According to the CDC, only 20% of Americans get enough exercise each week. You conduct a survey of 200 people and find 45 who get enough exercise. a. What is the parameter? A. The proportion of people in the survey who get enough exercise. B. The proportion of all Americans who get enough exercise. C. All Americans. D. The people in the survey. E. All Americans who get enough exercise. b. What is the numerical value of the parameter? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is not known, enter “NA” without the quotes.) c. What is the statistic? A. All Americans who get enough exercise. B. The people in the survey. C. The proportion of people in the survey who get enough exercise. D. The proportion of all Americans who get enough exercise. E. The people in the survey who get enough exercise.d. What is the numerical value of the statistic? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is not known, enter “NA” without the quotes.)
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.
According to the CDC, only 20% of Americans get enough exercise each week. You conduct a survey of 200 people and find 45 who get enough exercise.
a. What is the parameter?
A. The proportion of people in the survey who get enough exercise.
B. The proportion of all Americans who get enough exercise.
C. All Americans.
D. The people in the survey.
E. All Americans who get enough exercise.
b. What is the numerical value of the parameter? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is not known, enter “NA” without the quotes.)
c. What is the statistic?
A. All Americans who get enough exercise.
B. The people in the survey.
C. The proportion of people in the survey who get enough exercise.
D. The proportion of all Americans who get enough exercise.
E. The people in the survey who get enough exercise.
d. What is the numerical value of the statistic? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is not known, enter “NA” without the quotes.)
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 5 images
