On the first day of june, there were about 17.79 h of day light in a city, five months later there was about 9.50 h of daylight, what was the percent decrease?

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.

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)