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Five randomly selected students took a math aptitude test before they began their statistics...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
A group of high school seniors took a scholastic aptitude test. The resulting math scores had...
A group of high school seniors took a scholastic aptitude test. The resulting math scores had a mean 527.8 with a standard deviation of 177.8, verbal mean 505.5 with a standard deviation of 147.3, and the correlation between verbal and math scores was r=0.521. Complete parts a through f below. a) What is the correlation? The correlation is Round to three decimal places as needed.) b) Write the equation of the line of regression predicting verbal scores from math scores....
Five students took a math test before and after tutoring. Their scores were as follows. subject...
Five students took a math test before and after tutoring. Their scores were as follows. subject A B C D E Before 71 66 67 77 75 After 75 75 65 80 87 Using a 0.01 level of significance, test the claim that the tutoring has an effect on the math scores How can I solve this question? Can I solve this question using ti83?
Question 5: A mathematics placement test is given to all 1st year students at a small...
Question 5: A mathematics placement test is given to all 1st year students at a small college. A student who receives a grade above 35 must take an extra mathematics course. The placement test scores and the final grades for 20 students who took the regular course were recorded. a. Find the equation of the regression line to predict course grades from placement test scores. b. If 60 is the minimum passing grade, below which placement test score should students...
hree students took a statistics test before and after coaching, but coaching did not effect the...
hree students took a statistics test before and after coaching, but coaching did not effect the scores of students i.e mean change in scores is zero. Their scores are as follows: Students A B C Before 70 88 61 After 71 89 60 Find the value of test statistic-t for matched pairs.(Round off up to 3 decimal places)
The principal randomly selected six students to take an aptitude test. Their scores were 79 88...
The principal randomly selected six students to take an aptitude test. Their scores were 79 88 83 80 72 78 Assume that the population is normally distributed. a) Check assumptions and determine an appropriate interval procedure. b) Find a 90% confidence interval for the mean score for all students. (Do not use any functions in TI=>STAT=>TESTS to show your work.) c) Interpret the confidence interval.
the data below are the final exam scores of 10 randomly selected statistics students and the...
the
data below are the final exam scores of 10 randomly selected
statistics students and the number of hours they studied for the
exam. What is the best predicted value for the exam score for a
student who stuided 2 hours? Assume that the varibles x and y have
a significant correlation.
Question 10 1 pts The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam....
urgent please QUESTION 17 Thirty-six randomly selected students took a Statistics test. If the sample mean...
urgent please
QUESTION 17 Thirty-six randomly selected students took a Statistics test. If the sample mean was 72 and the sample standard deviation was 12, what will the the margin of error when constructing 95% confidence interval for the mean score of all students assuming that the population is normally distributed 4.00 5.15
The data below are the quiz scores of 10 randomly selected statistics students and the number...
The data below are the quiz scores of 10 randomly selected statistics students and the number of hours they studied for the quiz. Hours, x= 3, 5, 2, 8, 2, 4, 4, 5, 6, 3 Scores, y= 65, 80, 60, 88, 66, 78, 85, 90, 90, 71 What is the best predicted value for the quiz score for a student who studied 2 hours? Assume that the variables x and y have a significant correlation. Group of answer choices 67...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 A statistics instructor recorded the grades...
5. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean = 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 C. The probability of a student selected at random having scored between 400 and 575 6. A statistics instructor recorded...
A group of high school seniors took a scholastic aptitude test. The resulting math scores had a mean 527.8 with a standard deviation of 177.8, verbal mean 505.5 with a standard deviation of 147.3, and the correlation between verbal and math scores was r=0.521. Complete parts a through f below. a) What is the correlation? The correlation is Round to three decimal places as needed.) b) Write the equation of the line of regression predicting verbal scores from math scores....
Question 5: A mathematics placement test is given to all 1st year students at a small college. A student who receives a grade above 35 must take an extra mathematics course. The placement test scores and the final grades for 20 students who took the regular course were recorded. a. Find the equation of the regression line to predict course grades from placement test scores. b. If 60 is the minimum passing grade, below which placement test score should students...
the
data below are the final exam scores of 10 randomly selected
statistics students and the number of hours they studied for the
exam. What is the best predicted value for the exam score for a
student who stuided 2 hours? Assume that the varibles x and y have
a significant correlation.
Question 10 1 pts The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam....
urgent please
QUESTION 17 Thirty-six randomly selected students took a Statistics test. If the sample mean was 72 and the sample standard deviation was 12, what will the the margin of error when constructing 95% confidence interval for the mean score of all students assuming that the population is normally distributed 4.00 5.15
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