Mathematics, 07.11.2020 01:00 AgentPangolin
The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was absent on the test day and his score wasn't included in the calculation. If his score of 81 was added to the distribution of scores, what would happen to the mean and standard deviation?
A. Mean will increase, standard deviation will increase
B. Mean will stay the same, standard deviation will decrease
C. Mean will stay the same, standard deviation will stay the same
D. Mean will decrease, standard deviation will decrease
E. Mean will stay the same, standard deviation will increase
Answers: 3
Mathematics, 21.06.2019 20:30
Find the value of x for which line a is parallel to line b
Answers: 1
Mathematics, 21.06.2019 20:30
Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2
Answers: 1
Mathematics, 22.06.2019 04:30
Jamie has 7/10 of a pound of chicken to cook for dinner if she's going to put the chicken in between three people how much chicken will each person get
Answers: 1
Mathematics, 22.06.2019 04:30
Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?
Answers: 2
The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was abse...
Health, 11.07.2019 10:00
Social Studies, 11.07.2019 10:00
Health, 11.07.2019 10:00
Mathematics, 11.07.2019 10:00
Physics, 11.07.2019 10:00
History, 11.07.2019 10:00
Arts, 11.07.2019 10:00
Computers and Technology, 11.07.2019 10:00