Question: Answer a and b 2. A simple random sample of 20 new automobile models yielded the data shown to the right on fuel tank capacity,

Answer a and b

2. A simple random sample of 20 new automobile models yielded the data shown to the right on fuel tank capacity, in gallons. 18.7 17 4 17.9 13.4 13.9 14.2 14.2 12.6 15.7 19.5 17 8 18.2 20.4 20.4 14.5 22.3 19.6 13.2 18.7 16.1 a. Find a point estimate for the mean fuel tank capacity for all new automobile models. (Note: Ex; =338.7) A point estimate is gallons (Type an integer or a decimal. Do not round.) b. Determine a 95% confidence interval for the mean fuel tank capacity of all new automobile models. Assume o = 3.30 gallons The 95% confidence interval is from gallons to gallons. (Do not round until the final answer. Then round to two decimal places as needed.)

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