Neuroblastoma, a rare form of malignant tumor, occurs in 11 children in a million, so its probability is 0.11.
four cases of neuroblastoma occurred in cape breton, which had 13636 children. assume the number of neuroblastoma cases in a group of 13636 children follows poisson distribution.
1. assuming that neuroblastoma occurs as usual, find the mean number of cases in groups of 13636 children.

The mean number of cases in groups of 13636 children is 0.15 .

Step-by-step explanation:

Given : The probability that a child have neuroblastoma : p= 0.000011

We assume the number of neuroblastoma cases in a group of 13636 children follows Poisson distribution.

Let n= 13636

Since the  neuroblastoma occurs as usual, then the mean number of cases in groups of 13636 children would be

Hence, the mean number of cases in groups of 13636 children = 0.15

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: