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jeka57 [31]
3 years ago
8

The Atlantic bluefin tuna is the largest and most endangered of the tuna species. They are found throughout the North Atlantic O

cean and the mean weight is 550 pounds.37 The Center for Biological Diversity is concerned that this species has been overfished and that the mean weight has decreased. Suppose a random sample of 12 Atlantic bluefin tuna was obtained from commercial fishing boats and weighed. The summary statistics were x 5 535.7 and s 5 37.8. Conduct a hypothesis test to determine whether there is any evidence that the mean weight of Atlantic bluefin tuna is less than 550 pounds. Assume the distribution of weight is normal and use a 5 0.05. Write a Solution Trail for this problem.

Mathematics
1 answer:
Maksim231197 [3]3 years ago
3 0

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

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Twelve friends came to Guy's birthday party. He received seven gifts and a total of $95 in cash for his birthday. He buys an air
anastassius [24]
Hey!

Ignore the birthday party stuff and go to 95 first. Subtract 9 from 95 you get the answer 86. Next you need to find how many times 8 goes into 86. 86/8 which is 10 with a remainder of 6. Therefore, Guy can donate to 6 animal shelter. I hope this helps with future problems.
           

5 0
3 years ago
Which equation demonstrates the multiplicative identity property
nignag [31]

<em>Equation b) (-3 + 5i) (1) = -3 + 5i  demonstrates the multiplicative identity property </em>

<h3>Further explanation</h3>

There are several properties in integer multiplication operations

  • 1. closed property

Multiplication between integers will produce integers too

  • 2. commutative property

a x b = b x a

  • 3. associative property

ax (bxc) = (axb) xc

  • 4. identity

ax1 = 1 x a = a

  • 5. distributive  property

* addition

ax (b + c) = axb + axc

* substraction

ax (b-c) = axb - axc

The Multiplicative Identity is <u><em>1 </em></u>

<u><em>The multiplicative identity property states that any number multiplied by 1 will produce an original number. </em></u>

We complete the answer choices available from the problem above:

a) (- 3 + 5i) + 0 = -3 + 5i

O is an identity in the sum operation, the statement is false

b) (-3 + 5i) (1) = -3 + 5i

1 is a Multiplicative Identity of multiplication, so the statement is true

c) (-3 + 5i) (-3 + 5i) = -16-30i

d) (-3 + 5i) (-3 + 5i) = 16 + 30i

choice c and is a multiplication factor, so the statement is false

<h3>Learn more </h3>

the substitution method

brainly.com/question/11705106

brainly.com/question/7162056

The work of a student to solve a set of equations

brainly.com/question/10589573

Keywords: Multiplicative Identity property, integers

4 0
3 years ago
Read 2 more answers
Which of the following is a factor of 2x^2–7x–15<br><br> 2x–3<br> x–5<br> 2x–5<br> x–3
Andreas93 [3]

double bracket factorisation

2 × 15 = 30

find two factors of 30 that add to give -7

(-10, +3)

2x^2 -10x + 3x - 15

2x(x-5) + 3 (x-5)

<em><u>(</u></em><em><u>2x</u></em><em><u>+</u></em><em><u>3</u></em><em><u>)</u></em><em><u> </u></em><em><u>(</u></em><em><u>x-5</u></em><em><u>)</u></em>

<em><u>THE</u></em><em><u> </u></em><em><u>ANSWER</u></em><em><u> </u></em><em><u>IS</u></em><em><u> </u></em><em><u>X-5</u></em>

4 0
3 years ago
What is an equation in slope form for line perpendicular to y=2x+13 that contains (8,-4)
Troyanec [42]

Answer:

The perpendicular line would be y = -1/2x

Step-by-step explanation:

Perpendicular lines have opposite and reciprocal slopes. This means that we take the original slope (2) and negate it (-2). Now that we have the negated version, we need to flip it (-1/2).

With the slope of our new equation decided, we simply need to plug it along with the point into point-slope base form and then solve for y.

y - y1 = m(x - x1)

y + 4 = -1/2(x - 8)

y + 4 = -1/2x + 4

y = -1/2x

3 0
3 years ago
Mariner Middle School has 550 students the height of each student is measured and recorded at the beginning of the year . A scho
tatiyna

Answer:

C) A histogram because the class organizes the data into different ranges or intervals.

Step-by-step explanation:

A histogram is a graphical representation of numerical data. It is an approximate approach that groups a set of data into ranges on the x axis and having their match frequencies on the y axis.

A histogram makes it possible to represent a large amount of data and frequency in just one graph because of the interval/range option.

Because Mariner Middle school has a large number of students (550) and their height organized into equal intervals, the histogram is the best option.

3 0
2 years ago
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