A survey was conducted that asked 972 people how many books they had read in the past year. Results indicated that x=14.1 books and s=16.6 books. Construct a 95% confidence interval for the mean number of books people read. Interpret the interval. Construct a 95% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) A. If repeated samples are taken, 95% { } of them will have a sample mean between nothing and nothing. B. There is a 95% probability that the true mean number of books read is between { }nothing and { }nothing. C. There is 95% confidence that the population mean number of books read is between { }nothing and { }nothing.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
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