A college professor randomly selected one of her classes and timed, in minutes how long it took each of her 25 students to complete the exam. The confidence interval was used in Statcrunch in the picture A. What is the value of the point estimate for the confidence interval. Refer to the picture B. According to the output, what is the confidence interval? Round to two decimal place C. Identify the following statements true or false 1. 95% confidence interval means that 95% of the sample mean values will be within our interval. 2. Based on our confidence interval, it is believable that the parameter is 47 minutes 3. If we obtain a different sample of the same size our confidence interval will be different

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A college professor randomly selected one of her classes and timed, in minutes how long it took each of her 25 students to complete the exam. The confidence interval was used in Statcrunch in the picture A. What is the value of the point estimate for the confidence interval. Refer to the picture B. According to the output, what is the confidence interval? Round to two decimal place C. Identify the following statements true or false 1. 95% confidence interval means that 95% of the sample mean values will be within our interval. 2. Based on our confidence interval, it is believable that the parameter is 47 minutes 3. If we obtain a different sample of the same size our confidence interval will be different
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One sample T summary confidence interval:
: Mean of population
95% confidence interval results
Mean Sample Mean Std. Ern. DE L Limit
U. Limit
51 1.807392214 47,123529 54.876471
Transcribed Image Text:Options One sample T summary confidence interval: : Mean of population 95% confidence interval results Mean Sample Mean Std. Ern. DE L Limit U. Limit 51 1.807392214 47,123529 54.876471
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