the working life time, in years, of a oven is normally distributed with mean 9 and variance 2.25. Use new Cambridge statistical tables, find the 30th percentile of the working lifetime, in years.

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A: Given that, Mean, mu= 11.4 Standard deviation, sigma= 2.7 We know that,  Z score= (X- my)/sigma

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Q: If the variance of the Electrical Engineering board examination result is 36, what is the minimum…

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Q: 3. What are the symbols used to represent the population variance and standard deviation?

A: It is an important fact in statistics . It has got wide applications in all statistical procedures .

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

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Q: Find the mean, standard deviation, skewness, kurtosis of the blood sugar

A: Given data is:

Q: If the variance of a national accounting examination is 828, how large a sample is needed to…

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Q: Consider a sample with data values of 27, 25, 20, 18, 30, 35, 29, and 25. Compute the range,…

A: Calculate Quartile deviation from the following data27,25,20,18,30,35,29,25

Q: Find the range, the standard deviation, and the variance for the given samples. Round non-integer…

A: Given The given sample is 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6. Apply formula Range =Highest value…

Q: What is the standard deviation? How does it affect the necessary sample size?

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Q: The result of a nationwide aptitude test in mathematics are normally distributed with mean =63 and…

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Q: The range of possible values for the Durbin-Watson statistic is

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A: It is given the mean and standard deviation of males are 100 and 30.

Q: The second quartile is also known as a. Mean b. Standard Deviation c. Median d. Mode

A:

Q: please explain how to use the standard deviation from the 1-Var Stats statistical output to obtain…

A: Hint:  Standard devation =Variance

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Q: In the case of research data analysis which one is the best? SD (standard deviation)  or ANOVA?

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Q: what happens to the F-statistic if two variances are different?

A: The two variances are different hence the F-statistic are as follows,

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Q: A mean is known as a statistic if it is computed from the: Opopulation. parameter. sample.

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Q: Find the variance of the probabilty distribution for the histogram

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Q: Consider a sample with data values of 27, 25,20,15,30,34,28, and 25. Compute the range,…

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Q: A SAMPLE SIZE OF 36 WAS DRAWN AND ITS MEAN WAS FOUND TO BE 80. TEST WHETHER THIS SAMPLE COULD HAVE…

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Q: If the variance of a national accounting examination is 900, how large a sample is needed to…

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Q: Compared to an independent-measures design, a re contribution of variance due to O time-related…

A: Repeated measures design is known as a design that includes numerous measures of a similar variable…

Q: What does it mean that the variance (computed by dividing by N) is a biased statistic?

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Q: the ____ focuses only on the middle 50 percent of the cases in a distribution.  -interquartile…

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Q: The most commonly encountered/used measure of vairablity is the ? Standard deviation Mean Mode…

A: The most commonly  used measure of variability from given options are  Standard deviation Mean  Mode…

Q: The standard deviation of a sample of 100 observations equals 64. The variance of the variance…

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Q: Compute the range and sample standard deviation of flight time.

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Q: According to a study, BMI among men aged 16-61 in the world follows a Normal distribution with mean…

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Q: t-statistic,

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Q: What is the effect of an increase in variance of the different scores in repeated measure design

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Q: Does the age of the Covid-19 infections follow a normal distribution? Why or why not?

A: NO, age of covid-19 infections  does not follow normal distribution.

Q: Give one method to increase statistical power and Which test statistic should you use if you are…

A: Given problem Given that   Method to increase the statistical power : a) Increase the sample size…

Q: Suppose you receive the following ANOVA output in this study. What is the correct conclusion about…

A: From the given ANOVA output, the F statistic value is F(2,27) = 4.47 and the Sig. value (p-value) is…

Q: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the range,…

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Q: a population with a known mean but an unknown variance.

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Q: If a data set has 16 values and a standard deviation 9.4, then the variance is

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Q: Compute the mean and standard deviation of the time spent for studying and current CGPA for male…

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