You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 13 randomly selected physical therapy patients. 11,8,12,9,7,12,10,9,8,4,16,9,7, Assume a normal distribution and round your answers to two decimal places. A. The sampling distribution follows a distribution. B. With 95% confidence, the mean number of visits per physical therapy patient is between and visits. C. If many groups of 13 randomly selected physical therapy patients are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean the number of visits per patient and about percent will not contain the true population mean a number of visits per patient.
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.
You are interested in finding a 95% confidence interval for the
11,8,12,9,7,12,10,9,8,4,16,9,7,
Assume a
A. The sampling distribution follows a distribution.
B. With 95% confidence, the mean number of visits per physical therapy patient is
between and visits.
C. If many groups of 13 randomly selected physical therapy patients are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean the number of visits per patient and about percent will not contain the true population mean a number of visits per patient.
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