Solution-: The density curve is best describe as appropriate normal.
1.Density curve describe overall pattern of the distribution.
2. It is alwa on the horizontal axis.
3. It covered area is 1.
The density curve is best describe as negatively skewed positively skewed abnormal approximately normal
The chi-square distribution is _____________. Select one: a. Positively skewed b. Negatively skewed c. Normally distributed d. Uniformly distributed
In a positively skewed curve where is the median relative to the mean?
An histogram showing distribution of 17,18,20,21,21,22,23,23,23,24,24,24,24,25,25,25,26. what is the shape of the distribution? 1.)Positively skewed 2.) Negatively Skewed 3.) Normal 4.) Bimodal
Graphing Given a histogram with a line for a normal curve superimposed on it, interpretation of the distribution of scores may be ambiguous. If the bars on the histogram are above the line for the normal distribution superimposed on the histogram, then the variable distribution is leptokurtic ("peaked"). If they are below the line, then it is platykurtic ("flat"). However, if the bars cross the line on only one side, then it is skewed. If they cross more on the...
Let z be a normal random variable with mean 0 and standard deviation 1. What is P(z > -1.1)? -0.8643 0.8643 -0.1357 0.1357 If all possible random samples of size n are taken from a population that is not normally distributed, and the mean of each sample is determined, what can you say about the sampling distribution of sample means? It is approximately normal provided that n is large enough. It is positively skewed. It is negatively skewed. None of...
2. a) State and describe any three factors that may affect positively or negatively the analytical utility of molecular fluorescence techniques? b) Why does the fluorescence excitation spectrum appear to be a mirror image of fluorescence emission spectrum? Why are they not exact mirror images? c) What does synchronous fluorescence spectroscopy involve? What kind of spectra is obtainable using this technique? Are there any advantages of using synchronous spectrometry in fluorescence techniques?
14. For a negatively skewed distribution with a mode of X-25 and a median of 20, the mean is probably a greater than 25 b. less than 20 c. between 20 and 25 d. cannot be determined from the information given 15. A distribution is positively skewed. Which of the most probable order for the three measures of central tendency? a mean - 40, median - 50, mode - 60 b. mean-60, median - 50, mode - 40 c. mean...
Consider the approximately normal population of heights of male college students with mean μ = 66 inches and standard deviation of σ = 4 inches. A random sample of 25 heights is obtained. (a) Describe the distribution of x, height of male college students. -skewed right -approximately normal -skewed left -chi-square (b) Find the proportion of male college students whose height is greater than 74 inches. (Give your answer correct to four decimal places.) (c) Describe the distribution of x,...
My hotes Asa Your consider the approximately normal population of heights of male college students with mean"-68 inches and standard deviation of σ-43 inches. A random u ple obtained igts (a) Describe the distribution of x, height of male college students skewed right approximately normal skewed lef chi-square b) Find the proportion of male college students whose height is greater than 69 inches. (Give yeur answer correct to four decimal places) (c) Describe the distribution of x, the mean of...
Multiple Choice Questions (Select the best answer) 1. Which of the following is true? a) Ds=Ps = Qs b) Dso = Ps = Q25 c) Ds=Pso = Q2 d) Dso = Ps = Q2 Answer 2. On an easy test, the mean test score is greater than median test score. The distribution of the test scores is likely to be a) Symmetric b) Negatively skewed c) Positively skewed d) Normal Answer= 3. Normal rule states that the approximate percentage of...