Blog

20 Assume poisson. Given that mean is 6.4, find P(X>5).

9 There are seven candidates running for the election. In how many ways could they select four of them to a) attend the game, b) attend the rally, c) attend the cabinet meeting, and d) attend the dinner with the Governor?

02 Use the table below. Find the probability a randomly selected individual is up and red. up down blue 48 79 red 57 68

04 Use the table below. Find the probability a randomly selected individual is down given that they are red.updownblue4879red5768

13 See problem 11 above. Calculate the maximum usual value.

05 There were 64 persons dining in the restaurant during the evening. Of these, 27 were dining in this restaurant for the first time. If three diners are randomly selected, find the probability all three were first time diners.

P is the point (3,5), Q is the point (9,3).M is the midpoint of PQ. PQR is a triangle. The vector QM is  ([y][z]) Vector QR is(-13) The vector PR is([v][w])

What is shown at the arrow? (The area not white matter)

Determine the width of the geometric penumbra of a Cobalt-60 beam at 8 cm depth in a patient undergoing treatment at 87 cm SSD. The source diameter is 3 mm and the patient’s surface is 41 cm from the distal end of the collimator. 

If the dose at Dmax is 275 cGy, what is the dose at a depth of 13 cm, where the percent depth dose is 53.3%?