[3] A new school initiative was to investigate what could be done to enhance the middle 40% of students at a school cons...
[3] A new school initiative was to investigate what could be done to enhance the middle 40% of students at a school considered at risk. If the average score of the MCA exam was 77 with standard deviation of 8.3, what is the minimum and maximum score to be considered in the middle 40%
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[3] A new school initiative was to investigate what could be done to enhance the middle 40% of students at a school cons...
Counselors at an exclusive private college look carefully at the applications from high school students seeking...
Counselors at an exclusive private college look carefully at the applications from high school students seeking admission to the college. One of their criteria is that these students must score in the top 3.75% of all students who took the required entrance exam. The exam is constructed such that the scores are normally distributed with an average of 900 and a standard deviation of 135. The minimum exam score necessary for applicants to be further considered for admission is:
An exam is given to all senior high school students, the standard deviation for all the...
An exam is given to all senior high school students, the standard deviation for all the students is given as 30. The average score for 40 students on the exam is 250. Assume the means to be measured to any degree of accuracy (assume that scores are Gaussian distributed). (a) Find the 95% confidence interval (CI) for the average score of all students taking the exam. (b) Find the prediction interval for the score of the next student chosen at...
QUESTION 1 An exam is given to all senior high school students, the standard deviation for...
QUESTION 1 An exam is given to all senior high school students, the standard deviation for all the students is given as 30. The average score for 40 students on the exam is 250. Assume the mea measured to any degree of accuracy (assume that scores are Gaussian distributed). (a) Find the 95% confidence interval (CI) for the average score of all students taking the exam. (b) Find the prediction interval for the score of the next student chosen at...
Using NORM.DIST() or NORM.INV() function in Excel: Cal Tech Engineering School only considers students in the...
Using NORM.DIST() or NORM.INV() function in Excel: Cal Tech Engineering School only considers students in the top 12.5% based on their quantitative GRE scores. The national average GRE score for the quantitative portion for all students taking the exam between July 1, 2001 and June 30, 2004 is 597 with a standard deviation of 148. Assume that GRE scores have a normal distribution. What score would a student need to be considered for Cal Tech Engineering School?
Problem (ii): Cal Tech Engineering School only considers students in the top 12.5% based on their...
Problem (ii): Cal Tech Engineering School only considers students in the top 12.5% based on their quantitative GRE scores. The national average GRE score for the quantitative portion for all students taking the exam between July 1, 2001 and June 30, 2004 is 597 with a standard deviation of 148. Assume that GRE scores have a normal distribution. What score would a student need to be considered for Cal Tech Engineering School? (1 point) Problem (iii): A community college has...
4. To be considered as a menu item for Gloria's new restaurant an item must have...
4. To be considered as a menu item for Gloria's new restaurant an item must have scored in the top 15% by the food critics in the area. The average item's score is 7 with a standard deviation of 2. Assuming that the variable is normally distributed, find the lowest score possible for a menu item to still be considered. 5. The average number of absences for a high school senior is 5 days per school year with a standard...
1. Ms. Jackson has three sections of the course "Introduction to Statistics.” The midterm results reveal...
1. Ms. Jackson has three sections of the course "Introduction to Statistics.” The midterm results reveal that class A has an average of 82, class B has an average of 88, and class C has an average of 92. If there were 20 students in class A, 25 students in class B, and 27 students in class C, what is the combined mean (the average for all the three classes)? Show your work. 2. In your Biology class, your final...
For a certain law school, the entering students have an average LSAT score of about 700...
For a certain law school, the entering students have an average LSAT score of about 700 with a standard deviation of about 40. The smoothed density histogram of the LSAT scores appears to follow a normal distribution. Sketch a smoothed density histogram (a bell-shaped curve) of the distributions for the LSAT scores. (For this problem, draw this on your own paper. You will not need to submit this graph.) Because this distribution is approximately normal, the mean is equal to...
13. If we have a normal distribution with a mean of 75 and a standard deviation of 3. a. what z-score(s) would cut off the middle 40% of the distribution? b. what raw score(s) would cut off the l...
13. If we have a normal distribution with a mean of 75 and a standard deviation of 3. a. what z-score(s) would cut off the middle 40% of the distribution? b. what raw score(s) would cut off the lower 12% of the distribution? c, what raw score(s) would cut off the most extreme 5% of the distribution? d, what T-score(s) would cut off the upper 20% of the distribution?
13. If we have a normal distribution with a mean of...
1. The probability of students choosing the left lunch line at school isp 0.431. Find the...
1. The probability of students choosing the left lunch line at school isp 0.431. Find the variance of the binomial distribution of 982 students choosing the left lunch line today (I point) 0423.2 558.8 15.5 240.8 2. A bonus activity in a popular video game allows the gamer to choos from several boxes to ( point) acquire a rare and useful item. The probability of success is 0.2. With 35 attempts, find the standard deviation. 02.4 7.0 5.6 0.2 3....
An exam is given to all senior high school students, the standard deviation for all the students is given as 30. The average score for 40 students on the exam is 250. Assume the means to be measured to any degree of accuracy (assume that scores are Gaussian distributed). (a) Find the 95% confidence interval (CI) for the average score of all students taking the exam. (b) Find the prediction interval for the score of the next student chosen at...
QUESTION 1 An exam is given to all senior high school students, the standard deviation for all the students is given as 30. The average score for 40 students on the exam is 250. Assume the mea measured to any degree of accuracy (assume that scores are Gaussian distributed). (a) Find the 95% confidence interval (CI) for the average score of all students taking the exam. (b) Find the prediction interval for the score of the next student chosen at...
Problem (ii): Cal Tech Engineering School only considers students in the top 12.5% based on their quantitative GRE scores. The national average GRE score for the quantitative portion for all students taking the exam between July 1, 2001 and June 30, 2004 is 597 with a standard deviation of 148. Assume that GRE scores have a normal distribution. What score would a student need to be considered for Cal Tech Engineering School? (1 point) Problem (iii): A community college has...
1. Ms. Jackson has three sections of the course "Introduction to Statistics.” The midterm results reveal that class A has an average of 82, class B has an average of 88, and class C has an average of 92. If there were 20 students in class A, 25 students in class B, and 27 students in class C, what is the combined mean (the average for all the three classes)? Show your work. 2. In your Biology class, your final...
13. If we have a normal distribution with a mean of 75 and a standard deviation of 3. a. what z-score(s) would cut off the middle 40% of the distribution? b. what raw score(s) would cut off the lower 12% of the distribution? c, what raw score(s) would cut off the most extreme 5% of the distribution? d, what T-score(s) would cut off the upper 20% of the distribution?
13. If we have a normal distribution with a mean of...
1. The probability of students choosing the left lunch line at school isp 0.431. Find the variance of the binomial distribution of 982 students choosing the left lunch line today (I point) 0423.2 558.8 15.5 240.8 2. A bonus activity in a popular video game allows the gamer to choos from several boxes to ( point) acquire a rare and useful item. The probability of success is 0.2. With 35 attempts, find the standard deviation. 02.4 7.0 5.6 0.2 3....
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