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lisabon 2012 [21]
3 years ago
5

The surface area of the world is about 4/10 water. If a very small, non-dangerous meteoroid lands on the earth, what is the prob

ability it does not land in the water?
.04


60%


.4


2/5
Mathematics
1 answer:
AlexFokin [52]3 years ago
6 0

Answer:

60%. please give brainliest

Step-by-step explanation:

You might be interested in
Check My Work According to the National Association of Realtors, it took an average of three weeks to sell a home in 2017. Data
Salsk061 [2.6K]

Complete question :

According to the National Association of Realtors, it took an average of three weeks to sell a home in 2017. Suppose data for the sale of 39 randomly selected homes sold in Greene County, Ohio, in 2017 showed a sample mean of 3.6 weeks with a sample standard deviation of 2 weeks. Conduct a hypothesis test to determine whether the number of weeks until a house sold in Greene County differed from the national average in 2017. Useα = 0.05for the level of significance, and state your conclusion

Answer:

H0 : μ = 3

H1 : μ ≠ 3

Test statistic = 1.897

Pvalue = 0.0653

fail to reject the Null ; Hence, we conclude that their is no significant to accept the claim that number I weeks taken to sell a house differs.

Step-by-step explanation:

Given :

Sample size, n = 40

Sample mean, x = 3.6

Population mean, μ = 3

Standard deviation, s = 2

The hypothesis :

H0 : μ = 3

H1 : μ ≠ 3

The test statistic :

(xbar - μ) ÷ (s/√n)

(3.6 - 3) / (2/√40)

0.6 / 0.3162277

Test statistic = 1.897

Using T test, we can obtain the Pvalue from the Test statistic value obtained :

df = n - 1; 40 - 1 = 39

Pvalue(1.897, 39) = 0.0653

Decison region :

If Pvalue ≤ α ; Reject the null, if otherwise fail to reject the Null.

α = 0.05

Pvalue > α ; We fail to reject the Null ; Hence, we conclude that their is no significant to accept the claim that number I weeks taken to sell a house differs.

7 0
3 years ago
PLEASE HELP. LOTS OF POINTS.
Angelina_Jolie [31]
Complete the square by using the following form:
(x+\frac{b}{2})^2 = x^2 +bx+(\frac{b}{2})^2

y = (x^2 -6x) +16 \\  \\ y = (x^2 -6x+9) + 16 - 9 \\  \\ y = (x-3)^2 + 7

The vertex is at (3,7)
The squared term is positive so it opens up and vertex is a minimum.
4 0
4 years ago
Read 2 more answers
Can someone please help me
neonofarm [45]
The perimeter of the rectangle is given by the formulae,

Perimeter= 2(l+w)

Where
l = s +  \frac{1}{2}
is the length and
w = s
is the width of the rectangle.


Now let us substitute into the formula,


Perimeter= 2(s+ \frac{1}{2}  + s)


Perimeter= 2(2s+ \frac{1}{2} )
The above expression corresponds to option
F.

Now when we expand the bracket, we obtain,
Perimeter= 4s+ 1
This also corresponds to option A.

The correct answers are


A and F
8 0
4 years ago
If the point (0, -3) lies in the solution set of an inequality, which of the following could be that inequality?
Darya [45]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
Vicky's checking account charges a $12.25 monthly service fee and a $0.26
MrRa [10]

Answer:

No

Step-by-step explanation:

0.26*16 + 12.25 = 16.41

16.41 < 16.50

5 0
4 years ago
Read 2 more answers
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