Thank you for visiting Good readers and good spellers correctly read an average of tex 93 8 pm 2 9 tex Mean Standard Deviation whereas women scored an average. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
Final answer:
Approximately 90.5% of the good readers and good spellers group read at least 90 words. This is calculated using the normal distribution, with a provided mean of 93.8 and standard deviation of 2.9, and determining the cumulative distribution function for a score of 90.
Explanation:
To determine what percentage of participants correctly read at least 90 words in the good readers and good spellers group, we need to use the concept of the normal distribution. We were provided with a mean (M) of 93.8 and a standard deviation (SD) of 2.9 for the group. To find the percentage who read at least 90 words, we need to calculate the z-score for a score of 90 and then consult a standard normal distribution table or use a calculator that provides the cumulative distribution function for the normal distribution.
The z-score is calculated by the formula:
z = (X - M) / SD
Where:
X = the score of interest (90 in this case),
M = the mean of the distribution (93.8),
SD = the standard deviation of the distribution (2.9).
Plugging in the numbers:
z = (90 - 93.8) / 2.9 = -1.31
A z-score of -1.31 corresponds to the left tail of the normal distribution. By looking at standard normal distribution tables or using a calculator, we find that approximately 90.5% of the scores fall above a z-score of -1.31. This means that approximately 90.5% of participants in the good readers and good spellers group read at least 90 words.
Thank you for reading the article Good readers and good spellers correctly read an average of tex 93 8 pm 2 9 tex Mean Standard Deviation whereas women scored an average. We hope the information provided is useful and helps you understand this topic better. Feel free to explore more helpful content on our website!
- You are operating a recreational vessel less than 39 4 feet long on federally controlled waters Which of the following is a legal sound device
- Which step should a food worker complete to prevent cross contact when preparing and serving an allergen free meal A Clean and sanitize all surfaces
- For one month Siera calculated her hometown s average high temperature in degrees Fahrenheit She wants to convert that temperature from degrees Fahrenheit to degrees
Rewritten by : Jeany
