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Problem 3: Holiday Market Sales A small business compares a…

Problem 3: Holiday Market Sales A small business compares average daily revenue from its Holiday Market versus its Regular Winter Market. Market n Mean Revenue ($) Std. Dev. ($) Holiday 12 1,250 210 Regular 10 1,050 190 a) At the 10% significance level, is there evidence that the Holiday Market earns more on average?  Perform all steps for the hypothesis testing procedure.b) Construct a 90% confidence interval for the difference in mean revenue.

Problem 4: Winter Activities Comparison A school compares a…

Problem 4: Winter Activities Comparison A school compares average calories burned per session for students participating in four winter activities. Activity Calories Burned Ice Skating 410, 395, 430, 420, 405 Skiing 520, 505, 495, 510, 530 Snowshoeing 450, 465, 440, 455, 460 Indoor Yoga 300, 310, 295, 305, 290 a) Perform a one‑way ANOVA at α = 0.05.b) Complete an ANOVA table.c) State your conclusion.

Problem 1: Winter Variability A meteorologist claims that wi…

Problem 1: Winter Variability A meteorologist claims that winter temperature swings have become more variable than usual. Historically, the standard deviation of daily winter temperatures is 4°F. A random sample of 20 winter days produced a sample standard deviation of 6°F. a) Test to see whether he is correct at a 5% significance level. b) Use the data to construct a 95% confidence interval around the sample standard deviation.