Math

StatisticsQ&A LibraryIn a class of 29 students, 28 of them took an exam in class and 1 student took a make-up exam the following day. The professor graded the first batch of 28 exams and found an average score of 81 points with a standard deviation of 7.4 points. The student who took the make-up the following day scored 60 points on the exam. a) Does the new student's score increase or decrease the average? b) The new average is c) Does the new student's score increase or decrease the standard deviation of the scores?Question

In a class of 29 students, 28 of them took an exam in class and 1 student took a make-up exam the following day. The professor graded the first batch of 28 exams and found an average score of 81 points with a standard deviation of 7.4 points. The student who took the make-up the following day scored 60 points on the exam.

a) Does the new student's score increase or decrease the average?

b) The new average is

c) Does the new student's score increase or decrease the standard deviation of the scores?

Tagged in

Find answers to questions asked by students like you.

Q: Answer true or false to each of the following statements and explain your answers. a. The number of ...

A: Click to see the answer

Q: In a recent study, 100 males used a new weight-loss supplement, and 80 of them experienced weight lo...

A: It is given that the number of males experienced weight loss after two weeks is 80 out of 100. Thus,...

Q: We have presented a “data scenario.” In each case, decide which type of grouping (single-value, limi...

A: Quantitative variable: A variable that provides numerical values of individual and Arithmetic operat...

Q: An air conditioner contractor has prepared an offer to repair the air conditioner compressor. To pre...

A: Introduction to Exponential distribution: A random variable X is said to have a exponential distribu...

Q: Based on a poll,40% of adults believe in reincarnation. Assume that 6 adults are randomly selecte...

A: Click to see the answer

Q: Suppose that C and D are events such that P(C) = 4/5 and P(C&D) = 3/10. Find P(D| C).

A: Click to see the answer

Q: You wish to test the following claim (HaHa) at a significance level of α=0.005α=0.005. Ho:μ=86....

A: It is given that the sample size is 58 with mean 90 and standard deviation is 6.3. Given hypotheses ...

Q: Eight of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is th...

A: It is given that 8 of the 50 digital video recorders in an inventory are known to be defective.

Q: Identify three ways in which the total number of observations of bivariate data can be obtained from...

A: Click to see the answer