The mean monthly gasoline bill for one household is greater than $140. if a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis?
a. there is sufficient evidence to reject the claim mu > $140.
b. there is not sufficient evidence to support the claim mu > $140.
c. there is sufficient evidence to support the claim mu > $140.
d. there is not sufficient evidence to reject the claim mu > $140.

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? will mark the

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.