Construct a 99 confidence interval for the population mean, . Assume the population has a normal distribution. A group of 19 randomly selected employees has a mean age of 22.4 years with a standard deviation of 3.8 years.
Round to the nearest tenth. A) (19.9, 24.9 ) B) (16.3, 26.9 ) C) (17.2, 23.6 ) D) (18.7, 24.1 )
Question 2
The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 3000 miles.
What warranty should the company use if they want 96 of the tires to outlast the warranty? A) 54,750 mi B) 65,250 mi C) 57,000 mi D) 63,000 mi
Consequences of normal and inadequate iodine in the diet.
Normal Ear Alignment
Normal lung and one with emphysema.
The Normal Distribution of Scores for a Standardized Intelligence Test
Population and Settlement
Population and Settlement