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Lelu [443]
2 years ago
8

A recent survey indicated that the mean time spent on a music streaming service is 210 minutes per week for the population of a

certain country. A simulation was conducted to create a sampling distribution of the sample mean for a population with a mean of 210. The following histogram shows the results of the simulation.
SAT
1 answer:
Lapatulllka [165]2 years ago
6 0

There are different variations in population size.  The best reason why the simulation of the sampling distribution is not approximately normal is that The sample size was not sufficiently large.

<h3>What takes place if a sample size is not big enough? </h3>
  • When a sample size taken by a person or a researcher  is not big or inadequate for the alpha level and also analyses that one have chosen to do,  it will limit the study statistical power.

Due to the above, the ability to know a statistical effect in one's sample if the effect are present in the population is greatly reduces.

See full options below

Which of the following would be the best reason why the simulation of the sampling distribution is not approximately normal?

A The samples were not selected at random.

B The sample size was not sufficiently large.

с The population distribution was approximately normal.

D The samples were selected without replacement.

E The sample means were less than the population mean.

Previous question

Learn more about population size from

brainly.com/question/1279360

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Answer:

Well u need to think hard next time

Explanation:

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The technique to improve internal validity is D) Addition of a control group.

<h3>What is internal validity?</h3>

Internal validity  serves as the  study  which bring about the establishment of a trustworthy cause-and-effect relationship  that can be found in treatment and an outcome.

it should be noted that  Internal validity also helps to eliminate alternative explanations , hence, The technique to improve internal validity is D) Addition of a control group.

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COMPLETE QUESTOIN:

Which of the following is a technique to improve internal validity ____________?

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B) Participant bias

C) Use of a confederate

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The fact that Saanvl deposits the $4,000, means that initially, the money supply remains the same.

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