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3 years ago

Nancy Grew 4 watermelon Dan grew 2 watermelon how many watermelon did they grow in all

Mathematics

2 answers:

nirvana33 [79]3 years ago

8 0

Answer:

6 watermelon

Step-by-step explanation:

4+2=6

zhenek [66]3 years ago

5 0

Answer:

im not sure if this is a trick question because this is extrmemly easy but the answer would be 6 watermelons in total

Step-by-step explanation: 4+2=6

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Convert 778.5 million km to scientific notation.

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7.785 × $10^{8}$

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3 years ago

A rectangle has vertices at these coordinates. (−6, 3), (−6, 5), (2, 3) What are the coordinates of the fourth vertex of the rec

Scilla [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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2 years ago

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4 years ago

A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense he

krok68 [10]

Answer:

The calculated value z = 2.65>1.64 at 90% of level of significance

we reject null hypothesis at 10 % level of significance

The therapists use a method is not equivalent to random guesses

Step-by-step explanation:

Step1:-

Given n = 279

Among 279 trials, the touch therapists were correct 118 times

Proportion of success 'p' = 118/ 279 = 0.4229

She flipped a coin to select either her right hand or her left hand

The Population proportion P = 1/2 = 0.5

level of significance level ∝ = 0.10

Null hypothesis H₀: P = 0.5

Alternative hypothesis H1: P ≠ 0.5

Q =1-P = 0.5

Step2:-

The z- statistic

Z = p-P/ S.E

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S.E = √PQ/n

S.E = 0.029

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|z|=|-2.65|=2.65

Conclusion:-

The calculated value z = 2.65

The tabulated value z = 1.64 at 10% 0r 90% of level of significance

The calculated value z = 2.65>1.64 at 90% of level of significance

we reject null hypothesis at 10 % level of significance

The therapists use a method is not equivalent to random guesses

6 0

3 years ago

Nancy Grew 4 watermelon Dan grew 2 watermelon how many watermelon did they grow in all​

Nancy Grew 4 watermelon Dan grew 2 watermelon how many watermelon did they grow in all