. (a)u X- 138, s 35, n 34 (b)p p 0.3, n-62 (a) The 95% confidence interval for μ is to (Round to two decimal places as needed.) L1
Resume that we want to construct a confidence interval. Do one of the following an approprio (a) find the critical value /?.6) find the critical value a/?or (c) state that other the nomal distribution nor the distribution applies Here are summary statistics for randomly selected weights of newcomin= 157, =282 hg, s=7.1 hg The confidence level is 99% Select the conted choice below and, i necessary in the box to complete your choice OA Round to two places ded) OB...
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...
Determine the t critical value for a two-sided confidence interval in each of the following situations. (Round your answers to three decimal places.) (a) Confidence level = 95%, df = 10 (b) Confidence level = 95%, df = 15 (c) Confidence level = 99%, df = 15 (d) Confidence level = 99%, n = 5 (e) Confidence level = 98%, df = 22 (f) Confidence level = 99%, n = 38 You may need to use the appropriate table in...
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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