A mathematics professor lost a test paper belonging to one of her students. She remembered that the mean score for the class of 20 was 81 and that the sum of the 19 other scores was 1530. What was the grade on the paper she lost?

The average of Molly's 5 quiz scores is 9.0.If her highest test score is dropped , her average is lowered to 8.5 . What was her highest test score ?

My kid wants to know if sledding down the hill is more fun as you have more people piled on the sled with you. She sleds down the hill on her own (making a mental note of how fun it is on a scale of 1 (super lame) to 10 (wheeeeeeeee). She has her friends do the same but with various numbers of passengers (1,2,3,4) on their sleds (again making meticulous mental notes on the fun index). 1) 1 sample t-test 2) Z- SCOre 3)Correlation 4)chi square test of independence

Brandon's score in the high jump at a track and field event showed that he was only able to jump higher than 27% of his competitors. Find the z score for Brandon's high jump score.

Bobby-Joe takes a 25-question test for which he receives 4 points for each correct answer and loses 1 point for each wrong answer. If Bobby-Joe answers all the questions and gets a passing grade of 65%, how many questions did he get right?

Elizabeth has taken 3 exams so far for her sociology class. The first test is worth 35% of her grade, and she scored a 95. Her second and third tests are each worth 20% of her grade. She scored an 80 on test 2 and a 74 on test 3. What is her weighted average score in class so far?

Last semester, Janelle got an A in her English class, a D in her Psychology class, a B in Biology, an A in Movie Appreciation, and a C in Math. Biology was a four-credit class, while the others were three-credit classes. Using the usual grade point scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0), what was her GPA? Round your answer to three decimal places.   GPA =

If I got 8 out of 12 answers the same as a classmate, is it possible for me to get no answers correct and him to get 75% correct?

The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, estimate the proportion of people who were caught after being on the 10 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.   Step 2 of 2: Suppose a sample of 233 suspected criminals is drawn. Of these people, 72 were captured. Using the data, construct the 80% confidence interval for the population proportion of people who are captured after appearing on the 10 Most Wanted list. Round your answers to three decimal places.

In some 4.0 grading systems, a student's grade point aversge (GPA) is calculated by assigning letter grades the following numerical values. (See attachment) Use this grading system to find this student's GPA. Round to the nearest hundredth. Tessa's cumulative GPA for 3 semesters was 3.18 for 46 course units. Her fourth semester GPA was 3.72 for 12 course units. What is Tessa's cumulative GPA for all 4 semesters?