Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below: Number of Pages (x ) Cost(y ) 571 77.1 675 90.5 957 115.7 530 68 993 114.3 473 55.3 877 94.7 240 47 686 88.6 A student calculates a linear model using technology (Statistics Calculator or Computer) ˆy = x + . (Please show your answers to two decimal places) Use the model to estimate the cost when number of pages is 513. Cost = $ (Use the linear model with yor rounded coefficients and then round your answer to 2 decimal places.)
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.
Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below:
| Number of Pages (x |
|---|
| ) | Cost(y |
|---|
| ) | |
|---|---|
| 571 | 77.1 |
| 675 | 90.5 |
| 957 | 115.7 |
| 530 | 68 |
| 993 | 114.3 |
| 473 | 55.3 |
| 877 | 94.7 |
| 240 | 47 |
| 686 | 88.6 |
A student calculates a linear model using technology (Statistics Calculator or Computer)
ˆy = x + . (Please show your answers to two decimal places)
Use the model to estimate the cost when number of pages is 513.
Cost = $ (Use the linear model with yor rounded coefficients and then round your answer to 2 decimal places.)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
