Biology

Biology, 06.07.2019 10:40, lexident

To test a hypothesis you plan and conduct is a

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Social Studies, 12.09.2019 00:20, CoolRahim9090

What methods may an economist use to test a hypothesis? frame the hypothesis as a normative statement. conduct one or more experiments. formulate an alternative hypothesis. wait for real-world events to confirm or refute the hypothesis. gather historical data.

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Social Studies, 26.09.2019 21:30, tagpro85

Suppose you are asked to conduct a hypothesis test on the population mean. what type of hypothesis test would you use? what assumptions do you need to make about the process when you are conducting a hypothesis test on the population mean in order for your results to be valid?

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Mathematics, 07.11.2019 21:31, lilkit

Our friend the waffle-man is back and wants to do more hypothesis tests for proportions, but this time for four waffle recipes. he randomly selected 250 waffle consumers and found that 100 (40%) of the 250 preferred waffle no. 2. he conducted a hypothesis test withh0: p=0.25h0: p=0.25, ha: p> 0.25ha: p> 0.25.notice the proportion under the null distribution is p_0 = 0.25. the test statistic for this problem is 5.47. you can verify for yourself that the probability of observing this test statistic is nearly zero assuming the null hypothesis is true.now suppose we wish to conduct the same hypothesis test again if the true proportion is 0.35. in other words, we happen to know the true parameter value is 0.35, something that is typically not known. how does the test statistic change with this new information? what is the resulting p-value? hint: try writing what the null hypothesis and test statistic would be given this new information. what would change, if anything? select one: a. the test statistic becomes 1.61 with a p-value of 0.537.b. the test statistic becomes 1.66 with a p-value of 0.095.c. the test statistic becomes -3.23 with a p-value of 0.9995.d. the test statistic does not change from its original value of 5.47, and the associated p-value does not change.e. none of the other answers are correct.

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Mathematics, 10.11.2019 02:31, shygrl05

Assume that data are in a random sample of size n from a normal n(µ, 1) distribution with unknown µ. the null hypothesis is always h0 : µ = 0. the first step for each problem is to find the sampling distribution of the sample mean x¯.suppose the alternative is that µa > 0. you are going to use the sample mean ¯x as the test statistics. you plan to conduct the test by rejecting h0 if ¯x is sufficiently large, i.e. ¯x > x0 for some x0, and you have already decided that you will reject always the null hypothesis if the p-value of the test is < 0.05. 1 2 use r to compute x0 as a function of n for n = 5, 10, 20, 50, 100. the interval [x0, [infinity]) is called the rejection region.

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