Question:A coin was tossed 400 times and the headturned up 216 times. Test the hypothesis thatthe coin is unbiased.

Answered: Question: A coin was tossed 400 times…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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If you are asked to conduct a test, you need to write all the 5 steps.Step I. write correct hypothesisStep II. Calculate the value of test statisticStep III. Find out the rejection region or calculate the p-valueStep IV. Write the decisionStep V. Write a conclusion in the context of the problem The government of a country reports its literacy rate aa 52%. A non-governmental organization believes it to be less. The organization takes a random sample of 600 inhabitants and obtains a literacy rate of 42%. Perform the relevant test at the 1% level of significance.a. using the critical value approachb. using the p- value approach
An exam consists of twenty multiple-choice questions. Each question has five different possible answers, only one of which is correct. A person randomly guesses on each question. What isthe variance of the number of questions that are correct?
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1. Explain the types of one-tailed tests. Explain the two-tailed test. Discuss when each would be used.
In a memory test, the test subjects are given a large number and are asked to memorize it. Historical records show that 80% of test subjects pass the test. To pass the test, a subject must exactly repeat all the digits in the number after two hours. A random sample of 625 people to take the memory test is going to be chosen. Let p be the proportion of people in the sample who pass the test. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of P. 0 (b) Find the standard deviation of p. 0 (c) Compute an approximation for P(P >0.84), which is the probability that more than 84% of the people in the sample pass the test. Round your answer to four decimal places. 0 X
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Please advise. Keep on tossing a coin until one gets a head. List 2 possible outcomes from this sample.
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.

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Question: A coin was tossed 400 times and the head turned up 216 times. Test the hypothesis that the coin is unbiased.