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Alex777 [14]
2 years ago
10

A noted psychic was tested for extrasensory perception. The psychic was presented with 200 cards face down and asked to determin

e if each card were one of five symbols: a star, a cross, a circle, a square, or three wavy lines. The psychic was correct in 50 cases. Let p represent the probability that the psychic correctly identifies the symbol on the card in a random trial. Assume the 200 trials can be treated as a simple random sample from the population of all guesses the psychic would make in his lifetime. How large a sample n would you need to estimate p with a margin of error of 0.01 with 95% confidence? Use the hypothesized value p = 0.20 as the value for p*.
Mathematics
1 answer:
grin007 [14]2 years ago
4 0

Answer:

r3jehejn wbbwbwbbwmwkwkwjwjwhhejehehehhe

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givi [52]

\\ \rm\Rrightarrow 5-3(2a+1)=-4+10

\\ \rm\Rrightarrow 5-6a-3=6

\\ \rm\Rrightarrow -6a+2=6

\\ \rm\Rrightarrow -6a=6-2

\\ \rm\Rrightarrow -6a=4

\\ \rm\Rrightarrow a=\dfrac{4}{-6}

\\ \rm\Rrightarrow a=\dfrac{2}{-3}

Now

\\ \rm\Rrightarrow a+2

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\\ \rm\Rrightarrow \dfrac{2-6}{-3}

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7 0
2 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:


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Step-by-step explanation:

−4(x+7)−4

Distribute:

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Combine Like Terms:

=−4x+−28+−4

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Answer:

=−4x−32

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