How to find the expected value and variance of a beta from a Gamma distribution?

What do we call variance in the ANOVA equation, and what notation do we use to represent them?

Sales delay is the elapsed time between the manufacture of a product and its sale. According an article it is quite common for investigators to model sales delay using a lognormal distribution. For a particular product, the cited article proposes this distribution with parameter values μ = 2.08 and o² = 0.03 (here the unit for delay is months). USE SALT (a) What are the variance and standard deviation of delay time? (Round your answers to two decimal places.) 2.01 1.42 ✓ months² months variance standard deviation (b) What is the probability that delay time exceeds 12 months? (Round your answer to four decimal places.) 0096 (c) What is the probability that delay time is within one standard deviation of its mean value? (Round your answer to four decimal places.) 0.8485 X (d) What is the median of the delay time distribution? (Round your answer to two decimal places.) 8.00 months (e) What is the 99th percentile of the delay time distribution? (Round your answer to two decimal places.)…

Answer part 1 and give an explanation on how you got it

Growth of bacteria culture after one week, represented by its size, is known to follow lognormal distribution with mean of 2 and variance of 0.2. What is the upper and lower quartile of the size of the culture after one week?

How to Compute the standard error using Pearson's correlation?

Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is the z-value for a score of 80? -2.0 -0.4 1.0 2.0 0.4

Assuming variance > 1, which of the following must be true? The sample variance is calculated based on the sample size rather than the degrees of freedom The data are normally distributed     Standard deviation < variance   The model will explain more than 50% of the variance of the dependent variable

What is the value of n (the number of observations)? What is the value of Se (standard error for the model) (2 decimals)? What is the average of the x variable (2 decimals)? What is the variance of the x variable (1 decimal)?

What does it mean to be statistically literate?