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NeTakaya
3 years ago
11

A sample of 100 cans of peas shown an average weight of 14 oz with a standard deviation of 0.7 Oz. Construct a 95% confidence in

terval for the mean of the population.
​

Mathematics
1 answer:
Ahat [919]3 years ago
5 0

A 95% confidence  interval on the z-table is 1.96.

Now find the standard error using the formula: standard deviation /  square root sample size:

0.7 / √100 = 0.07

Multiply to the confidence interval: 1.96 x 0.07 = 0.137 = 0.14

Now add and subtract tot he average weight:

14 - 0.14 = 13.86

14 + 0.14 = 14.14

The answer is 13.96 ≤ u ≤ 14.14

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A block of iron has a mass of 3152 kg and a volume of 0.4 m².Calculate the density of the block of iron, in kg/m3.
Lisa [10]

The density of the block of iron in kg/m^3 is equal to 7,880.

<u>Given the following data:</u>

  • Mass of block = 3152 kg
  • Volume of block = 0.4 m^2

To calculate the density of the block of iron in kg/m^3:

<h3>What is density?</h3>

Density can be defined as mass all over the volume of an object or body. Thus, density is equal to mass per unit volume of an object.

<h3>How to calculate density</h3>

Mathematically, the density of a substance is given by this formula;

Density =\frac{Mass}{Volume}

Substituting the parameters into the formula, we have;

Density=\frac{3152}{0.4}

Density = 7,880  kg/m^3

Read more on density here: brainly.com/question/13833323

6 0
2 years ago
Pls help fast <br><br> brainlest to enyone who helps
Artemon [7]

Answer:

B STEP 2

Step-by-step explanation:

5/8 is not more than 1

3 0
2 years ago
What’s the correct answer for this question?
stepladder [879]

Answer:

6 pounds and 15 ounces

Step-by-step explanation:

Since 1 pound is equal to 16 ounces you divide 111 by 16 and get 6 remainder 15 which is basically 6 pounds and 15 ounces. Hope this helps!

8 0
2 years ago
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LenKa [72]

Answer:

6x

Step-by-step explanation:

Since 2 sides are equal to 3x-3, multiply 3x-3 by 2.

=6x-6

Subtract 18x+6 - 6x-6

= 12x

Since 2 there are 2 sides missing, 12x divided by 2

=6x

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2 years ago
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nika2105 [10]

Answer:

Its is 85

Step-by-step explanation:

It is 85 because you need to see out of all of those numbers which one is one is in the middle so just mark one number from each side untill you get to the middle number!

7 0
3 years ago
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