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Jet001 [13]
3 years ago
13

1) Eduardo has five friends, Alfalfa, Bernie, Corey, Dominik, and Elsa He is going to select two of them to go

Mathematics
1 answer:
Bumek [7]3 years ago
7 0

Answer: he can make 3 groups of 2 first group him and Alfalfa second group Bernie and Corey the third group Dominik and Elsa.

Step-by-step explanation:

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100 points who ever get this right!!
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Answer:

3. A = (0,-3)

    B = (4,-2)

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    B = (4,-5)

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Step-by-step explanation:

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Determine which is the appropriate approach for conducting a hypothesis test. Claim: The mean RDA of sodium is 2400mg. Sample da
pshichka [43]

Answer:

c) use the student t- distribution.

t = 22.23

t= 22.23 > 1.645 at 149 degrees of freedom

Null hypothesis is rejected

Step-by-step explanation:

<u>Step (i)</u>:-

Given sample size 'n' =150

The mean RDA of sodium is 2400mg

The mean of the Population 'μ' = 2400mg

Given  mean of the sample x⁻ = 3400

The standard deviation of the sample 'S' = 550

<u>Step(ii):</u>-

Null hypothesis :H₀: μ = 2400

Alternative hypothesis : H₁: μ ≠2400

The test of statistic

        t  = \frac{x^{-}-mean }{\frac{S}{\sqrt{n} } }

        t  = \frac{3400-2400}{\frac{550}{\sqrt{150} } } =  22.23

degrees of freedom γ= n-1 = 150 -1 =149

t₀.₉₅ =  1.645

<u>Conclusion:</u>-

t= 22.23 > 1.645 at 149 degrees of freedom

Null hypothesis is rejected

The mean RDA of sodium is  not equal to 2400mg

 

     

7 0
3 years ago
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