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3 years ago

Quiz 3.1

Mathematics

1 answer:

GalinKa [24]3 years ago

7 0

Answer:

Leading coefficient -1 and Degree 6

Step-by-step explanation:

Leading coefficients mean the number associated with the variable that has the highest degree in your question

$Y=7x^2-x^6+3$

The highest degree is 6 and the leading coefficient would the number associated with x^6 which is -1 so the last option is correct

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zaharov [31]

Answer:

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Step-by-step explanation:

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3 years ago

what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed

kramer

Answer:

$P(x \le 21) = 0.69146$

Step-by-step explanation:

The missing parameters are:

$n = 64$ --- population

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$\sigma = 16$ -- population standard deviation

Required

$P(x \le 21)$

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$\sigma_x = \frac{\sigma}{\sqrt n}$

$\sigma_x = \frac{16}{\sqrt {64}}$

$\sigma_x = \frac{16}{8}$

$\sigma_x = 2$

Next, calculate the sample mean $\bar_x$

$\bar x = \mu$

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$\bar x = 20$

So, we have:

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So, we have:

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$P(x \le 21) = 0.69146$

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3 years ago

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