A new low-calorie pizza introduced by Pizza Hut has an average of 150 calories per slice. If this number is based on a random sample of 100 slices, and the population standard deviation is 30 calories, give a 90% confidence interval for the population mean.
Answer to relevant Questions"Small-fry" funds trade at an average of 20% discount to net asset value. If σ = 8% and n = 36, give the 95% confidence interval for average population percentage. The manufacturer of batteries used in small electric appliances wants to estimate the average life of a battery. A random sample of 12 batteries yields x-bar = 34.2 hours and s = 5.9 hours. Give a 95% confidence interval for ...A transportation company wants to estimate the average length of time goods are in transit across the country. A random sample of 20 shipments gives x-bar = 2.6 days and s = 0.4 day. Give a 99% confidence interval for the ...The Food and Drug Administration (FDA) needs to estimate the average content of an additive in a given food product. A random sample of 75 portions of the product gives x-bar = 8.9 units and s = 0.5 unit. Give a 95% ...According to The Economist, 55% of all French people of voting age are opposed to the proposed European constitution. Assume that this percentage is based on a random sample of 800 French people. Give a 95% confidence ...
Post your question