A random sample of the price (in $ ) of a hamburger at 33 restaurants in ACME City found: ak​​=$8.34,s=$1.35. Build a 95

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A Random Sample Of The Price In Of A Hamburger At 33 Restaurants In Acme City Found Ak 8 34 S 1 35 Build A 95 1 (42.33 KiB) Viewed 33 times

A Random Sample Of The Price In Of A Hamburger At 33 Restaurants In Acme City Found Ak 8 34 S 1 35 Build A 95 2 (49.47 KiB) Viewed 33 times

A random sample of the price (in $ ) of a hamburger at 33 restaurants in ACME City found: ak​​=$8.34,s=$1.35. Build a 95%Cl for the population mean price of a hamburger in ACME City. Round all intermediate calculations to two decimals, then construct the Cl and enter like this: (min, max). Do not include the $ sign. Be sure to use parentheses or you will be marked wrong. Note: if you use a built-in Cl command on a calculator/computer, you might get marked wrong due to rounding. Use the formulas given in the text/notes. a. Since n≥30, We use s, not σ We use a Z-interval We use a T-interval It is not important that hamburger prices be normally distributed
In the past, trout in Clearwater Creek were 14.9 inches long on average. A recent sample of 34 trout from the creek found xˉ=12.6,s=2.2. a. Build a 99%Cl for the current mean length of trout in Clearwater Creek. Round all intermediate calculations to two decimals, then construct the Cl and enter like this: (min, max). Be sure to use parentheses or you will be marked wrong. Note: if you use a built-in Cl command on a calculator/computer, you might get marked wrong due to rounding. Use the formulas given in the text/notes. trine tan n-tuple Imores. b. Use your Cl to decide whether the mean length of trout in Clearwater Creek has changed from 14.9 inches. Yes, the mean has probably changed since the new Cl does not contain the old value of μ No, the mean has probably not changed since the new Cl contains the old value of μ Yes, the mean has probably changed since the old value of μ is not right in the middle of the new Cl No, the mean has not changed since the old value of μ is right in the middle of the new Cl