Statistics and Probability Answers

Suppose that 4% of all TVs made by A&B Company in 2000 are defective. If eight of 

these TVs are randomly selected from across the country and tested, what is the 

probability that exactly three of them are defective? Assume that each TV is made 

independently of the others.

The average cost of a certain type of grass seed is Birr 4.00. The standard deviation is 

0.1 Birr. Find the minimum percentage of data values, which fall in the 3.82 to 4.18

range.

Suppose that 4% of all TVs made by A&B Company in 2000 are defective. If eight of these TVs are randomly selected from across the country and tested, what is the probability that exactly three of them are defective? Assume that each TV is made independently of the others.

The average number of calories in a 1.5-ounce chocolate bar is 217. Suppose that the distribution of calories is approximately normal with standard deviation is 9. Find the probability that a randomly selected chocolate bar will have more than 190.

The time usage of a certain printer cartridge follows a normal probability distribution with mean 58 hours and standard deviation of 183 minutes. Around what time usage guarantee (in hours) should the manufacturer advertise in order to ensure that only 0.1306% of the cartridges fail to meet the guaranteed time usage?

from digits 3,5,7, and 9 and if no repetition of digit is allowed how many numbers can be formed that are one-digit numbers

how many two-digit numbers can be the digits 0,6,7,8 and 9 of repetition is allowed

weekly wages of 10 workers at random from factory are given below

The average cholesterol content is 180 m deviation of 12 milligrams assume that the variable is normally distributed give a sample of 16 pounds is selected what is the probability that the mean of the sample with the greater than 172 milligrams

Selecting Players How many ways can 4 baseball

players and 3 basketball players be selected from

12 baseball players and 9 basketball players