a. The t-values are the proportions of the areas in two tails of the t-curve are also called __________. critical values critical region point estimate confidence interval b. The expression σ/√n (sigma over square root of n) is referred to as: standard deviation ofthe raw score distribution mean of the sampling distribution of proportions mean of the sampling distribution standard error of the sampling distribution of means c. Assuming that the samples come from normal distributions, find the margin of error E given the following: n=27, x(mean) = 92.8, s=2.6, 99% confidence 1.19 1.18 1.39 1.38 d. A sample of 60 Grade 11 student's ages was obtained to estimate the mean age of all Grade 11. The mean X(bar) =17.5 years and the population variance is 16. What is the point estimate for μ? 16 17 17.5 none of these e. A sample of 60 Grade 11 student's ages was obtained to estimate the mean age of all Grade 11. The mean X(bar) =17.5 years and the population variance is 16. What is the 99% confidence interval for μ? 12.17 - 22.83 12 - 23 12.18 - 22.82 none of thes
a. The t-values are the proportions of the areas in two tails of the t-curve are also called __________.
critical values
critical region
point estimate
confidence interval
b. The expression σ/√n (sigma over square root of n) is referred to as:
standard deviation ofthe raw score distribution
mean of the sampling distribution
standard error of the sampling distribution of means
c. Assuming that the samples come from
1.19
1.18
1.39
1.38
d. A sample of 60 Grade 11 student's ages was obtained to estimate the mean age of all Grade 11. The mean X(bar) =17.5 years and the population variance is 16. What is the point estimate for μ?
16
17
17.5
none of these
e. A sample of 60 Grade 11 student's ages was obtained to estimate the mean age of all Grade 11. The mean X(bar) =17.5 years and the population variance is 16. What is the 99% confidence interval for μ?
12.17 - 22.83
12 - 23
12.18 - 22.82
none of these
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