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jekas [21]
3 years ago
15

The number of lightening strikes on a square kilometer of open ground in a year has mean 5 and standard deviation 2.1. The Natio

nal Lightening Detection Network used automatic sensors to watch for lightening in a sample of 16 randomly chosen square kilometers. Q1): What are the mean and standard deviation of the mean number of strikes per square kilometer
Mathematics
1 answer:
Alinara [238K]3 years ago
7 0

Answer:

5 ; 0.525

Step-by-step explanation:

Given that :

Population Mean number of strikes per square kilometer (μ) = 5

Population standard deviation of strikes per square kilometer (σ) = 2.1

Sample size (n) = 16

The sample mean number of strikes per square kilometer (m) = mean Number of strikes per square kilometer in the population.

μ = m ; 5 = 5

Hence,

Sample mean = 5

Standard deviation = standard error = σ/√n

Standard Error = 2.1 / √16

Standard Error = 2.1 / 4

Standard Error = 0.525

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Step-by-step explanation:

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Does the order in which the two transformations in a composite transformation affect the final
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The order in which the two transformations in a composite transformation affect the final answer

<h3>How to determine the composite transformation?</h3>

To determine if order matters or not, I will use the following example and illustration.

Let the coordinate of point A be:

A = (2, 5)

Perform the following transformations:

  • Translate by (x, y + 1)
  • Dilate by a scale factor of 2

First order: Translation before dilation

The translation by (x, y + 1) would give:

A' = (2, 5 + 1)

A' = (2,6)

The dilation by a scale factor of 2 would give

A" = 2 * (2,6)

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Second order: Dilation before translation

The dilation by a scale factor of 2 would give

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The translation by (x, y + 1) would give:

A'' = (4, 10 + 1)

A'' = (4,11)

See that the final coordinates in both orders are not the same.

Hence, the order in which the two transformations in a composite transformation affect the final answer

Read more about transformation at:

brainly.com/question/1548871

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