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Likurg_2 [28]
3 years ago
11

suppose that a company claims that its boxes of breakfast cereal contain 15 ounces of cereal on average, with a standard deviati

on of 0.5 ounces. If you took a sample of 50 boxes of cereal what would be expected mean amount of cereal per box a.16 a. 16 b.15 c.17 d.18
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer: 15 ounces


Step-by-step explanation:

It is given that a company claims the average cereal in boxes of breakfast cereal = 15 ounces

And we know that the mean amount is nothing but the average amount of any data.

Mean is synonym word of average .

The statistical mean is the mean or average that is used to find the central tendency of the data in any question.

Thus, the expected mean amount of cereal per box = 15 ounces.

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F(z) = (z - 5)(2x + 7) (73 = 3) has zeros at x = -3.5, x=3/7 , x=5 What is the sign of f on the interval 3/7 < x <5?
Gwar [14]
<h3>Answer:     Negative</h3>

======================================================

Explanation:

3/7 = 0.42857 approximately

Pick a number between that value and 5, not including either endpoint. Let's say we pick x = 2

Plug x = 2 into the f(x) function

f(x) = (x - 5)(2x + 7)(7x-3)

f(2) = (2 - 5)(2*2 + 7)(7*2-3)

f(2) = (2 - 5)(4 + 7)(14-3)

f(2) = (-3)(11)(11)

f(2) = -363

The actual result doesn't matter. All we're after is whether the result is positive or negative. We see the result is negative. This means f(x) is negative when 3/7 < x < 5. The f(x) curve is below the x axis on this interval.

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3 years ago
X = –14.6 and y = 2.5.<br> –x – |y| 
vaieri [72.5K]
Get on algebra calculator (mathpapa) and you should get the answer

8 0
3 years ago
Read 2 more answers
A home gardener estimates that 24 apple trees will have an average yield of 104 apples per tree. But because of the size of the
d1i1m1o1n [39]

Answer:

The farmer should plant 14 additional trees, for maximum yield.

Step-by-step explanation:

Given

Trees = 24

Yield = 104

x \to additional\ trees

So, we have:

Trees = 24 + x

Yield = 104 - 2x

Required

The additional trees to be planted for maximum yield

The function is:

f(x) = Trees * Yield

f(x) = (24 + x) * (104 - 2x)

Open bracket

f(x) = 24 * 104 + 104x - 24 * 2x - x * 2x

f(x) = 2796 + 104x - 48x - 2x^2

f(x) = 2796 + 56x - 2x^2

Rewrite as:

f(x) = - 2x^2 + 56x + 2796

Differentiate

f'(x) = -4x + 56

Equate f'(x) = -4x + 56 to 0 and solve for x to get the maximum of x

-4x + 56 = 0

-4x =- 56

Divide by -4

x =14

The farmer should plant 14 additional trees, for maximum yield.

5 0
3 years ago
Evaluate 7+5^2*4 <br> Algebra 1
vagabundo [1.1K]

Hi there!

<em><u>Answer:</u></em>

<em><u>=107</u></em>

<em><u>*The answer must have a positive sign.*</u></em>

Step-by-step explanation:

<h2><u>Lesson: Order of operations</u></h2>

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

It can also go left to right.

First, you do exponents.

5^2=5*5=25

7+25*4

Then, you multiply from left to right.

25*4=100

Finally, you add from left to right.

100+7=107

I hope this helps you!

Have a nice day! :)

-Charlie

8 0
3 years ago
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Answer:

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Step-by-step explanation:

y=mx+b

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3 years ago
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