In reference to confidence interval, the true statement is:
Option C is correct.
In reference to a Confidence Interval, which is true None of the answers are correct The smaller the level of alpha, t...
QUESTION 3 All things being equal, which is correct? As the confidence level increases, the margin of error gets larger. As the sample size increases, the confidence interval gets wider. As the standard deviation increases, the margin of error gets smaller. As the sample mean increases, the margin of error gets larger. Which of the following is correct? As the sample size increases, the confidence level decreases. As the confidence level increases, the width of the confidence interval decreases. As...
Find the confidence level and alpha for a 99% confidence interval
Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is test to a one-tailed test True False Question 5 3 pts In reference to a Confidence Interval, which are true All the answers are correct The larger the level of alpha, the smaller the Bound of Error (BOE) The larger the level of alpha, the larger the Confidence Coefficient The larger the level of alpha, the larger the standard deviation Question 8 3 pts...
17. If the confidence level for a confidence interval is 98%. then the error rate α is ______. a. 98% b. 2% c. 95% d. 5% 18. Suppose the sample mean is μ and the confidence interval for population mean is (μ-E, μ+E). E will be getting smaller if: (18.a) the sample size is getting ___________; a. smaller b. larger (18.b) the standard deviation of the data in the sample is __________; a. smaller b. larger (18.c) the allowed error...
What is the t-value for a 90% confidence interval for the mean if the sample size is 24? a. 1.984 b. 1.714 c. 2.069 d. 1.96 e. 2.306 In general, when choosing the sample size for estimating a mean, which of the following will result in a smaller margin of error (E)? a. a larger confidence level b. a smaller sample size c. a dozen glazed donuts d. a larger sample size e. a more expensive calculator
Which of the following statements is correct? a. a confidence level expresses the degree of certainty that an interval will include value of the population parameter. b. a confidence level expresses the degree of certainty that a point estimate will include the actual value of the population parameter. c. a confidence level expresses the degree of certainty that an interval will include the actual value of the sample statistic. d. a confidence level expresses the degree of certainty that a...
What is the relationship between the size of a confidence interval
and its level of confidence (ex, 95% or 99%) .
"The larger the interval, the more useful it is" "The smaller the interval, the more confident you are" "The larger the interval, the less confident you are'. "The larger the interval, the more confident you are
Critical values for quick reference during this activity. Confidence level Critical value 0.90 = 1.645 0.95 = 1.960 0.99 2.576 Jump to level 1 In a poll of 1000 randomly selected voters in a local election, 632 voters were in favor of fire department bond measures What is the 95% confidence interval [Ex: 0.125 Ex 0.129 [smaller value, larger value)
Question 8 3 pts The a two-tailed hypothesis test Is related to a confidence interval at the same level of alpha. All of the answers are true. Is expressed in a probability framework with a chance of being wrong in our conclusion. Has an alternative hypothesis that uses Not Equal in the expression For this problem you will need a t-table. What is the t-value needed for the critical value for a one-tailed upper hypothesis test with a sample size...
The larger the confidence level used in constructing a confidence interval estimate of the population mean, the wider the confidence interval. True False