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Dmitry [639]
2 years ago
8

The mean and the standard deviation of the sampled population​ are, respectively, 77.4 and 4.0. Find the mean and standard devia

tion of the sampling distribution of the sample mean x overbar for samples of size n equals 225. Round your answers to one decimal place.
Mathematics
1 answer:
Naily [24]2 years ago
6 0

Answer:

See explanation below.

Step-by-step explanation:

We are looking for the mean and the standard deviation of the sampling distribution of the sample of mean x, given that the mean and standard deviation of sampled population are as follows:

Mean=μ= 77.4

Standard deviation = σ = 4.0

Sample size n = 255

so, the mean of sample mean x will be same as mean of the sampled population:

μₓ = μ = 77.4

and the standard deviation of sample mean x will be standard deviation of the sampled population divided by square root of sample size:

σₓ = σ / √ n

  = 4.0 / √225

= 4.0 / 15

  = 0.3

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Incomple question. However, here's the remaining part of the question:

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Meadow Fritillary 34

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If mAC 178°, and mBC= 42°, what is m∠BDC? 110° 65° 68° 136°
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answer
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