Mathematics

Mathematics, 22.06.2019 20:00, ahoney2233

2. the following values represent the scores from the midterm general statistics exam last summer. (the exam was worth 150 points.) 102 106.5 119.5 120 124.5 125 127.5 130 133 134 135 136 136 138.5 139.5 140 142.5 143.5 143.5 144 147.5 a. present these data in a frequency table with 5 classes. b. create the frequency table using letter grades as your classes. (refer to the syllabus for my grading scale.) c. would you consider this a successful exam

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Mathematics, 29.06.2019 06:10, Haileydusenbery

Students in a large statistics class were randomly divided into two groups. the first group took the midterm exam with soft music playing in the background, and the second group took the exam with no music playing. after the exam was completed, a researcher compared deidentified exam scores of the two groups.which of the following is the reason this experiment was not blind? a. the sample sizes in both groups was large.b. the students knew whether or not music was playing while they were taking the exam.c. students were randomized into the two groups.d. some of the students may not have studied for the exam.e. researchers looked at exam scores for the two groups.

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Mathematics, 17.07.2019 04:10, alysonmariefont

Aprofessor has found that scores on the midterm exam in her classes predict scores on the final exam. the regression constant in the linear prediction rule for predicting final exam scores from midterm exam scores is 32 and the regression coefficient is 05. complete parts (a) through (k) below. (a) indicate the predictor variable, and (b) the criterion variable. (c) write the linear prediction rule for this example. figure the predicted final exam scores for each of eight students whose scores on the midterm were (d) 30, (e) 40, (f) 50, (g) 60, (h) 70, (i) 80, (j) 90, and (k) 100.

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Mathematics, 26.08.2019 18:30, destanybrunson

In a class on advanced water buffalo husbandry, the midterm exam raw scores (i.e., the values of x) form a normal distribution, with a mean of 239 and a standard deviation of 37. 6) [5 pts.] what percentage of exam scores are more than 1.5 standard deviations of distance away from the mean? 7) [5 pts.] what proportion of students had an exam score between 180 and 250? 8) [5 pts.] 20% of the students had an exam score that was higher than what value? 9) [5 pts.] which exam score corresponds to the 67th percentile?

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Mathematics, 10.10.2019 22:30, joelpimentel

Two of your friends each received the results of their first midterm exam this term. andy's score on the spanish exam was 22.5 points. the distribution of spanish exam scores was normal (bell-shaped) with an average score of 20 points (out of 25 points possible) and a standard deviation of 1.97 points. jennifer's score the the math exam was 72 points. the distribution of math exam scores was uniform over the range of 20 to 80 points, with a mean of 50 points and a standard deviation of 17.32 points.over dinner your friends begin discussing their results, each claiming they did better on their exam. they remember you are taking stats 250 this term and turn to you for to resolve the question: who did better on their midterm exam?

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