2. To test whether memory changes with age, a researcher conducts an experiment in which there are four groups of six subjects each The groups differ according to the age of subjects. Each subject is shown a series of nonsense syllables. The subject is then asked to free recall the syllables. The number of syllables remembered by each subject is shown below. 60 years old 13 10 7 50 years old 17 40 years old 12 15 16 30 years old 14 13 14 15 14 17 11 9. 8 12 12 13 6. 10 18 15 9.

Q: How many 3-digit number can be formed from the digits 0,1,2,3  a. if no two digits are to be the sam...

A: * SOLUTION :-  from the given information the calculation is given below    

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A: The data of two groups A and B's diastolic blood pressure readings are given as: Group A Group B ...

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Q: The probability that a contractor will get a plumbing contract, is 2/3 and the probability that he w...

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Q: 13) A box contains 5 green, 7 yellow, and 10 orange ping pong balls. How many ways can 5 balls be se...

A: Given,no.of green balls=5no.of yellow balls=7no.of orange balls=10Total no.of balls=22

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A: The hypothesis is said to be directional, if the direction of the hypothesis is less than or greater...

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A:

Q: Use this information to answer #19 - #23: A sample of 10 Psychology students at UNCP students were a...

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Q: A. The scores of students in the midyear examination for Mathematics has a mean of 32 and a standard...

A: Given that Mean = 32, SD = 5 Find the Z-scores for 1. x = 37 2. x = 22 3. x = 33 4. x = 28 5. x = 30

Q: Describe the shape, center, and spread of this distribution.

A: The Mean is  Mean =∑i=1nxin=56.0216=3.5012   The median is  Median=value of (n2) observation +value ...

Q: According to a study, 80 % of adult smokers started smoking before 21 years old. 6 smokers 21 years ...

A: Given,n=6p=0.8q=1-pq=1-0.8=0.2A random variable X~Binomial(n=6 , p=0.8)P(X=x)=6x0.8x0.26-x  ;  x=0,1...

Q: 2. A product is made by 3 machines, B1, B2, and B3 with 30%, 45% & 25%, respectively. The machines p...

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Q: Problem 2: You are interested in how uniform the lengths of socks are that are produced at a factory...

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Q: Theorem 5.6 (d) Distribution of the Quotient of Two Random Variables. If X and Y are independent con...

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Q: a. What is the probability that the lifetime X of the first component exceeds 3? b. What are the ma...

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Q: Giving a test to a group of students, the grades and gender are summarized below A В Total Male 15 4...

A: According to the given information, we have   A B C Total Male 15 4 11 30 Female 5 10 16 31 ...

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Q: In a group of 800 students, the number of married is 320. But of 240 students who failed, 96 belonge...

A: In a group of 800 students, the number of married is 320. But of 240 students who failed, 96 belonge...

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A: @solution:::

Q: The inner diameters of washers produced by a company can be measured to the nearest thousandth of an...

A: The class marks of a frequency distribution is the mid value of the classes.

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Q: The following is data representing the rushing yards gained by San Diego Chargers Football Players i...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: calculate all of the measures of variation that are appropriate.

A: Here measures of variation  IQR  Range  Variance  Standard deviation 

Q: the following scores are from an interval measurement : 10, 20, 5, 15, 25 Please calculate all the ...

A: Solution-: Given: 10,20,5,15,25 We prepare the following table: From this table we get,  n=5,∑xi=75,...

Q: a) A Continuous distribution of a variable x in the range (-3,3) is defined as (3+ x)²;-3<x< -1 TRAS...

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Q: Calculate the median and mode (by grouping method) from the following data: Central size : 15 25 35 ...

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Q: My internal width is 8, how can i solve for the class intervals? and please do solve this problem wi...

A: Number of times a variate value is repeated is called its frequency. The number of observations corr...

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A: Since Chebyshev's theorem is to be used to find the nicotine content within certain standard deviati...

Q: Theorem 5.4. Let X be a continuous r.v. with p.d.f. fx(x). Let y = g(x) be strictly monotonic (incre...

A:

Q: Given the class interval 78.49 – 85.72, the class mark is _____ , the class size is ______ and the c...

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Q: The height of the rose plants in a garden is Normally distributed with a mean 100cms. Given that 10%...

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Q: 1) Estimate the population mean of the number of customers entering the restaurant each day.

A: Here use formula of Mean, variance, median  And here ascending order of data  18,19,20,25,31,42

Q: A corporation must appoint a​ president, chief executive officer​ (CEO), chief operating officer​ (C...

A: Given,Total members=11

Q: Use this information to answer #19 - #23: A sample of 10 Psychology students at UNCP students were a...

A: Solution: The sample of observations are  0, 1, 0, 1, 2, 3, 5, 4, 0, 6 n= 10 observarion  The lowest...

Q: Suppose you take a sample of 25 Reese’s pieces. The proportion of orange is 0.4. What is the p-value...

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Q: Čalcium level (kg/plot) Plot Preburn Postburn 50 9 50 18 82 45 64 18 82 18 73 9. 77 32 54 9 23 18 10...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

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A: Given Information: Weekly Gross revenue Television advertising Newspaper Advertising 101.3 5.0 ...

Q: On a dry surface, the braking distance of a fully loaded tractor trailer is 370 ft with a standard d...

A: We have given that.   X~N( μ , ?^2 )   μ=370 , ? =40   Z-score =( x - μ )/?

Q: A random variable X has the probability density function is given by (ke 2xx20 S(x) = (0,x<0 (1) fin...

A:

Q: For a large sporting event the broadcasters sold 66 ad slots for a total revenue of $160 million. Wh...

A: According to the given information, we have Given that for a large sporting event the broadcasters s...

Q: Giving a test to a group of students, the grades and gender are summarized below A В Total Male 16 1...

A: Given information- We have given a test to a group of students, the grades and gender are summarized...

Q: Assume ZZ follows the standard Normal distribution, and suppose P(Zz∗)=0.02P(Zz∗)=0.02. Use 2 decima...

A:

Q: Use this information to answer #19 - #23: A sample of 10 Psychology students at UNCP students were a...

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Q: Determine if events A and B are mutually exclusive. 3 P(A) = P(B) = 10 7 3 P(A) 10 3 9. P(A or B) 5 ...

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Q: Theorem 5-5. The joint p.d.f. guv (u, v) of the transformed variables U and V is: 8uv (u, v) = fxy (...

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Q: For a standard normal distribution (mean=0, standard deviation=1) Find: P(z < 1.29) Enter at least 4...

A: According to the given information, we have Z score = 1.29 Left tailed

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Q: Researchers constructed a confidence interval for the mean body temperature of healthy US adults, us...

A: Definition of confidence interval: Were this procedure to be repeated on numerous samples, the propo...