0
What else can I help you with?
What are two characteristics of semen that enhance the probability of fertilization?
The first is the concentration of sperm cells in semen - the higher the concentration better the possibility of conception. The second is the percentage of normal sperm cells - the lesser the number of abnormal sperm cells, the better the possibility of conception.
IF two variables that have the same mean and standard deviation have the same distribution?
No, a distribution can have infinitely many moments: the first is the mean, the second variance. Then there are skewness (3), kurtosis (4), hyperskewness (5), hyperflatness (6) and so on.If mk represents the kth moment, thenmk = E[(X - m1)k] where E is the expected value.It is, therefore, perfectly possible for m1 and m2 to be the same but for the distribution to differ at the higher moments.
About the history of gamma distribution?
According to the links, Karl Pearson was first to formally introduce the gamma distribution. However, the symbol gamma for the gamma function, as a part of calculus, originated far earlier, by Legrenge (1752 to 1853). The beta and gamma functions are related. Please review the related links, particularly the second one from Wikipedia.
Concept of Probability sampling and chi square test?
A probability sampling method is any method of sampling that utilizes some form of random selection. See: http://www.socialresearchmethods.net/kb/sampprob.php The simple random sample is an assumption when the chi-square distribution is used as the sampling distribution of the calculated variance (s^2). The second assumption is that the particular variable is normally distributed. It may not be in the sample, but it is assumed that the variable is normally distributed in the population. For a very good discussion of the chi-square test, see: http://en.wikipedia.org/wiki/Pearson%27s_chi-square_test
How many second in a year?
There are 60 seconds in a minute, and 60 minutes in an hour, so there are 60^2 = 3600s in an hour. There are 24 hours in a day, so there are 3600*24 = 86,400 seconds in a day. There are 365 days in a normal year, so there are 86,400*365 = 31,536,000 seconds in a year. There are 366 days in a leap year, so there are 31,622,400 seconds in a leap year. Scientifically seen, there are c. 365.25 days in a year, so in an actual year (scientifically seen) there are 31,557,600 seconds in a year.
What percentage of scores fall below 7 if the nmean is 8 and standard deviation 2?
Assuming a normal distribution, the proportion falling between the mean (of 8) and 7 with standard deviation 2 is: z = (7 - 8) / 2 = -0.5 → 0.1915 (from normal distribution tables) → less than 7 is 0.5 - 0.1915 = 0.3085 = 0.3085 x 100 % = 30.85 % (Note: the 0.5 in the second sum is because half (0.5) of a normal distribution is less than the mean, not because 7 is half a standard deviation away from the mean, and the tables give the proportion of the normal distribution between the mean and the number of standard deviations from the mean.)
What is the sketch for a normal distribution?
The normal distribution is a bell shaped curve. Properly normalized, the area under the curve is 1.0. Start by drawing axes. The Y axis is probability, peaking at 0.4, crossing the X axis at the mean, and the X axis is standard deviation. Draw points (-3, 0.01), (-2, 0.05), (-1, 0.25), (0, 0.4), (+1, 0.25), (+2, 0.05), (+3, 0.01). These are all approximations. Connect the dots, understanding that the curve is asymptotic to the X axis.For a better picture, as well as an explanation, please see the related link below. This picture also shows you the percentage each area, grouped by standard deviation, or sigma, is. The normal distribution is the second picture on the right. Scroll up to see the picture, call "Normal Distribution".
What is the second step in making an income distribution table?
The second step in making an income distribution table is to rank individuals or households from lowest to highest income. This step helps organize the data and prepare for further analysis of income distribution in the population.
What percentage of Americans have second mortgages on their homes?
It is difficult to determine the percentage of Americans who have second mortgages on their homes as this number is constantly changing. Many Americans have taken out second mortgages.
What are different normal forms?
There are 4 normal forms in databases. First normal form, second, third and fourth normal forms are there.
Second cousin relationship?
its normal
What are 5 questions you could ask a student about probability distribution?
The answer depends on the level at which the student is expected to be. A 15-year old should know the probability of getting heads on the toss of a coin but even a mathematics graduate - who did not specialise in probability - would be expected to be able to prove the mathematical relationship between the Normal distribution and the F-distribution. If asked, most student would not even know what the second part of the sentence meant.
What are the differences between the first normal form and the second normal form?
weewwqew
What is 5.75 as a percentage?
A percentage is a form of ratio. A ratio requires two numbers. Unless you have the second number, a percentage cannot be determined.
A ratio whose second term is 100?
A percentage.
What percentage of one second is 43 milliseconds?
4.3%
When was The Second High School Attached to Beijing Normal University created?
The Second High School Attached to Beijing Normal University was created in 1953.
