4 years ago

Explain your thinking, is the 07385200131-1 UPC code valid?

Mathematics

1 answer:

PSYCHO15rus [73]4 years ago

3 0

Answer:

a. Using multiplication and addition to check the digits, it is <u>invalid</u> because the total is 51 and does not end in a 0

Step-by-step explanation:

The sum of alternate digits is multiplied by 3. Those digits are ...

0 3 5 0 1 1 . . . . sum of 10

The sum of remaining alternate digits is added to that.

7 8 2 0 3 1 . . . . sum of 21

The result of the arithmetic ...

mod(3×10 + 21, 10) = 1 . . . . . <em>should be zero</em> for valid GTIN-12 UPC code

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Suppose that we wish to assess whether more than 60 percent of all U.S. households in a particular income class bought life insu

IceJOKER [234]

Answer:

A. 0.0049

B. Yes

Step-by-step explanation:

Sample proportion = 0.64

N = 1000

Population proportion = 0.60

We solve for standard deviation

= √p(1-p)/n

= √0.60(1-0.60)/1000

= √0.60x0.40/1000

= √0.00024

= 0.0155

The probability of sample >=0.64

Z>=0.64-0.60/0.0155

Z >= 0.04/0.0155

So z >= 2.5806

Using excel this equal to 0.0049

0.0049 is probability of sample proportion being 0.64 at least.

This answer in a shows that than 60% of households in the united states income class purchased life insurance last year.

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because you set up your problem: 3c+2+2c-7=90
then combine all like terms: 5c-5=90
Add 5 to both sides: 5c=95
then divide both sides by 5: c=19
Plug in your answer: 3(19)+2=59

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