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Please help!
1. image
Determine the average background radiation.
2. Image
![Background Radiation
Counts
First minute
15
Second minute
18
Third minute
19
Total counts
Average counts](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F30d4e68a-122c-4519-a7de-44e749a24fd0%2F6942c3d5-7253-470e-b708-1b5fada7d4eb%2F5wm7j3h_processed.png&w=3840&q=75)
![ew
Radiation from sources
Counts per
Source Counts
Type of Item
Background
Type of Radiation
minute (cpm)
per minute (cpm)
alpha, beta, and
Source 1
Fiesta-ware plate
167
gamma
Source 2
Instant coffee
31
beta
Source 3
Salt substitute
26
beta
Source 4
Smoke alarm
33
alpha
Source 5
Cream of tartar
35
beta](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F30d4e68a-122c-4519-a7de-44e749a24fd0%2F6942c3d5-7253-470e-b708-1b5fada7d4eb%2Funyx3gh_processed.png&w=3840&q=75)
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