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 ……………………………………………………………………………………………………………………
February 26, 2021

What is the effect of sample size, n, in the calculation of σ from the sample?

Answer Sample sizes are always proportional to the zero margin denoted as (σ) researchers can easily constrain with small sample size for economic reason. Small sample […]
February 26, 2021

3. What is the purpose of determining the normal distribution of the mean and the value Z?

Answer Normal distribution elaborates how variable values are distributed in a symmetric distribution where most of the cluster observation in the central peak and the p […]
February 26, 2021

Importance of the knowledge of the standard error of the population in sampling distribution

Answer On the other hand, standard error is regarded as inaccuracy in examining estimates. The sample mean of the measured variables, mean and frequency comparisons such […]
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