My final balance after 48 months was$896.00. If I originally put $800.00 into
the bank, what was the interest raTe

3 %.

Step-by-step explanation:

Ill work it out for simple interest:

Simple interest

I = PRT/100

Here I = 96, R = ?, T = 4 years, P = 800

96 = (800 * R * 4) / 100

R =  (96* 100) / (4 * 800)

= 3%.

(a) The probability of having exactly four arrivals during a particular hour is 0.1754.

(b) The probability that at least 3 people arriving during a particular hour is 0.7350.

(c) The expected arrivals in a 45 minute period (0.75 hours) is 3.75 arrivals.

Step-by-step explanation:

(a) If the arrivals can be modeled by a Poisson process, with λ = 5/hr, the probability of having exactly four arrivals during a particular hour is:

The probability of having exactly four arrivals during a particular hour is 0.1754.

(b) The probability that at least 3 people arriving during a particular hour can be written as

Using

We get

The probability that at least 3 people arriving during a particular hour is 0.7350.

(c) The expected arrivals in a 45 minute period (0.75 hours) is