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scoundrel [369]
3 years ago
10

Which answer represents the following conditional statement in shorthand? If it is not a fruit, then it is not an apple

Mathematics
1 answer:
Gelneren [198K]3 years ago
7 0

Answer:

The shorthand that represent the contrapositive statement is  ~F → ~A

Step-by-step explanation:

The parameters given are;

If it is not a fruit, then it is not an apple

The above is a logic statement which can be rewritten as a conditional statement as follows;

If something is an apple then it is a fruit

Which gives

If p then q

Where:

A = Apple

F = Fruit

Therefore, when we write;

If something is not a fruit, then it is not an apple

We have

~F → ~A

Which is a contrapositive conditional statement

The shorthand that represent the contrapositive statement is therefore, ~F → ~A.

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Answer:

90% confidence interval for the difference between the two population means

( -23.4166 , -6.5834)

Step-by-step explanation:

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

Given first sample size n₁ = 100

Given mean of the first sample x₁⁻ = 178

Standard deviation of the sample S₁ = 35

Given second sample size n₂= 100

Given mean of the second sample x₂⁻ = 193

Standard deviation of the sample S₂ = 37

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

Standard error of two population means

        se(x^{-} _{1} -x^{-} _{2} ) = \sqrt{\frac{s^{2} _{1} }{n_{1} }+\frac{s^{2} _{2} }{n_{2} }  }

       se(x^{-} _{1} -x^{-} _{2} ) = \sqrt{\frac{(35)^{2}  }{100 }+\frac{(37)^{2}  }{100 }  }

        se(x^{-} _{1} -x^{-} _{2} ) =  5.093

Degrees of freedom

ν  = n₁ +n₂ -2 = 100 +100 -2 = 198

t₀.₁₀ = 1.6526

<u><em>Step(iii):-</em></u>

<u><em> 90% confidence interval for the difference between the two population means</em></u>

<u><em></em></u>(x^{-} _{1} - x^{-} _{2} - t_{\frac{\alpha }{2} }  Se (x^{-} _{1} - x^{-} _{2}) , x^{-} _{1} - x^{-} _{2} + t_{\frac{\alpha }{2} }  Se (x^{-} _{1} - x^{-} _{2})<u><em></em></u>

(178-193 - 1.6526 (5.093) , 178-193 + 1.6526 (5.093)

(-15-8.4166 , -15 + 8.4166)

( -23.4166 , -6.5834)

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A

Step-by-step explanation:

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$2 will be your answer

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