What is the standard deviation of this probability distribution

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A: Farmula used  V(Y)=E(Y2)-[E(Y)]2  

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A: Given:  The sample space for an experiment contains 4 outcomes (1,2,3,4) with probabilities shown be...

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Q: The United States is spread across a large number of time zones. In fact, the time zones not only b...

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Q: determine the type of sampling

A: Here using definition of sampling method answer this question 

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Q: EVALUATE THE FOLLOWING: (combination)  C(5,4)  P(5,5) / C(5,5)

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Q: In a single throw of two dice, what is the probability of getting the same numbers on both dice?

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A: Given statement If a sample is an extreme result and is significant, it will fall in the critical re...

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Q: Consider a Morhne chain on tates: O1,2,3,45.with the fellowing t molohility motrix . trensition 0.4....

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Q: Here are the scores on the scores on the first exam in an introductory statistics course for 1o stud...

A: Data 80,73,92,85,75,98,93,55,80,90  Note: According to Bartleby guidelines expert solve only one que...

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Q: a. What does ez dx represent in words? b. Find e dx. c. Graph the function.

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Q: Example 2-15. Eight coins were tossed together and the number of heads resulting was noted. The oper...

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Q: Consider the following joint distribution of X and Y X\Y -4 2 7 Sum 1/8 1/4 1/4 1/8 1/8 5 1/8 1/2 Su...

A: Disclaimer : “Since you have posted a question with multiple sub-parts, we will solve first three su...

Q: In two towns A and B, the following information was supplied by an investigator: Total population (i...

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Q: Gigi has a landline phone number 6-521-7271. How many distinguishable permutations does his number h...

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Q: In a study investigating the effect of car speed on accident severity, the vehicle speed at impact w...

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Q: You generate a scatter plot using Excel. You then have Excel plot the trend line and report the equa...

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Q: What is your favorite color? A large survey of countries, including the United States, China, Russia...

A: Given that : P = 24%  i.e.  0.24 Sample size (n) = 57 r = 7  P0 = r / n Now  by using one sample pro...

Q: Before an increase in excise duty on tea, 400 people out of a sample of 500 persons were found to be...

A: Solution: Given information: n1= 500  Sample size of people before increase in excise dutyn2=600 Sam...

Q: A box has 12 balls, 4 are red and 8 are green.  Randomly choose 3 balls from the box without replace...

A: We have given that,  Total balls = 12  Red balls = 4  Green balls = 8  Then,  We will find the proba...

Q: Q - 16 From the following data compute Bowley's coefficient of skewness and interpret your result. I...

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Q: Find the percentage of male and female employees.

A:  The average salary of male employees in a firm was $520 and salary of female was $420. The mean sal...

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Q: 3.7 Make a stemplot. Here are the scores on the first exam in an introductory statistics course for ...

A: Stem plot  given   

Q: A department store reports that 30% of its customer transactions are in cash, 20% are by check, and ...

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Q: Use critical thinking to list at least three things wrong with this survey. Explain fully using comp...

A: Given information: The results of online survey are given.

Q: Healty people have body temperatures that are normally distributed with a mean of 98.20°F and a stan...

A: Mean=μ=98.20, σ=standard=0.62   

Q: Find the standard deviation of the reaction times. 0.7

A: Let X denote the reaction times of a drug. We have to calculate the SD of sample of size n = 12

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that...

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Q: Two letters are chosen, without replacement, at random from the English alphabet. If y is considered...

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Q: Problem 3 Let X be a continuous random variable with PDF S 4z³ fx(x) = { 0 0 ).

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Q: Boy has two bags of plums. Each bag has 10 plums but: In Bag 1 there is 7 ripe and 3 raw plums In Ba...

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Q: An urn has 7 balls that are identical except that 4 are white and 3 are red. A sample of 5 is select...

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Q: Using a 5% level of significance and a sample size of 24, what is the critical t-value for a null hy...

A: Given: Using a 5% level of significance and a sample size of 24, what is the critical t-value for a ...

Q: In the Super-Mega lottery there are 50 numbers (1 to 50), a player chooses ten different numbers and...

A: Formula : Test statistic :  

Q: MLE is the maximum likelihood estimation

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Q: If a product is comprised of 50 independent parts with each having 3 sigma quality performance (with...

A: Here given parts have 3 sigma qualification Means that probability of meet specifications is 0.9973

Q: n a final examination in mathematics, the mean was 72 and the standard deviation was 15. Determine t...

A: Given : On the final examination in Mathematics ; Mean (μ) = 72 Standard deviation (σ) = 15 Let X be...

Q: Imagine that the mean height for players in all Division I women's basketball programs is 69 inches ...

A: We use formula  Test statistic ( Z ) = ( x̄ - μ )∕?/√n Mean = 71.2 Population standard deviation =3 ...

Q: show that ∑Xi is a sufficient statistic for l.

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Q: A permanent disability model has three states: State 0 (Healthy), State 1 (Sick), and State 2 (Dead)...

A: From the given information, A permanent disability model has three states: State 0 (Healthy), State ...