From generation to generation, the mean age when smokers first start to smoke varies. however, the standard deviation of that age remains constant at around 2.1 years. a survey of 39 smokers of this generation was done to see if the mean starting age is at least 19. the sample mean was 18.2 with a sample standard deviation of 1.3. do the data support the claim at the 5% level?

76%

step-by-step explanation:

24% are dogs and the remaining is 76% because 100-24=76

x=6 and x=3

beep beep imma sheep

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.