In a survey of 3115 adults aged 57 through 85 years, it was found that 86.1% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3115 subjects used at least one prescription medication? (Round to the nearest integer as needed.)
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.
![### Survey of Prescription Medication Usage Among Adults
**Survey Population:**
- Total Adults Surveyed: 3,115
- Age Range: 57 to 85 years
**Survey Findings:**
- Percentage of Adults Using At Least One Prescription Medication: 86.1%
**Questions and Exercises:**
#### Question a:
**How many of the 3,115 subjects used at least one prescription medication?**
*(Round to the nearest integer as needed.)*
- **Calculation:**
To find the number of subjects who used at least one prescription medication, multiply the total surveyed population by the percentage who used at least one medication.
\[
3,115 \times \frac{86.1}{100} = \text{(number of subjects using at least one medication)}
\]
- **Result:**
Approximately 2,682 subjects used at least one prescription medication. (Rounding to the nearest integer)
*(No graphs or diagrams are provided in this image.)*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F15c363dd-bee0-4851-8a57-e357b273329c%2F1b00cab2-6f4a-4d60-8ac9-f0dc075321d9%2F5wpoesf_processed.jpeg&w=3840&q=75)
Step by step
Solved in 2 steps with 2 images
