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3 years ago

Which of the following represent the same level of precision? Check all that apply.

2 answers:

7 0

Precision refers to the degree of significant figures, or basically how many numbers after the decimal. It is the number of digits in a number.
 5.9 liters and 13.6 liters have the same precision (one number after the decimal).
90 liters and 94 liters have the same precision (no decimals).

Correct answer: A and B, C and D

loris [4]3 years ago

5 0

Answer: A) and B) have the same level of precision and C) and D) have the same level of precision.

Step-by-step explanation:

The precision of a numeric value describes the number of digits that are used to show that value.

Two numbers have the same level of precision if they have the same digits after the decimal or having the same level of accuracy. ( or have the same significant numbers after decimals)

Here, in both quantities 5.9 liter and 13.6 liter, there are one digit after the decimal.

Thus they have the same level of precision.

While both quantities 90 liter and 94 liter are non decimal numbers, Therefore, they have the same level of precision.

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Tj worked for 5 hours and 45 minutes how should he write that on his time card

matrenka [14]

Answer:

Tj should write 5.75 hours on her time card.

Step-by-step explanation:

We have been given, Tj worked for 5 hours and 45 minutes.

We will convert 45 minutes to hours by dividing 45 by 60 as one hour has 60 minutes.

$\frac{45 minutes }{60} \times\frac{hour}{minutes}$

=0.75 hours

Hence, Tj should write 5.75 hours on her time card.

4 0

3 years ago

Some parts of California are particularly earthquake- prone. Suppose that in one metropolitan area, 25% of all homeowners are in

aleksandrvk [35]

Answer:

a. Binomial random variable (n=4, p=0.25)

b. Attached.

c. X=1

Step-by-step explanation:

This can be modeled as a binomial random variable, with parameters n=4 (size of the sample) and p=0.25 (proportion of homeowners that are insured against earthquake damage).

a. The probability that X=k homeowners, from the sample of 4, have eartquake insurance is:

$P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}\\\\\\P(x=k) = \dbinom{4}{k} 0.25^{0}\cdot0.75^{4}$

The sample space for X is {0,1,2,3,4}

The associated probabilties are:

$P(x=0) = \dbinom{4}{0} p^{0}(1-p)^{4}=1*1*0.3164=0.3164\\\\\\P(x=1) = \dbinom{4}{1} p^{1}(1-p)^{3}=4*0.25*0.4219=0.4219\\\\\\P(x=2) = \dbinom{4}{2} p^{2}(1-p)^{2}=6*0.0625*0.5625=0.2109\\\\\\P(x=3) = \dbinom{4}{3} p^{3}(1-p)^{1}=4*0.0156*0.75=0.0469\\\\\\P(x=4) = \dbinom{4}{4} p^{4}(1-p)^{0}=1*0.0039*1=0.0039\\\\\\$

b. The histogram is attached.

c. The most likely value for X is the expected value for X (E(X)).

Is calculated as:

$E(X)=np=4\cdot0.25=1$

6 0

3 years ago

If the original number is 15 and the new number is 5, what is the percent decrease?

Arlecino [84]

When a quantity grows (gets bigger), then we can compute its PERCENT INCREASE:

[beautiful math coming... please be patient] PERCENT INCREASE=(new amount−original amount)original amountPERCENT INCREASE=(new amount−original amount)original amount

Some people write this formula with 100%100% at the end,
to emphasize that since it is percent increase, it should be reported as a percent.

So, here's an alternate way to give the formula:

PERCENT INCREASE=(new amount−original amount)original amount⋅100%PERCENT INCREASE=(new amount−original amount)original amount⋅100%

Recall that 100%=100⋅1100=1100%=100⋅1100=1 .
So, 100%100% is just the number 11 !
Multiplying by 11 doesn't change anything except the name of the number!
Hope this helps

6 0

3 years ago

Which of the following numbers have 16 as a factor 96, 144, 218, 276, 304?

Komok [63]

The answer is the last one

6 0

3 years ago

PLEASE HELP ME DO NUMBER 6! ....Thx!!♡♡

bekas [8.4K]

I think the answer is C

7 0

3 years ago