The Natural Cereal Company claims that the average weight of is cereal boxes is at least 15oz. If a random sample of 24 boxes produced a sample mean x = 13.8 and a sample standard deviation s = 4.8, use the sample mean and standard deviation to test the claim at the 95% (? = 0.05) significance level. Use the hypothesis H0: μ = 15 and H1: μ < 15 with a one-tail test. 18  Find the critical value for this confidence level.

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Q: It has long been stated that the mean temperature of humans is 98.6°F. However, two researchers…

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A: The image is attached below,