5. In order to compare two methods for finding the percentage of iron in a compound, ten different compounds were analyzed by both methods. The results are given in the table. Compound Method A e f g. i 13.3 17.6 4.1 17.2 10.1 3.7 5.1 7.9 8.7 11.6 Method B 13.4 17.9 4.1 17.0 10.3 4.0 5.1 8.0 8.8 12.0 Since two methods are used for each compound, use a paired differences test to determine whether the two methods give the same results. Be sure to show all the details of your test, including any conditions you тust meet, Hо, На, test statistic, p-value, аnd the conclusion of your test.

Many questions in research can be expressed as two competing statements about the population parameter. These two statements are called the null and the alternative hypotheses. Usually, the researcher hopes the sample evidence will be in favor of the alternative hypothesis, the new theory. It is important to be able to state the theories that are being put to a test.    Suppose that 40% of all supermarkets in the US use recyclable plastic bags. We would like to assess if the proportion of supermarkets in Michigan that use recyclable plastic bags is more than the stated rate. For this scenario, write out the hypotheses to be put to the test and define the parameter of interest in context of the problem. H0:Ha: The parameter p represents ___(provide appropriate definition in context)________

A music student wants to know if taking a difficult math course will improve his musical ability. Which of these is the null hypothesis? The student's math scores will improve. There will be no change in math scores. There will be no change in musical ability. The student's musical ability will improve.

This my third time posting the same question. Because no one answer it straight to me. I already answered the question. Could you please tell me which one of these are not correct. and if so Could you please tell me the correct answer first then explain it. Also could you please highlight the correct answer for each one

Hello. Could anyone help me on this question? I have tried it four times and only one attempt left. What I am confusing is that some choice are not individual and variables. Like all young children, children who eat snack and cartoon characters. But if i leave them there, it shows me I am wrong. Pls help me on this and explanation would be appreciated. Thanks!

Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28 minutes with a standard deviation of 5 minutes. In a given week, a bus transported passengers 40 times. (a) What is the probability that the average transport time was more than 30 minutes? (b) What is the probability that the average transport time was more than 30 minutes given that it exceeds 20 minutes? (c) What is the probability that the total travelling time is greater than 1180 minutes?

In performing a hypothesis test, one should decide whether to reject or not reject the null hypothesis before summarizing the results. True or false. Explain.

A sociologist wants to study what proportion of people have significant relationship problems due to financial stress. A previous study she is aware of estimated it to be 32% but she believes this has increased in modern times. She collects a random sample of 150 people and 63 of them report relationship problems due to financial stress. Conduct an appropriate hypothesis test in questions #22-#25. Compute the Z-score for this hypothesis test and round to two decimal places. z = 1.58 z = 2.06 z = 2.63 z = 0.84

A school psychologist is interested in the efficiency of administration for a new intelligence test for children. In the past, the Wechsler Intelligence Scale for Children (WISC) was used. Thirty sixth grade children are given the new test to see whether the old intelligence test or the new intelligence test is easier to administer. Is this a non-directional or directional hypothesis? How do you know?

Compare statistical testing with legal methods used in a U.S. court setting. Then discuss the following topics in class or consider the topics on your own. Please write a brief but complete essay in which you answer the following questions. (a) In a court setting, the person charged with a crime is initially considered to be innocent. The claim of innocence is maintained until the jury returns with a decision. Explain how the claim of innocence could be taken to be the null hypothesis. Do we assume that the null hypothesis is true throughout the testing procedure?What would the alternate hypothesis be in a court setting?(b) The court claims that a person is innocent if the evidence against the person is not adequate to find him or her guilty. This does not mean, however, that the court has necessarily proved the person to be innocent. It simply means that the evidence against the person was not adequate for the jury to find him or her guilty. How does this situation compare with a…