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Oksanka [162]
3 years ago
9

For conducting a​ two-tailed hypothesis test with a certain data​ set, using the smaller of n1minus1 and n2minus1 for the degree

s of freedom results in dfequals​11, and the corresponding critical values are tequalsplus or minus2.201. Using the formula for the exact degrees of freedom results in dfequals​19.063, and the corresponding critical values are tequalsplus or minus2.093. How is using the critical values of tequalsplus or minus2.201 more​ "conservative" than using the critical values of plus or minus​2.093?
Mathematics
1 answer:
Dafna1 [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Using the critical values of t=±2.201 is more "conservative" than using the critical value of ±2.093 because it is more likely to reject the null hypothesis using the greater value i-e t=±2.201

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a movie theater earns $3946 by selling 428 tickets. if a full price costs $10.25 and a discount costs $8, how many full price ti
kherson [118]
We need a system of equations here, one equation based on the NUMBER of tickets sold and another based on the MONEY earned by the sales.  We have 2 different types of tickets:  full price (f) and discount (d).  The total number of tickets sold is 428; therefore, the first equation is f + d = 428.  That accounts for the number of tickets sold.  Each full price is 10.25 which can be represented as 10.25f, and each discount ticket costs 8 which can be represented as 8d.  The money earned by selling these tickets at those prices was 3946.  That means that the second equation is 10.25f + 8d = 3946.  We will solve the first bolded equation for f to get f = 428 - d.  Sub that value in for f in the second bolded equation:  10.25(428-d) + 8d = 3946.  Distribute to get 4387 - 10.25d + 8d = 3946.  Combine like terms to get -2.25d = -441.  Solving for d we get 196.  That means that there were 196 discounted tickets sold.  Put that in for d in the first bolded equation to find the number of full price tickets.  f + 196 = 428,  and f = 232.  There were 232 full price tickets sold.  There you go!
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4 years ago
Anyone know how to do these?
erastovalidia [21]

Answer:

B. 1/m¹⁸

Step-by-step explanation:

To simplify the equation, we start with the values inside the brackets.

Therefore  m⁻¹m⁵ results to m⁴.

This is because the sign between the m⁻¹ and m⁵ is multiplication, and when multiplying figures that have a similar base, we add the indices.

that is, -1+5=4

then we divide m⁴ by m⁻², that is, m⁴/m⁻²=m⁶

To divide figures that have the same base we subtract the powers.

That is, 4-(-2)=6

the resulting expression from inside the brackets will be (m⁶)³ which results to m⁻¹⁸ which is the same as 1/m¹⁸

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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