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DochEvi [55]
3 years ago
5

The introductory biology class at State University is conducting a study of water quality in their local community. The populati

on mean of a certain beneficial bacteria found in drinking water (µ) is 100, with øx=25. The bacteria counts from the community are given below. Use a two-tailed rejection region with a total area of 0.05. What should you conclude?52 67 103 59 71 86 89 48 57 92 81 75 66 85 94 77
Mathematics
1 answer:
kakasveta [241]3 years ago
8 0

Answer

See the attached files for details.

Step-by-step explanation:

Can you read DVI or PS files?

Download pdf
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> pdf </span>
46622ac3f453647985b02ac14a47e50c.png
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Graph ​ y−5=−23(x+9) ​ using the point and slope given in the equation.
Mashcka [7]

Answer:

Plot (-9,5) then you do rise over run and go down 2 and to the right 3

Step-by-step explanation:

So your points would  be (-9,5) and(-6,3)

6 0
3 years ago
Q5: The probability that event A occurs is 5/7 and the probability that event B occurs is 2/3 . If A and B are independent event
bekas [8.4K]

Answer:

P(A \cap B)

And we can use the following formula:

P(A \cap B)= P(A)* P(B)

And replacing the info we got:

P(A \cap B) = \frac{5}{7} \frac{2}{3}= \frac{10}{21}=0.476

Step-by-step explanation:

We define two events for this case A and B. And we know the probability for each individual event given by the problem:

p(A) = \frac{5}{7}

p(B) = \frac{2}{3}

And we want to find the probability that A and B both occurs if A and B are independent events, who menas the following conditions:

P(A|B) = P(A)

P(B|A) = P(B)

And for this special case we want to find this probability:

P(A \cap B)

And we can use the following formula:

P(A \cap B)= P(A)* P(B)

And replacing the info we got:

P(A \cap B) = \frac{5}{7} \frac{2}{3}= \frac{10}{21}=0.476

7 0
3 years ago
What is the factored form of the expression 9x2 + 6x + 1?
DanielleElmas [232]

Answer:

(3x + 1)²

Step-by-step explanation:

Given

9x² + 6x + 1 ← is a perfect square of the form

(ax + b)² = a²x² + 2abx +  b²

Compare like terms to find a and b

a²x² = 9x² ⇒ a² = 9 ⇒ a = \sqrt{9} = 3

b² = 1 ⇒ b = \sqrt{1} = 1

and 2ab = 2 × 3 × 1 = 6

Thus

9x² + 6x + 1 = (3x + 1)²

4 0
3 years ago
Some one please help me this is my final question i think i have the right answers but im not sure
Xelga [282]
Asked and answered elsewhere.
brainly.com/question/9436435
3 0
3 years ago
Using the graph below, select all statements that are true. A. f(-3.4) = -4 B. This is the graph of the greatest integer functio
Kaylis [27]
I think its b im not sure
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3 years ago
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