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3 years ago

Marks computer weighs 35.769 pounds. What’s the weight of his computer rounded to the nearest hundredth

Mathematics

1 answer:

GaryK [48]3 years ago

4 0

The weight of his computer rounded to the nearest hundredth is 35.77 lb. :)

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Determine the number of degrees of freedom for the two-sample t test or CI in each of the following situations. (Round your answ

tekilochka [14]

Answer:

$df = 24.32$

$df = 30.10$

$df = 30.7$

$df = 25.5$

Step-by-step explanation:

Generally degree of freedom is mathematically represented as

$df = \frac{ [\frac{ s^2_i }{m} + \frac{ s^2_j }{n} ]^2 }{ \frac{ [ \frac{s^2_i}{m} ]^2 }{m-1 } +\frac{ [ \frac{s^2_j}{n} ]^2 }{n-1 } }$

Considering a

a) m = 12, n = 15, s1 = 4.0, s2 = 6.0

$df = \frac{ [\frac{ 4^2 }{12} + \frac{ 6^2 }{15} ]^2 }{ \frac{ [ \frac{4^2}{12} ]^2 }{12-1 } +\frac{ [ \frac{6^2}{15} ]^2 }{15-1 } }$

$df = 24.32$

Considering b

(b) m = 12, n = 21, s1 = 4.0, s2 = 6.0

$df = \frac{ [\frac{ 4^2 }{12} + \frac{ 6^2 }{21} ]^2 }{ \frac{ [ \frac{4^4}{12} ]^2 }{12-1 } +\frac{ [ \frac{6^2}{21} ]^2 }{21-1 } }$

$df = 30.10$

Considering c

$df = \frac{ [\frac{ 3^2 }{12} + \frac{ 6^2 }{21} ]^2 }{ \frac{ [ \frac{3^4}{12} ]^2 }{12-1 } +\frac{ [ \frac{6^2}{21} ]^2 }{21-1 } }$

$df = 30.7$

Considering c

(d) m = 10, n = 24, s1 = 4.0, s2 = 6.0

$df = \frac{ [\frac{ 4^2 }{10} + \frac{ 6^2 }{24} ]^2 }{ \frac{ [ \frac{4^2}{10} ]^2 }{10-1 } +\frac{ [ \frac{6^2}{24} ]^2 }{24-1 } }$

$df = 25.5$

3 0

3 years ago

What is x? Help and explain please

Sergio [31]

The value of X is 17

8 0

3 years ago

Select the correct answer.

Keith_Richards [23]

Answer:

D=1

Step-by-step explanation:

g(x)=x³-9x²+27x-25

g(2)=(2)³-9(2)²+27(2)-25

=8-36+54-25

5 0

3 years ago

Without graphing how can i tell if. X + 4y=28 and 2x +8y=56 is inconsistent. Dependent or neither

Vedmedyk [2.9K]

Hello :
x+4y = 28
multiply by : 2
2x+8y =56
same line (same graph)
the system is : <span>Dependent
when the solution is :
x = k .... k in R
y = -1/4 x +7</span>

3 0

4 years ago

forty percent of 25 students in the class are boys. write 40% as a reduced fraction. then find the ratio of girls to boys in the

Dafna11 [192]

25/10x4=10 boys

100%-40%=60%

25/10x6= 15

boys:girls
10:15

5 0

3 years ago

Read 2 more answers