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A research project amongst 250 statistic students was conducted to investigate whether an extra revision session would help students to obtain the high distinction (HD) grade in the course. Halfof the participants in the research took the workshop and half did not. At the end of the semester, 26 of those who did the session obtained HD and 18 of those who did not also obtained HD. Perform a test at the 10% level of significance to see if the revision session is effective in helping students to obtain the HD grade.
Would it be Ho 26, ha<26? Or do you look at 250? Very confused and need help/direction. It then asks to give the standardized test statistic - which I think it would be
z=x-u
o/square root of n
The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway varies from 15 to 35 mph and is uniformly distributed.
Penguins diving A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay under water.
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation?
Suppose the garden had pests. What is the probability the gardener used nothing?- Suppose the gardener used chemicals. What is the probability there were pests?
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One state lottery has 500 prizes of $1, 75 prizes of $15, 15 prizes of $100, 5 prizes of $450, 2 prizes of $1225, and 1 prize of 2500. Assume that 28,000 lottery tickets are issues and sold for $1. What is the lottery's expected profit per ticket?
What is the probability of observing between 10 and 15 accidents (inclusive) during the coming year? Copyright 2010 Cengage Learning. All Rights Reserved.
Psychology and Human Behavior Many Americans own a DVR or subscribe to a special TV recording service. For example, the Hopper from DISH network allows users.
Suppose that there is a probability of 1/50 that you will win a certain game. If you play the game 50 times, independently, what is the probability that you
For each of the following examples, explain whether the researcher has made a correct decision or has made a Type 1 or Type 2 error. Explain why.
In these questions we have to make a decision about the given claim. For example, if the claim is that a coin favors heads and sample results consists of 11 heads in 20 flips, conclude that there is not sufficient enough evidence to support the cl..
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