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elena-s [515]
3 years ago
5

40 - 10 + 20

Mathematics
1 answer:
marin [14]3 years ago
4 0

Answer:

The answer is 50

Step-by-step explanation:

40-10=30

30+20=50

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A study was conducted to compare the overall length of two species of lake trout, labeled A and B. Ten fish from each species we
Fofino [41]

Answer:

Step-by-step explanation:

Given that Ten fish from each species were randomly selected from each of three lakes and their respective lengths were recorded

a) Experimental unit is the length of two species of fish of lake trout.

b) Population is the set of all species in the lake

c) Sample is the twenty taken for testing

d) Response variable is the length of the fish

e) This is an observational study as already existing is recorded without any external control to change.

6 0
3 years ago
The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b
zepelin [54]

Answer:

If the task is performed in less than or equal to 130.8 seconds, then, the individuals qualify for advanced training.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 150 sec

Standard Deviation, σ = 15 sec

We are given that the distribution of time taken is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.10

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Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 150}{15} = -1.282\\x = 130.8  

Thus, if the task is performed in less than or equal to 130.8 seconds, then, the individuals qualify for advanced training.

8 0
3 years ago
Plz help yo boi out thank u
Travka [436]

Answer:

either the first or second but id go with the second one!

Step-by-step explanation:

6 0
3 years ago
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Simplify. Assume that a is a positive integer and a&gt;2. (a-2)!/a!
Paul [167]

Answer:

C. 1 / (a(a - 1))

Step-by-step explanation:

View Image

Just know that:

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8 0
3 years ago
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Answer:

You see the answer just character limit

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2 years ago
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