A key characteristic of the chi-square distribution is it   is always skewed   is used with only nominal scale data   it is a based on left tail tests   depends directly on the degrees of freedom

Q: Histograms of random sample data are often used as an indication of the shape of the underlying…

A: (a) From the picture given:   Smallest Value Largest Value Histogram (i) 9.5 14 Histogram…

Q: Siven are five observations for two variábles, a and y. 3 5 13 16 18 Yi 57 60 50 14 13 Use the…

A: Solution: Given information: The estimated regression equation is  y^= 73.0978-3.1180x n= 5…

Q: The 20th percentile is the same as the 30th Range is the least reliable measures of variability. The…

A:

Q: Explain when the empirical rule can be used to help describe data in a population or sample,…

A: The empirical rule for a normally distributed random variable is as follows: Approximately 68% of…

Q: The distribution of data where tha mean, median, and mode are approximately equal and where the data…

A: Need to find the distribution of data where the mean, median, and mode are approximately equal and…

Q: To determine if a training program has improved the average performance of trainees data are…

A: It is an important part of statistics . It is widely used .

Q: Test the claim about the population variance of at the level of significance a. Assume the…

A: The question is about hypo. testing  Given : sample stat : sample var. ( s2 ) = 36.7 Sample size ( n…

Q: Hi I need help answering these questions for normal distribution, thank you.

A: The normal distribution:A continuous random variable X is said to follow normal distribution with…

Q: median and IQR

A: IQR is the Interquartile range it is also called midspread or it denoted the middle 50% of the…

Q: Differentiate the different distributions 1. Normal 2. t-distribution

A:

Q: Paramesan cheese is aged for an average of 24 months to allow it to develop the desire richness in…

A: Given data,μ=24σ=3.7P(X<19)=?

Q: Histograms of random sample data are often used as an indication of the shape of the underlying…

A: Given histogram

Q: Paramesan cheese is aged for an average of 24 months to allow it to develop the desire richness in…

A:

Q: A parametrical statistical test is one that makes assumptions about the parameters that define the…

A: here use basic definition of parametric statistical test  parametric test evaluate hypothesis test…

Q: Mercury in tuna Is there a difference in the mercury concentration of light tuna and albacore tuna?…

A: Please find the explanation below. Thank you.

Q: Activ stical Directions: Using the following data, moadify the tabular representation by following…

A: Relative frequency is calculated by rf = frequency/total frequency = frequency/400 for each student…

Q: Paramesan cheese is aged for an average of 24 months to allow it to develop the desire richness in…

A:

Q: Lockheed Martin, the defense contractor designs and build communication satellite systems to be used…

A: It is given that the mean is 15 and the standard deviation is 2.25.

Q: The right statistical test to use when testing for the mean of two dependent populations is the…

A: We have to find out the statement is true or false..

Q: Give an example of a small set of dara for ehich the mean is larger than the third quartile

A:

Q: Give three real-world example of an empirical distribution of data.

A: Empirical distribution :  It is related to observed frequency ( It is frequency distribution of…

Q: When do we use a mean and SD to define a continuous variable distribution?

A: Given information: For a continuous variable distribution with specified mean and standard…

Q: The choice of classes in a histogram can change how the distribution appears has no impact on the…

A: A histogram is a graphical representation of quantitative data used to classify data into grouped…

Q: The varlance is a measure of dispersion or variability of a random varlable. It is a weighted…

A: Variance is defined as mean of squares of deviations taken from mean. Denoted as σ2 Formula to…

Q: Researchers were interested in assessing whether stress levels are different at the beginning of the…

A:

Q: Use a T-test of the data given in the picture, compare it with a P value(one tailed) and do a…

A: The three pairs Male and Female, Male and Male and injected male and male, and objective is to apply…

Q: What is the test statistic (Z)?

A: You are part of a trivia team and have tracked your team's performance since you started playing, so…

Q: What is left skewed distribution

A: Here we have to define What is left skewed distribution.

Q: Kurtosis describes the peakness of the curve on the median mean mode

A: It is given that the statement about to the kurtosis of the curve. Here, need to find out the…

Q: A survey is conducted to explore tassews in explome o to panicule, this i phones, their view the…

A: Mean 180 Standard Error 7.37 Median 174 Mode NA Standard Deviation 90.24217 Sample…

Q: The F-statistic is a ratio score resulting in a measure of the estimated proportion of variance due…

A: The F-statistic is a ratio score resulting in a measure of the estimated proportion of variance due…

Q: Top quality 15% of the production is good quality, the worst 15% is bad quality, the rest are medium…

A: Top quality 15% of the production is good quality, the worst 15% is bad quality, the rest 70% are…