The proportion of a in the tail of a gold distribution can be never be more than .50 true or false

Q: your score in the original distribution?

A: Since , the original distribution has a mean 35 and standard deviation is 8 Also , the new…

Q: The sum of all the relative frequencies of a distribution is ________

A: Relative frequency: The relative frequency is obtained as:  relative frequency = class…

Q: In a frequency distribution the coefficient of skewness based upon the quartile is 0.6. If the sum…

A: Skewness is used to measure the shape of the distribution. There are three types of skewness, they…

Q: The mean can be thought of as the balancing point of a distribution. According to this description,…

A: Mean          A mean is the simple mathematical average of a set of two or more numbers. The mean…

Q: The average retirement age in America is 65 years old. Do small business owners retire at an older…

A: c For the given sample values, x¯=68.0625, from the excel function, =AVERAGE(F1:F16)s=5.9830, from…

Q: Which of the four sets of data represents a normal distribution? O (1, 2, 3, 3, 3, 2, 1) {-10, -8,…

A: We have given that the four sets of data. Here we need to find out that which one showing the normal…

Q: The first three moments of a distribution about the value 2 are 1, 16 and-40 show that the mean is…

A:

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A:

Q: When data is normally distributed the mean equals the median True False

A: Normal distribution

Q: The mean of a distribution is 23, the median is 24 and the mode is 25.5. It is most likely that this…

A:

Q: Which of the four sets of data represents a normal distribution? O { 10, 12, 13, 13, 13, 14, 16} O…

A:

Q: 4. If you subtracted the mean from each score in a distribution and added the results, the sum would…

A: Hey, since there are multiple questions posted, we will answer the first question. If you want any…

Q: When data is normally distributed the mean equals the mode. True

A: Normal distribution

Q: Based on this graph what was the approximate distribution of the averages?  X~___(___,___)

A: Central limit theorem (CLT): According to CLT, for a given sufficiently large sample size from a…

Q: The mean is cosidered to be the "balance point" for a distribution becuase exactly half of the…

A: The mean is considered to be the "balance point" for a distribution because exactly half of the…

Q: Robyn Banks is an investor who acquired 100 shares of a company in year one at $10 and 50 shares of…

A: If the observations have unequal weightage then their mean value can be calculated by dividing the…

Q: In a frequency distribution, the co-efficient of skewness based on quartiles is 0.5. If the sum of…

A: In a frequency distribution, the co-efficient of skewness based on quartiles is 0.5. If the sum of…

Q: Find the proportion of Normally distributed observations with a z-score below 2.56. Give your answer…

A: Given Z=2.56

Q: (c) without assuming anything about the distribution of times, what can be said about the percentage…

A:

Q: What is the mean of the geometric distribution given by

A: It is given that, X is a geometric variate with its pmf, P(x)=3-x = P(x)=(1/3)x ; x=0,1,2,.... We…

Q: Investigate and explain about t- distribution and then provide 2 examples and solve it by using the…

A: A probability distribution for a particular random variable is function of values that maps the…

Q: The mean of a distribution is 291, while the median is 217. Which of these statements is likely to…

A:

Q: Explain the meaning of the specified term. Distribution of a variable

A: Distribution: In general, the distribution of the data set gives the values of the observation and…

Q: Calculate the mean of the distribution. In

A: Here AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION  Here given discrete probability…

Q: Estimate the mean of the distribution.

A: From the given histogram, we are considering the approximate frequency values: Class interval…

Q: In a frequency distribution the coefficient of skewness based on quartiles is 0.6. If the sum of the…

A:

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: In statistics, variance is the average squared distance of each data points from the population…

Q: The number of days travelers purchase their airline tickets ahead of their flights can be modeled by…

A:

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 310…

A: Number of drivers who claim that they always buckle up, x=310. Number of drivers who were surveyed,…

Q: if its 80th percentile is the value 160, what is the value that corresponds to its 20th percentile

A: Given, Mean, μ = 140 80th percentile is the value 160. x = 160

Q: In a normal distribution, what percentage of scores falls below and score of -2.33

A:

Q: In normally distributed data, what percent of the data lies on the interval 2 standard deviations…

A:

Q: A population has a mean of 45 If 6 points are added to each score What is the mean for the…

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Q: If on an average, 6 ships out of 10 arrive safely, find the Mean and the S.D of the number of ships…

A:

Q: A population has µ = 50. Which value of σ would make X = 55 an extreme value out in the tail of the…

A: Given µ = 50 X = 55

Q: Give an example of a distribution that might be  non-normal.

A: Any skewed distribution would be the example of non-normal distribution, for example chi-square, or…

Q: what is the distribution of the coefficient of variation?

A: A coefficient of variance is used to determine the precision of an estimated value. It is primarily…

Q: Briefly, for a normally distributed variable, how do you obtain the percentage of all possible…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: A normally distributed data set has a mean of 0 and the standard divitation of 2. What is the…

A: Given,mean(μ)=0standard deviation(σ)=2

Q: Based on this graph what is the approximate distribution of data?  X~___(___,___)

A: From the data given,we try to create the histogram of the data.

Q: After 5 points are added to every score in a distribution, the mean is calculated and found to be u…

A: After 5 points are added to every score in a distribution, the mean is calculated and found to be µ…

Q: If the mean of a positively skewed distribution is 126, which of these values could be the median of…

A: Ans - Given, the mean of positively  skewed distribution is 126

Q: The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be…

A: Given: Population proportion (p) = 4% = 0.04 Number of loans that will be made (n) = 2400

Q: According to the Distribution of Z table, ______ % of area is above a Z value of 0.82?

A: The normal curve is very helpful to know the area is below, above and between a Z value. If we can…

Q: Find Geometric mean from the following distribution : х%3D4, 5, 6, 7, 8, 9. f= 2, 3, 4, 3, 2, 1.

A:

Q: The mean of the distribution of sample means would be equal to:

A: The mean of the distribution of sample means would be equal to ?

Q: College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal…

A: Follow the procedure given below.

Q: The mean is only slightly less than the distribution is left skewed. which suggests the is within…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…