PROBABILITY DISTRIBUTION OF A RANDOM VARIABLE 15 17 18 19 20 21 22 23 24 P(X) 34 1 6. 69 1 34 34 34 34 34 34 34 34 LOWEST TERM: 15 17 18 19 20 21 22 23 24 3. 34 34 17 17 34 34 17 34 34 DECIMAL FORM: 15 17 18 19 20 21 22 23 24 PX) 0.03 0.09 0.18 0.18 0.15 0.26 0.6 0.03 0.03

Q: Help with 4

A: Given points are in an non- linear line. The given points denote as variable sample size chart of x-…

Q: Suppose X ~ N (-2,3). Between what c values does 99.73% of the data lie?

A: The mean is -2 and the standard deviation is 3.

Q: by

A: Let X be the random variable such that the scores in the Statistics exam. The average score was 80…

Q: Many high school students take either the SAT or the ACT. However, some students take both. Data…

A: For ACT:n = 100 = 20 = 5For SAT:n = 100 = 920 = 170Also, the correlation coefficient between SAT and…

Q: 5.

A: Given:

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A: From the provided information, Mean of the data set (µ) = 40 Standard deviation (σ) = 8 Using…

Q: whats negative skew?

A:

Q: 0.72. Suppose that we randomly pick 25 daytime statistics students. In words, define the

A: Given that,The variable X has an exponential distribution with a mean is 0.72.No. of students To…

Q: Explain how standard deviation is calculated and how does it play an important role to determining…

A:

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: The test to be carried out will be- H0:μ is 132 H1:μ is less than 132 Type-II error occurs when the…

Q: Describe about the Error Variability?

A: The element of variability is produced by factors, such as measurement imprecision, and is not…

Q: Adam just graded his exams. the mean score is 74, the median is 76.5, the range is 65 and the…

A: given data  mean = 74 median = 76.5 range = 65 standard deviation = 11 add 7 points to each score…

Q: What are the null hypothesis (H,) and the alternative hypothesis (H,) that should be used for the…

A: Claim is that the mean systolic blood pressure of CEOs of major corporation is less than 134 mm Hg.…

Q: Why is the sum of the sum of six deviations -2, -1, -1, -1, 0, 5 when added =0?

A: Solution:It is one of the property of sample mean that the sum of deviations above average and the…

Q: How to find the variance, explain the formula

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: Briefly explain what is measured by the standard error of estimate

A: Given that what is measured by the standard error of estimate.

Q: Rof 15 > Calculate the standard deviation of the following set of numbers. Use the formula for the…

A: Given X1=11 X2=14 X2=8

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A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: The line of best fit through a set of data is y=29.267+0.881x According to this equation, what is…

A: See the handwritten solution

Q: 4. Find combined mean from the following data ¯¯¯X₁ = 210 n₁=50 X₂ = 150 n₂ =100

A:

Q: Grade 6 and Grade 8 students were asked how long it takes them to get to school in the morning. The…

A: The measure of the centre is calculated using the observations such as mean, median and mode. The…

Q: Please Find the mean and variance of Binomial variable X having p=0.09 and n=2.

A:

Q: The variance is sometimes a negative number.

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Q: Edit question fast please. The lengths of Atlantic Croaker Fish are normally distributed with mean…

A: Here's mean is 10 and standard deviation is 2. We will use z-standard normal distribution.

Q: What are the null hypothesis (H) and the alternative hypothesis (H,) that should be used for the…

A: Given Population Mean, μ=136 Sample Mean, x=130 Sample sd, s=15

Q: e, negative, or no correlation. 3.

A: A positive correlation is a relationship between two variables in which both variables move in the…

Q: A data set has a mean of 40 and standard deviation of 8. -2 standard deviation =  -1 standard…

A: It is given that the mean is 40 and the standard deviation is 8.

Q: please show the work for the problems with an explanation versus just shwoing calculated data.

A: To check the relationship b/w age and miles on the car.

Q: Write Two Quantitative Paragraphs about Statistics!

A: Statistics is a field which involves collection, arrangement and analysis of the data to draw…

Q: Explain the variance of the sum or difference of the two variables X and Y ?

A: Variance of sum of two variables: The variance of the sum of two or more random variable is equal to…

Q: The follovwing are tne bur times of chemical fiares of tw o ditfereht formulations. The design oT…

A: We will use F-Test for testing the following hypothesis H0 : σ12=σ22against H1 : σ12≠ σ22 σi2=…

Q: 2. A company makes parts for a machine. The length of the parts must be within certain limits or…

A:

Q: The first sample the mean =12 The variance = 16 %3D n1=10 The second sample E1xifi = 280, %3D > xf;…

A: Standard deviation of combined series: SD=n1s12+n2s22n1+n2+n1*n2(x1-x2)2(n1-n2)2 i) Using Excel,