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Mila [183]
3 years ago
10

Construct an interval estimate for the given parameter using the given sample statistic and margin of error. For μ1-μ2, using x¯

1-x¯2=8 with margin of error 8 .
Mathematics
1 answer:
maks197457 [2]3 years ago
4 0

Answer: CI = (0, 8)

Step-by-step explanation: Confidence interval for difference between mean is given below as

Lower limit

= (x1 - x2) + margin of error

Upper limit

= (x1 - x2) - margin of error

where x1 - x2 = 8 and margin of error = 8

For lower limit,

= 8 - 8 = 0

For upper limit

= 8 + 8 = 16

Hence CI = (0, 8)

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Someone please help me on this one
irakobra [83]
12lb=$27
14lb=$x

\frac{12}{27} = \frac{14}{x}


cross multiply

12x=378
divide both sides by 12
x=31.5= $31.50

Answer=$31.50
8 0
3 years ago
Find the GCF of 72 and 81. Show your work.
Tanzania [10]

Answer:

9.

Step-by-step explanation:

81/9=9

72/9=8

3 0
3 years ago
Read 2 more answers
A prime number less than 100 is selected randomly. what is the probability that its square has units digit $7$?
liberstina [14]
Any number ends with 0, 1, 2, 3, 4, 5, 6, 7, 8 or  9

Given any number. The square of this number is the last digit of square of the original numbers units digit.

For example

23*23 ends with 9 (3*3=9)

149*149 ends with 1 (9*9=81)

2564*2564 ends with 6 (4*4=16) 

and so on

so all the possible unit digits of a square number are {0, 1, 4, 5, 6, 9}

because:

0*0= 0 ; 1*1=1; 2*2=4; 3*3=9; 4*4=16; 5*5=25, 6*6=36; 7*7=49; 8*8=64, 9*9=81

Thus, the probability that the square of a number selected from any set of numbers being 7, is 0.


Answer: 0
 

4 0
3 years ago
Which statement is an example of the transitive property of congruence?
ira [324]

Answer:

Step-by-step explanation:

The transitive property in general says. The transitive property of congruence states that two objects that are congruent to a third object are also congruent to each other.

 if a=b and b=c, then a=c

The transitive property of congruence replaces the equal sign with a congruence symbol, and replaces a, b, c with any geometric figure. Here the geometric figures used are triangles KLM, PQR, and STU.

 If ΔKLM ≅ ΔPQR and ΔPQR ≅ ΔSTU, then ΔKLM ≅ ΔSTU hope this helps

7 0
3 years ago
Find the rectangular coordinates of (7, 150°)
Y_Kistochka [10]

Answer:

The coordinates are (-7sqrt(3)/2, 7/2).

Step-by-step explanation:

The rectangular coordinates from polar coordinates is found by:

x = r*cos(theta)

y = r*sin(theta)

Substituting the given values, we get:

x = 7*cos(150 deg) = 7*(-sqrt(3)/2) = -7sqrt(3)/2

y = 7*sin(150 deg) = 7*(1/2) = 7/2

The coordinates are (-7sqrt(3)/2, 7/2).

I hope this helps! :)

4 0
3 years ago
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