In a test of a particular weight loss program, welghts of 40 subjects are recorded before and after the program. the before -and-after weights result in a correlation coefficient of 0.876. assuming a 0.05 significance level, find the critical valuesis there sufficient evidence to support the claim of a linear correlation between before -and- after weights ?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is