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Mathematics

1 answer:

ZanzabumX [31]3 years ago

7 0

Answer:

-3x + 8

Step-by-step explanation:

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Factor x^4 -4x^3 -4x^2 +36x-45

Makovka662 [10]

Factor x^4 -4x^3 -4x^2 +36x-45

Answer:

3 0

3 years ago

In the beginning of the study, a randomly selected group of 121 students scored an average of 252 words per minute on the readin

Alborosie

Answer:

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a sample size larger than 30 can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$