Pls help me please help me out and give me the answers

Mathematics

2 answers:

Alona [7]3 years ago

4 0

1)The area is 16 inches

Evgen [1.6K]3 years ago

3 0

Answer:

for 1. the area is 16 sq inches

Step-by-step explanation:

4 times 4=16

to find the area you multiply the length by height, since its a square all of them are equal so it'd be 4 times 4

You might be interested in

Pls help i need help pls asap

Gre4nikov [31]

Answer:

I Think C most likey because u can dived them very easily

3 0

3 years ago

Read 2 more answers

The mean output of a certain type of amplifier is 183 watts with a variance of 121. If 78 amplifiers are sampled, what is the pr

koban [17]

Answer:

0.8278 = 82.78% probability that the mean of the sample would differ from the population mean by less than 1.7 watts

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation(which is the square root of the variance) $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ ;