If the population of the world is growing at a linear pace of y=.08x+4.9 (in billions) since 1980. So in 1985 x=5 etc. What is the population in 2020?
• 7.9 billion people
8.4 billion people
8.3 billion people
O 8.1 billion people

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

The sum of two numbers is 86, and their difference is 20. find the two numbers

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?