Calculate the arithmetic mean from the following Cata : Value Frequency 0-4 328 5-9 350 10-19 720 20-29 664 30-39 598 40-49 524 50-59 378 60-69 244

Q: Construct the Probability Distribution

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A: Given: P(t) = 3.5t2 − 14t + 120 

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Q: Which of the below is example of a cohort study? A study on Brunel university students to c...

A: In a cohort study, the groups are matched in terms of many other variables such as economic status a...

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A: Here, we have to choose correct statement.

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A: Chi -square test : A chi-square test is a statistical test that is used to compare observed and expe...

Q: 12 Question 1 As sample size gets large enough (n > 30) sampling distribution becomes 1. almost norm...

A: We know that  Sample size n > 30 then what distribution we use.

Q: researchers were interested in the mean number of words recalled from short term memory differs bas...

A:        

Q: 2. Consider the ARMA(1,1) model, (1 – 0.5B)Y = (1– 0.8B)a,. (a) Verify whether it is stationary, or ...

A: We are given the following ARMA(1,1) model as follows: (1-0.5B)Yt = (1-0.8B)at We need to check the ...

Q: How many possible of size n=3 can be drawn from a population of size 12? O a 1728 O b, 220 O c. 36 O...

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Q: 1. We use F - distribution to test the equality of several population means. 2.  In ANOVA; if we te...

A: INTRODUCTION:  F distribution:  The Test statistic used in the testing of the hypothesis using F dis...

Q: identify the sampling technique used

A: 1.Here researchers are selected using the randomly selected chits of numbers assigning to them from ...

Q: A company claims that the mean monthly residential electricity consumption in a certain region is mo...

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Q: A company claims that the mean monthly residential electricity consumption in a certain region is mo...

A: The standard z test statistic could be used, if you are interested to compare the sample mean with t...

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Q: Find the mean deviation about mean of rectangular distrihution

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Q: When marketing a new product, a company conducts a taste survey. A recent survey of 244 respondents ...

A: Let X be the random variable from binomial distribution with probability (p) = 72.66 = 0.7266 and sa...

Q: The average waist size for teenage males is 27.1 inches with a standard deviation of 2.34 inches. If...

A: We have given that.   X~N( μ , ?^2 )   μ = 27.1 , ? = 2.34  , x=26.2   Z-score =( x - μ)/?

Q: For Questions 1 and 2. Describe a method for using a table of random digits to obtain the rand sampl...

A: (1) Five people from a group of 30.  

Q: Find the cumulant generating function of gamma distribution and obtain various cumulants.

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Q: How do you solve for the mean of the sampling distribution of sample means?

A: Solution-: We find how to solve for the mean of the sampling distribution of sample means? 

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A: Let X denotes the waist of policemen in a certain regional office. Given that X follows N(mean = 35,...

Q: 3. The weight of a regular bag of new powdered milk are normally distributed with mean 500 grams and...

A: We have given that.   X~N( μ , ?^2 )   μ =500, ? =?   Z-score =( x - μ )/?

Q: Test the hypothesis that mean is less than 1500. Use the 1% level of significance. Would your conlcu...

A: Given: Score, X 1561 1554 1536 1531 1523 1518 1515 1511 1506 1500 1499 1...

Q: Researchers were interested in whether the mean number of words recalled from short term memory dif...

A: In order to determine whether the mean number of words recalled from short term memory differ based ...

Q: Which attribute is a qualitative nominal: 1 Time 2 Temperature 3 Sex

A: From the given options which is a qualitative nominal ?  

Q: Calculate the coefficient of correlation for the ages of husband and wife : Age of husband Age of wi...

A: Given: Age of husband x Age of wife y 23 18 27 22 28 23 29 24 30 25 31 26 33 28 ...

Q: Given: A finite population of numbers has a size N = 4. The population consists of values 12, 14,16 ...

A: Since question 2 is highlighted, we will answer only that question for you.  

Q: What is the probability that the gun detects speeding and the driver was speeding? (Round your answe...

A: HERE FROM GIVEN INFORMATION  define event driver actually speedy = S driver not speedy = S'   gun de...

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Q: Accident data were analyzed to determine the numbers of fatal accidents for automobiles of three siz...

A: Given:   Small medium large Fatal 67 26 16 Non Fatal 128 63 46  

Q: 1 dx +x, Vx

A:

Q: Amy is a contestant on a singing reality tv show. Every week, the public votes for the contestant wh...

A: We have given that  Sample size n =5716 Favorable cases x =3735 Sample proportion p^=x/n  =3735/5716...

Q: ADDITION COUNTING PRING 8. You must choose an elective for your fourth block class. You can choose f...

A: Given : No. of different physical education classes = 3 No. of different computer classes = 4 No. of...

Q: 17 Question A sample consists of four observations: {1, 3, 5, 7}. What is the standard deviation? 1....

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Q: Commodity A Соmmodity B Commodity C Year Price Rs. Quantity Kg. Quantity Kg. Price Rs. Price Rs. Оиa...

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Q: You may need to use the appropriate appendix table or technology to answer this question. Given are ...

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Q: Find: (a) A' UB' (b) A' NB' (c) (A UB)'

A: It is given that The sets are defined as U = {1,2,3,4,5,6,7,8,9,10}, A = {1,2,4,6,8,10}, B = {1,3,5,...

Q: Find the area: Find the area under the standard normal curve. Round your answers to four decimal pla...

A: We have to find given area using standard tables.

Q: 7. A pumping station operator observes that the demand for water at a certain hour of the day can be...

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Q: the Z table provided, find the value of ?. P[

A: If we have z table than we can get easily the probability of z value There are three steps. 

Q: Question 4: Consider the following “modified" prisoners' dilemma: Defect Nuclear Соорerate 4, 4 Соор...

A: Given data indicates the modified prisoner's dilemma case with an added nuclear option to the strate...

Q: Read the given statement. Identify if the statements are True or False

A: Here use definition of ordinal  variable definition