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please guys be careful with the test statistics and p-value I been getting them wrong. also please send the answer a little bit faster ?

please guys be careful with the test statistics and p-value I been getting them wrong. also please send the answer a little bit faster ?

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Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna).I Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is x = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and a = 0.98 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is u = 4.75 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.75 grams? Use a = 0:10. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? OH i u = 4.75 9; H, : 1 = 4.75 g; two-tailed OH : H = 4.75 g; H, : u 4.75 g; right-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. The standard normal, since we assume that x has a normal distribution with unknown G. O The standard normal, since we assume that x has a normal distribution with known a. O The Student's t, since n is large with unknown o. O The Student's t, since we assume that x has a normal distribution with known . Compute the z value of the sample test statistic. ( Round your answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.). Sketch the sampling distribution and show the area corresponding to the P-value

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