Mathematics, 08.10.2020 15:01 GrainLeaf
A researcher wants to test whether a certain sound will make rats do worse on learning tasks. It is known that an ordinary rat can learn to run a particular maze correctly in 18 trials, with a standard deviation of 6. (The number of trials to learn this maze is normally distributed.) The researcher now tries an ordinary rat in the maze, but with the sound. The rat takes 38 trials to learn the maze. (a) Using the .05 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing, and illustrate your answer with a sketch showing the comparison distribution and the rejection region.. (b) Then explain your answer to someone who has never had a course in statistics (but who is familiar with mean, standard deviation, and Z scores).
Answers: 2
Mathematics, 21.06.2019 19:30, kayli53531
Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?
Answers: 1
Mathematics, 21.06.2019 21:30, anaemigarcia
What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14
Answers: 2
A researcher wants to test whether a certain sound will make rats do worse on learning tasks. It is...
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