how can statistical procedures can help determine whether the data is attributable to chance factors?

Q: From Theoretical and Experimental Probability, which of the two method is more appropriate and valid…

A: Theoretical probability is determined based on the prior information. Theoretical probability :…

Q: What is revising probabilities?

A: Revising probabilities :-Probability judgements may have to be revised if new information is…

Q: Why can’t all the probabilities for a Poisson random variable be displayed in a probability…

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Q: What are the example of experiments or activities wherein we can apply the computation of…

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Q: Discuss the applications of error probability?

A: Before discussing the applications of error probability, first we discuss about the error…

Q: How do probability and nonprobability samples differ?What are some types of probability samples?…

A: Probability samples: The observations in the population have equal probability of including in the…

Q: Explain the Difference between the sample space and random variables?

A: Sample space: The sample space is the collection of all outcomes, if a random experiment is…

Q: How do you determine the values of a random variable?

A: A random variable is a numerical description of the outcome of a statistical experiment. A random…

Q: What does the power of a hypothesis test tell you? How is it related to the probability of making a…

A: Solution: It is required to mention what does the power of a hypothesis test tell you? How is it…

Q: What are some tips and advice for approximating probabilities with the emperical method?

A: The empirical rule states that if a distribution is unimodal and symmetric i.e. more or less…

Q: In your own words, define a random variable.

A: We need to define Random Variable.

Q: Explain the importance of mean and variance of random variable in decision making

A: Mean of a Random Variable: The mean or expectation of a random variable X, denoted by E(X), is a…

Q: When two unbiased dice are thrown, find the expected value

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Q: What is a random variable?

A: A random variable is a variable whose possible values are numerical outcomes of a random phenomenon.…

Q: How can the sample covariance be used to estimate the covariance of random variables?

A: The covariance is used to measure the relationship between two random variables, that is, to what…

Q: How does the deviation calculation help you determine whether your coin tosses are close enough to…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: Explain the two different types of random variables?

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Q: 9. How does sampling with replacement affect probability?

A: Significance of simple random sample without replacement (SRSWOR) and simple random sample with…

Q: Explain what expected value means in your own words.

A: To explain about expected value.

Q: What is the importance of sample size and choice of test organism in studies involving…

A: A sample size is the size of the set of outcomes.. For a particular study , most of the times , it…

Q: What are the criteria for an experiment to be a binomial experiment?

A: Let us consider the below example: A fair coin is flipped 10 times; X represents the number of…

Q: difference between

A: Type I error A Type I error means rejecting the null hypothesis when it’s actually true. It means…

Q: What is the difference between the two types of random variables?

A: Random variables are those that assume numerical values determined by the outcome of an experiment.…

Q: • Enumerate and differentiate the approaches in calculating probabilities.

A: We have to define the different approaches of calculating probabilities:

Q: Define Coverage probabilities?

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Q: What is non probability sampling and explain the types of the same

A: Probability sampling is the sampling technique that allows a researcher to select a sample where the…

Q: Show Differentiate between a significance level and a probability level?

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Q: Why is randomization the best method for dealing with extraneous variables?

A: Here we have to explain why randomization is the best method for dealing with extraneous variables

Q: Roughly speaking, what is an experiment? an event?

A: An experiment is any procedure which can be repeated infinitely and contained a well-defined set of…

Q: What is the distribution of sample means? How does the concept of probability and the distribution…

A: Introduction -   Hypothesis - A hypothesis is an approximate explanation that refers to the set of…

Q: Enumerate and differentiate the approaches in calculating probabilities.

A: Since the question number is not specified, we'll be answering the first question only. Please…

Q: What does The statistical hypotheses consist of?

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Q: Explain Expected bias ?

A: In statistics expected bias refers to the difference between the expected value to the true…

Q: What is chance variation? What are its causes? How can it be altered

A: Chance variation  or 'chance error' or 'random error' is the inherent error in any predictive…

Q: Is it possible for a probability sample to be biased and to also lack independence? Please explain.

A: Probability sampling refers to the selection of a sample from a population, when this selection is…

Q: Suppose that a high school student is preparing to take the SAT exam. Explain why his or her…

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Q: Define bias in terms of expected value?

A: In general bias is a tendency for a statistical parameter to be overestimated or underestimated.

Q: How do I find a pooled variance of 2 sample groups?

A: There are two sample groups.

Q: What is the relationship between the joint probability and marginal probabilities of two independent…

A: The relationship between the joint probability and marginal probabilities of two independent events…

Q: he concept of probability, including the notion of an experiment, outcomes, and sample space. How…

A: Probabilities The ratio of the number of outcomes favorable for the event to the total number of…

Q: What are the differences between theoretical probability, subjective probability and experimental…

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Q: How does the concept of probability and the distribution of sample means relate to the testing of a…

A: We know that the sample mean distribution will be either normal distribution or T distribution. If…

Q: What type of probability involves repeating an experiment and recording the relative frequency of…

A: Probability which involves repeating an experiment and recording the relative frequencies of the…

Q: Define Conditional variance?

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Q: If the null hypothesis is true, then what does the distribution of sample means?

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…