February 26, 2021

How is the sample size for the mean value obtained?

Answer To determine the sample size for the mean value, one must define the confidence level that is required as well as the magnitude of the […]
February 26, 2021

How is the confidence interval for a ratio obtained?

Answer There are methods that can be used to compute the confidence intervals for the ratio of two proportion. These can be classified into …………………………………………………………………………………………………………………………………..
February 26, 2021

What are the “degrees of freedom”?

Answer As a method of understanding how variables parameters are estimated as well as observation interlinked, degree of freedom are regarded as functions of the both […]
February 26, 2021

When do you use the t-distribution and when the normal distribution for the test of hypothesis?

Answer t– distribution is used in describing data following a bell curve while plotting a graph. In this case, a normal distribution is usually used in […]
February 26, 2021

What is the confidence estimate for the mean when σ is known?

Answer Confidence estimate is the validity of an estimation method with lower variable when the sample population’s standard deviation is based on the central limit theorem. […]
February 26, 2021

Explain the meaning of “confidence level”

Answer Confidence level can be referred to as the possible sample percentage expected to incorporate true population limits (Daszykowski et al., 2017). For instance, …………………………………………………………………………………………
February 26, 2021

Explain the Central Limit Theorem.

Answer According to Gupta and Kapoor (2020), Central Limit Theorem is the sampling distribution of the sample as normal distribution when sample size increases. In the […]
February 26, 2021

What issues should be considered in carrying out sampling of populations without normal distribution?

Answer Sampling population is always based on primary enumeration and consideration of techniques such as precision and accuracy. In this case, ……………………………………………………………………………………………………………………..
February 26, 2021

How do you calculate the lower and upper bounds of the mean of a population?

Answer Lower bound is regarded as the smallest value that can be rounded up to an estimated value. Whereas, upper bound is ……………………………………………………………………………………………………………………
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