For a perfectly symmetrical distribution with µ= 30, what is the median?

Q: College students, in general, have a mean of 60 and a standard deviation of 8 on a measure of…

A: Solution-: Let, X= The college students have loneliness scores  Given: We find,

Q: In a negatively skewed distribution, the mean will generally be the median. O a. Less than O b.…

A:

Q: A set of data has a normal distribution with a mean of 100 and a standard deviation of 15. Find the…

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Q: What is the best way to evaluate the normal approximation of the variable?   a. Scatter plot…

A: The objective of the question is to identify the best method to evaluate the normal approximation of…

Q: In a Normal distribution 7% items are under 35 and 89% are under 63. Find its mean and standard…

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

A: Normal distribution

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: Write down the important properties of the Normal Curve.

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

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Q: The graph depicts IQ scores of 102 and 128, normally distributed with mean 100 and standard…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: What are the Properties of the Normal Curve?

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

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Q: When finding the percentage of data in a given section of the normal curve, you are finding the…

A: here use basic of normal distribution

Q: If the quantile-quantile plot of your data versus a normal curve is linear, the data is likely…

A: If all the observations in the quantile plot are very close to the straight line, then it can be…

Q: What describes measurements that have a normal distribution?

A: The farther away you move from the average, the fewer individuals will have those more extreme…

Q: What proportion of the scores in a normal distribution falls below z= -1.32?

A: Let X ~ N(0,1). Then, P(X<-1.32)=P(X>1.32)  [ As X is symmetric about…

Q: A set of data has a normal distribution with a mean of 100 and a standard deviation of 15. Find the…

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Q: The distribution of sample means tends to be a normal distribution. true or false?

A: This question explores the characteristics of the distribution of sample means. Specifically, it…

Q: In a normal distribution, mean is 60 and standard deviation is 5. How many of the cases have scores…

A: The probability between two specific numbers a and b in a normal distribution with mean μ and…

Q: isn't it should use the normal table to find z value?

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Q: Find the mean, the standard deviation and the Z scores corresponding to the minimum and maximum…

A: 2.3, 1.0, 2.1, 6.5, 2.8, 7.8, 1.7, 2.9, 4.4, 5.1, 2.0

Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: The provided information is:

Q: Which of the following does NOT reveal the variation (spread) of the data? Check all that apply.

A: Measures of central tendency: The measures of variability measures the centre of the data. Some of…

Q: ly normal and has a standard deviation of 88% of students scored above a 800. What is the mean of

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: Find the z-score boundaries that divide a normal distribution as described in the following. The…

A: Solution: From the given information, 70% area lies in the middle of the normal distribution and 30%…

Q: If a class has an average of 71  with a SD of 10, use a Normal Curve to estimate the percent of the…

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Q: When a distribution is bell-shaped, approximately what percentage of data values fall within 1…

A: We know that, the empirical rule which is also known as 68-95-99.7 rule.  The Empirical Rule finds…

Q: Two tools commonly used to test how close the dispersion of data matches the distribution shape of a…

A: The normal distribution serves as a fundamental model for the distribution of many natural…

Q: Which of the following histograms could be modeled by a normal distribution?

A: Given ,  The above graph is the right skewed. Therefore it is not the symmetric distribution. Hence…

Q: 3) Draw Q-Q plot of the data set X. Interpret your result related with the normal distribution.

A: 3) Given that, The data on midterm result (X) and final exam result (Y).