Question
The average amount of time, in minutes, for students to complete standardized test is normally distributed. A data analyst takes a sample of n=42 student
The average amount of time, in minutes, for students to complete standardized test is normally distributed. A data analyst takes a sample of n=42 student times and finds a 95% confidence interval to be [103.8,138.2]
What is the population parameter? (multiple choices and they choices are highlighted in BOLD)
The average amount of time taken on the test by all students
The average amount of time taken on the test by the sample of 42 students
The sample size n=42
What is the interpretation of the confidence interval? (multiple choice and they choices are highlighted in BOLD)
5% confidence exists that the average time taken on the test is between 103.8 and 138.2
95% confidence exists that the average time taken on the test is between 103.8 and 138.2
95% of the sample data falls between 103.8 and 138.2
95% of the students will take between 103.8 and 138.2 minutes to complete the test
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