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Liono4ka [1.6K]
3 years ago
5

Ignore how i accidentally clicked on one but helppppppppp

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
6 0
I believe it’s B) $466
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Select the most accurate statement regarding the normal distribution. Group of answer choices It is always the appropriate distr
PSYCHO15rus [73]

Answer:

There is a 95% chance that values will be within ±2 standard deviations of the mean.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this question:

According to the empirical rule, 95% of the measures are within 2 standard deviations of the mean. So the correct statement is:

There is a 95% chance that values will be within ±2 standard deviations of the mean.

4 0
3 years ago
Write an exponential function for the chart below:
agasfer [191]

51 * 2^x


51 * 2^0 = 51 * 1 = 51

51 * 2^1 = 51 * 2 = 102

51 * 2^2 = 51 * 5 = 204

...

8 0
2 years ago
Simplify the expression:<br> 4n + 7 +6
Elan Coil [88]

Answer:

4n+13

Step-by-step explanation:

combine like terms.

8 0
2 years ago
Read 2 more answers
Each square below represents one whole ……. What percent is represents by the shade area ?
jeyben [28]
If 13/25 boxes are filled in, 0.52 is the decimal . You then multiply by 100 to get the percent: 52%.
6 0
2 years ago
There are 4 red marbles, 2 white marbles, and 2 black marbles in a bag. Consider the following compound events. What is the prob
sleet_krkn [62]

Answer:

8

Step-by-step explanation:

eight more anakd;odslakhas sfjjjsjas

6 0
2 years ago
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