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Darya [45]
3 years ago
12

Which describes a statistic of a sample?

Mathematics
1 answer:
sesenic [268]3 years ago
6 0
D. Because the rest don't involve necessarily statistics and a sample would be a portion of something
You might be interested in
On the average, a certain light bulb is supposed to last 450 hours. If it
Dafna1 [17]

Answer:

72 novels

Step-by-step explanation:

A number of assumptions are involved regarding operating environment, utilization fraction, and probability of failure as a function of time. The precise meanings of the words "average", "supposed to last", "maximum", and "expect" are involved. The details are too arcane to go into here.

 (450 hours)/(6 1/4 hours/novel)

 = (450/(25/4)) novels

 = (450*4/25) novels

 = 72 novels

6 0
3 years ago
What is the value of fraction 1 over 2x3 3.4y when x = 4 and y = 2? 12.8 14.8 25.8 38.8
just olya [345]
1/2 x^3 + 3.4y when x = 4 and y = 2
1/2(4)^3 + 3.4(2)
1/2 (64) + 6.8
32 + 6.8 = 38.8
7 0
3 years ago
14. 3/64 + 2/32 + 5/16 = <br>what is the answer ​
Anit [1.1K]

Answer:

27/64

Step-by-step explanation:

(7×16)+(5×64)64×16

=112+3201/024

=432/1024

Simplifying 432/1024, the answer is

=27/64

3 0
3 years ago
Read 2 more answers
Pls help<br><br> 2 Question
maw [93]

Answer:

1.320  ,

2.322

Step-by-step explanation:

1. Given that,

a+1/a=18

now,

(a- 1/a)² =( a+1/a)² - 4a. 1/a         [(a- b)² =( a+b)² - 4a. b  ]

           =18² - 4 . 1                      [as, a . 1/a =1 ]    

            =324 - 4

            =320

2.Given that,

a - 1/a=4

now,

a⁴+(1/a)⁴

=(a²)² + (1/a²)²                             [a⁴=(a²)² & (1/a)⁴=(1/a²)²]  

=(a²+1/a²) ²- 2 a². (1/a²)                [a²+b²=(a+b)²-2ab]

=[(a - 1/a)² +2.a. 1/a]² - 2               [a²+b²=(a-b)²+2ab]

=[4²+2]² -2

=[16+2]²-2

=18²-2

=324-2

=322

5 0
3 years ago
PLEASE HELP!
ki77a [65]

Answer: 450 kcal

Step-by-step explanation:

So you know the food is 360 kcal per 1 cup

by setting up a proportion, you can relate the number of kcal to cups.

\frac{360 kcal}{1 cup} = \frac{?kcal}{(3/4 +1/2)cup} \\\\

we can simplify the fraction to this:

\frac{360 kcal}{1 cup} = \frac{?kcal}{(5/4)cup} \\\\

by cross multiplying you can solve the proportion

(360) * (5/4) = (?) * (1)

simplifying gets this:

450 = ?

so he ate 450 kcal total

7 0
3 years ago
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