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tiny-mole [99]
3 years ago
5

G for exercises 13 and 14, assume the sample populations do not have equal standard deviations and use the .05 significance leve

l: (a) determine the number of degrees of freedom, (b) state the decision rule, (c) compute the value of the test statistic, and (d) state your decision about the null hypothesis.
Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0
I believe it isC. Not fully sure
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Serjik [45]
Third option, decreasing
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3 years ago
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ratelena [41]
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Q # 20 please help to solve
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If submarine is at the surface (the initial position) and then dives 375 ft, the coordinate  of submarine becomes -375 ft <span>relatively to the initial position. When the submarine dives another 175 ft down, the coordinate of submarine becomes -375-175=-550 ft relatively to the initial position.
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8 0
3 years ago
Solve the system of equations y=9x+13 y=2x+48
MakcuM [25]
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9x+13=2x+48

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7 0
3 years ago
if the kinetic energy of an aeroplane moving at a velocity of 100m/s is 200j ,what is the mass of the aeroplane
Black_prince [1.1K]

Answer:

<u>0.04kg</u>

Step-by-step explanation:

Kinetic energy Formula: eK=0.5×m×v²

to work out mass

we can rearrange the formula and make it:

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now insert the missing digits into the formula:

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work it out, and you get your answer

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Hopefully this helped-have a good day)

8 0
2 years ago
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