Suppose you compute a confidence interval with a sample size of 25. What will happen to the confidence interval if the sample size increases to 50?
a. nothing
b. get larger
c. get smaller
Suppose you compute a confidence interval with a sample size of 25. What will happen to...
QUESTION 1 Suppose we have a sample size of 100 and calculate a confidence interval. What will happen to that interval if we then get a sample size of 200 (all else equal). It will become narrower It will become wider. It will remain the same, because the mean is not changing It will get closer to 1.96.
QUESTION 1 Suppose we have a sample size of 100 and calculate a confidence interval. What will happen to that interval if...
Suppose you compute a 97% confidence interval. What will happen to the confidence interval if you decrease the confidence level to 96%? The confidence interval will widen. The confidence interval will narrow. The width of the confidence interval will stay the same.
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
You collect a random sample of size n from a population and calculate a 98% confidence interval. Which of the following strategies produces a new confidence interval with a decreased margin of error? A.) Use a 99% Confidence level B.)Use a 95% confidence level C.)Decrease Sample Size D.)Use the same confidence level but compute the interval n time. Approximately 2% of these intervals will be larger. E.)Nothing can guarantee that you will obtain a larger margin of error. You can...
Answer and explain. If all other quantities remain the same, what will happen to the width of a confidence interval if there is an increase in the:confidence level;sample size; andstandard deviation
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
a) Suppose you collect a SRS of size n from a population and from the data collected you computed a 95% confidence interval for the mean of the population. Which of the following would produce a new confidence interval with larger width (larger margin of error) based on these same data? A. Use a larger confidence level. B. Use a smaller confidence level. C. Nothing can guarantee absolutely that you will get a larger interval. One can only say the...
Describe how the width of a 95% confidence interval for a mean changes as the sample size (n) increases, assuming the standard deviation remains the same. As the sample size increases, the width of a 95% confidence interval for a mean gets , assuming the standard deviation remains the same. Choices are larger, gets smaller, gets larger, stays the same
suppose you are going to create a 90% confidence interval for mean. if the sample size is 25, what would be the critical t values that you would need to use? sketch a picture showing t values
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...