Mathematics, 05.02.2021 22:10 kayranicole1
An experiment on the teaching of reading compares two methods, A and B. The response variable is the Degree of Reading Power (DRP) score. The experimenter uses Method A in a class of 100 students and Method B in a comparable class of 100 students. Students are assigned to the two classes at random. Suppose that in the population of all children of this age the DRP score has the N(75, 30) distribution if Method A is used and the N(74, 40) distribution if Method B is used. Let us call the mean DRP score for 100 students in the A group. Let us call the mean DRP score for 100 students in the B group ý.
Required:
What is the probability that the mean score for the B group will be at least five points higher than the mean score for the A group?
Answers: 1
Mathematics, 21.06.2019 23:00
Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain
Answers: 2
Mathematics, 22.06.2019 00:30
When you flip a biased coin the probability of getting a tail is 0.6. how many times would you expect to get tails if you flip the coin 320 times?
Answers: 1
Mathematics, 22.06.2019 00:30
What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?
Answers: 1
An experiment on the teaching of reading compares two methods, A and B. The response variable is the...
Computers and Technology, 30.05.2021 19:00
English, 30.05.2021 19:00
English, 30.05.2021 19:00
Mathematics, 30.05.2021 19:00
Mathematics, 30.05.2021 19:10
Social Studies, 30.05.2021 19:10
Physics, 30.05.2021 19:10
Chemistry, 30.05.2021 19:10
Mathematics, 30.05.2021 19:10
Geography, 30.05.2021 19:10
Mathematics, 30.05.2021 19:10
Biology, 30.05.2021 19:10