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alina1380 [7]
3 years ago
13

Suppose you obtain a chi-square statistic of 67.81. Are your results statistically significant if the critical value obtained fr

om the distribution of chi-square is 3.84 with an alpha level of .05? Explain.
Mathematics
1 answer:
Svetach [21]3 years ago
8 0

Answer:

Result is statistically significant.

Step-by-step explanation:

Given that :

Chisquare statistic, χ² = 67.81

Critical value for the distribution, χ²critical = 3.84

α = 0.05

The Decison region :

If χ² statistic > Critical value ; Reject H0 ; this. Eans that result is statistically significant.

Therefore, since, 67.81 > 3.84 ; This means that the result is statistically significant at 0.05

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4 years ago
Solve (x +9)2 = 25.
alexandr1967 [171]

Answer:

x =  - 4 \: or \: x =  - 14

Step-by-step explanation:

We have been given the equation

(x + 9) {}^{2}  = 25

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x + 9 =  \: 15

x + 9 = 5 \: or \: x + 9 =  - 5

x + 9 - 9 = 5 - 9 \: or \: x + 9 - 9 =  - 5 - 9

x =  - 4 \: or \: x =  - 14

<em>THEREFORE, THERE ARE TWO SOLUTIONS FOR OUR GIVEN EQUATION</em>

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8 0
3 years ago
If an object is propelled upward from a height of s feet at an initial velocity of v feet per​ second, then its height h after t
Sergio039 [100]

From the given information we can write the equation:

-16t^2 +96t + 4 = 112

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4t^2 - 24t + 27 = 0


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Graphically, (green line is 112 ft)


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3 years ago
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siniylev [52]

Answer:

the second one

Step-by-step explanation:

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