Question

In: Statistics and Probability

Confidence Level 95% SUMMARY STATISTICS Group 1 Group 2 n 50 50 Number of Successes 23...

Confidence Level 95%
SUMMARY STATISTICS
Group 1 Group 2
n 50 50
Number of Successes 23 11
or Sample Proportion
RESULTS*
Group 1 Group 2
Sample Proportions
Risk Difference (RD)
SE (RD)
Z
Margin of Error
CI for Risk Difference
Lower Limit
Upper Limit
Relative Risk (RR)
CI for Relative Risk
Lower Limit
Upper Limit
Odds Ratio (OR)
CI for Odds Ratio
Lower Limit
Upper Limit

Solutions

Expert Solution


Confidence Level 95%
SUMMARY STATISTICS
Group 1 Group 2
n 50 50
Number of Successes 23 11
or Sample Proportion 0.46 0.22
RESULTS*
Group 1 Group 2
Sample Proportions 0.46 0.22
Risk Difference (RD) 0.24
SE (RD) 0.0947
Z 2.5343
Margin of Error 0.1856
CI for Risk Difference
Lower Limit 0.0544
Upper Limit 0.4256
Relative Risk (RR) 2.0909
CI for Relative Risk
Lower Limit 0.1354
Upper Limit 1.3397
Odds Ratio (OR) 3.0202
CI for Odds Ratio
Lower Limit 1.2653
Upper Limit 7.2093

Related Solutions

Var1 Var2 Confidence Level 95% 113 141 125 137 RESULTS 134 126 Group 1 Group 2...
Var1 Var2 Confidence Level 95% 113 141 125 137 RESULTS 134 126 Group 1 Group 2 120 121 n 132 116 Mean 120 154 Std Dev 121 160 SE 119 155 t Sp Margin of Error Point Estimate Lower Limit Upper Limit
1. If you decrease the level of confidence from 99% to 95%, the width of confidence...
1. If you decrease the level of confidence from 99% to 95%, the width of confidence interval will A. increase by 4% B. decrease by 4% C. decrease by 8% D. None of the above 2. If you wish to decrease the margin of error, you may do which one of the following: A. Increase the sample size. B. Reduce the population size. C. Decrease the level of confidence. D. Both b and c  E. Both a and c 3. In...
If n=30, ¯ x (x-bar)=43, and s=15, construct a confidence interval at a 95% confidence level....
If n=30, ¯ x (x-bar)=43, and s=15, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. < μ < Submit Question
If n=15, ¯ x (x-bar)=36, and s=7, construct a confidence interval at a 95% confidence level....
If n=15, ¯ x (x-bar)=36, and s=7, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. ()< μ<()
1. If n=28, x¯ (x-bar)=50, and s=6, find the margin of error at a 95% confidence...
1. If n=28, x¯ (x-bar)=50, and s=6, find the margin of error at a 95% confidence level (use at least two decimal places) 2. What is the margin of error for a poll with a sample size of 2400 people? Round your answer to the nearest hundredth of a percent. % 3. If you want a poll to have a margin of error of 3.24%, how large will your sample have to be? Round your answer to the nearest whole...
A random sample of 140 observations results in 119 successes. a. Construct the a 95% confidence...
A random sample of 140 observations results in 119 successes. a. Construct the a 95% confidence interval for the population proportion of successes. (Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.)   b. Construct the a 95% confidence interval for the population proportion of failures. (Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.)
2. What is the sample size, n, for a 95% confidence interval on the mean, if...
2. What is the sample size, n, for a 95% confidence interval on the mean, if we know that the process’ standard error is 3.2 units, and we want to allow at most 1.0 units for our error? 3. Let’s say that you just randomly pulled 32 widgets from your production line and you determined that you need a sample size of 46 widgets, However, you get delayed in being able to pull another bunch of widgets from the line...
At a confidence level of 95% a confidence interval for a population proportion is determined to...
At a confidence level of 95% a confidence interval for a population proportion is determined to be 0.65 to 0.75. If the sample size had been larger and the estimate of the population proportion the same, this 95% confidence interval estimate as compared to the first interval estimate would be A. the same B. narrower C. wider
If n=11, ¯xx¯(x-bar)=43, and s=4, construct a confidence interval at a 95% confidence level. Assume the...
If n=11, ¯xx¯(x-bar)=43, and s=4, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.
With the statistics n=27, x¯¯¯=75.0, and s2=144.0, find to construct a 95% confidence interval estimate of...
With the statistics n=27, x¯¯¯=75.0, and s2=144.0, find to construct a 95% confidence interval estimate of σ ______ σ ________ With the statistics n=27n=27, x¯¯¯=75.0x¯=75.0, and s2=144.0s2=144.0, find to construct a 95% confidence interval estimate of σ2. _____ <σ2<_____
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT