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Kay [80]
2 years ago
10

Help plesssssssssssssssssssssssssssssss

Mathematics
2 answers:
Semenov [28]2 years ago
6 0

Answer:

(d) 12

Step-by-step explanation:

suter [353]2 years ago
3 0

Answer:

12

Step-by-step explanation:

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4. Geologists estimate the time since the most recent cooling of a mineral by counting the number of uranium fission tracks on t
MariettaO [177]

Answer:

In this case we use the Poisson distribution because we are talking about the occurrence of an event (number of tracks) over a specified interval (in this case an area interval).

The probability of the event occurring x times over an interval is:

P(x) = nˣ × e⁻ⁿ ÷ x!

where n is the mean.

a) P(7) = 6⁷ × e⁻⁶ ÷ 7! = 0.1376

b) P(x ≥ 3) = 1 - P(x < 3) = 1 - P(2) - P(1) - P(0)

P(2) = 6² × e⁻⁶ ÷ 2! = 0.0446

P(1) = 6¹ × e⁻⁶ ÷ 1! = 0.0149

P(0) = 6⁰ × e⁻⁶ ÷ 0! = 0.0025

P(x ≥ 3) = 0.9380

c) P(2 < x < 7) = P(3) + P(4) + P(5) + P(6) = 0.0892 + 0.1339 + 0.1606 + 0.1606 = 0.5443

d) The mean is going to be 6.

e) The standard deviation is √n = √6 = 2.4

3 0
2 years ago
At a local store, Kelly and Martin bought some notebooks and pencils. Kelly bought 4 notebooks and 25 pencils for 16.71. Martin
grandymaker [24]

Answer:

9.17

Step-by-step explanation:


6 0
3 years ago
Help me please (look the picture)
umka2103 [35]
You add 1 to the numerator each time
4 0
3 years ago
Please Help Me:!!!!!
butalik [34]

Answer:

Vertical stretch of factor of 3

translated to the right 2

translated up 5

Step-by-step explanation:

6 0
3 years ago
celina measured the height of a window frame as 5.55 feet, but the actual height was 6 feet. What is the percentage of error in
skad [1K]
(6/5.55) * 100 = 108.11 %

The percent error is 108.11 %
6 0
2 years ago
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