dessywessy3948 dessywessy3948

19-12-2022
Mathematics

Answered

act scores for the 1,171,460 members of the 2004 high school graduating class who took the test closely followed the normal distribution with mean 20.9 and standard deviation 4.8. choose two students independently and at random from this group. A) what is the expected difference in their scores
b) what is the standard deviation in their scores
c) find the probability that the difference in the two students scores is greater than 6.

Answer :

Other Questions

The scores from a state standardized test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to find the

how to determine standard deviation of discrete random variables when given standard deviation and mena

education research consistently shows that students from wealthier families tend to have higher sat scores. the slope of the line that predicts sat scores from

let be the mean return for the gold industry and be the mean return for the oil industry. we wish to test if the average returns in the two industries are diffe

Use the data set provided in the main page of the experience for this application. 1. Complete the full hypothesis testing procedure to determine if students at

STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Given are data from students doing a labo

A researcher wants to examine whether the degree of authoritarianism (as measured by a survey from 0-60) is a predictor of the number of instances of gender dis

A fair six-sided die is repeatedly rolled until the total sum of all rolls exceeds 300 . Use the Central Limit Theorem to approximate the probability that at le

Is there a statistically significant difference between the average wait times at these two doctor's offices? Below are 36 randomly selected wait times in minut