In the year 2005, a picture supposedly painted by a famous artist some time after 1695 but before 1745 contains 96.7 percent of its carbon-14 (half-life 5730 years).
From this information, could this picture have been painted by this artist? ?
Approximately how old is the painting?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.