reseacher desires to know if the age of a child is related to the number of cavities he or she has.

Q: Calculate mean from the following observations : No. of events : 1 2 3 4 Frequency : 24 20 18 10 2

A:

Q: a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a ...

A: We have given that.   X~N( μ , ?^2 )   μ =67.2 , ? =4.0   Z-score =( x - μ )/?   NOTE:- According to...

Q: 8. The "time consumed on Facebook on a particular day" is what type of variable? A. qualitative C. d...

A:

Q: Q. 6. Calculate Karal Pearsons co-efficient of correlation from the following given data. (i) Sum of...

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Q: (a) Compute the mean and median percentage of hourly employees being laid off at these stores. mean ...

A: Given that  The data are 56 57 45 44 45 57 61 63 58 46 37 39 51 70 66   n=15 Note: According t...

Q: he manufacturer decides to discard all tablets in the bottom 2.5% of Vitamin C content. a production...

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Q: A discrete random variate x follows Poisson law. Find P(X> 2) and P(X is at most 2), if it is given ...

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Q: Calculate weighted arithmatic mean from the following : Monthly Salary : 3700 3000 2200 1500 1050 St...

A: Given that, The formula for calculating the  value of weighted arithmetic mean is,

Q: Sarah is conducting a correlation analysis.  She creates a correlation matrix with 5 variables, usin...

A: We can calculate critical value of correlation coefficient by t-distribution table.  

Q: Q. 6. Calculate Karal Pearsons co-efficient of correlation from the following given data. (i) Sum of...

A:

Q: The sample mean calculated from data on the amount spent by 64 customers for lunch at a major Housto...

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Q: Calculate standard deviation from the following data taking deviations from assumed mean 65: Marks :...

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Q: The working table show the monthly expenditure of 80 students of a university on morning breakfast: ...

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Q: Q. 6. Calculate Karal Pearsons co-effícient of correlation from the following given data. (i) Sum of...

A: Givensum of deviations of x (∑x)=5sum of deviation of y(∑y)=4sum of square of deviation of x(∑x2)=40...

Q: C'. Determine the parameters in the given situations: A car mantufactue advestises that a new car av...

A: Given that  The following statements  We have to find the parameters:   A car manufacturer advertise...

Q: The birthweight of German Shepherd puppies is normally distributed with mean 509.3g and standard dev...

A: Here is given that mean is 509.3 and standard deviation is 96. We use z - scores for finding interqu...

Q: A correlation coefficient of 0.5 does not mean that 50% of the data are explained. Comment.

A: Given that  The correlation coefficient of 0.5 does not mean that 50% of the data are explained 

Q: Q. 6. Calculate quartile deviation and its co-efficient from the dat given below : Age of years : 15...

A: Given that  X Frequency 15 8 30 12 45 16 60 20 75 6 90 3  

Q: Carl is conducting a research study and finds a significant positive correlation between a state's p...

A: It is given that association between state's per capita consumption of mozzarella cheese and the num...

Q: Find the range, variance, and standard deviation for the given sample data, if possible. If the meas...

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Q: The topic of global warmng increasingly appenrs in the news. It has t'he polendial to imoact compani...

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Q: When computing a correlation coefficient, if you have 27 degrees of freedom, your sample size must b...

A: Here we know that degree of freedom of correlation coefficient is (n-2).  

Q: Calculate standard deviation from the following data taking leviations from assumed mean 65: Marks: ...

A: Given that  X Frequency 50 6 55 10 60 14 65 9 70 2 75 5 80 18  

Q: Which of the following is the weakest correlation? Group of answer choices -.22 -.24 .19 1.00

A: In this case, we need to find the weakest correlation.

Q: An important characteristic on Google Trends is the use of A. Annotations ) B. cross section data C....

A: Selected option is correct

Q: A variable is normally distributed with mean 18 and standard deviation 5. Use your graphing calculat...

A:

Q: (a) How many standard deviations above the mean did Sophia score on the Verbal Reasoning section? (...

A: X1=Verbal Reasoning section   X2=Quantitative Reasoning section X1~N( μ1=151 , ?1=9 ) μ1 =151 , ?1 =...

Q: x= 8  u = 10  sigma = 2 find z score

A:

Q: Listed in the accompanying data table are student evaluation ratings of courses and​ professors, whe...

A: Given that,  Sample size for course evaluations = n1 = 93 Sample size for Prof. evaluations = n2 = 9...

Q: What is the correlation between happiness and health?

A: The SPSS output shows the correlation analysis of happy, health, volunteer, family income, stress an...

Q: A psychologist is interested in constructing a 95% confidence interval for the proportion of people ...

A: Given,n=725x=68p^=xnp^=68725=0.09381-p^=1-0.0938=0.9062α=1-0.95=0.05α2=0.025Z0.025=1.96    (from Z-t...

Q: A car hire firm has two cars which it hires out day by day. The number of demands for a car on each ...

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Q: Calculate the following probabilities directly from the cdf: (a) p(2), that is, P(X = 2) (b) P(X > 3...

A: The cumulative distribution function F(x) is defined as F(x) = P(X ≤ 2) Note : According to our guid...

Q: answer e f g h i

A:

Q: Consider the following statements: i. If A and B are independent, then Ā and B must be independent. ...

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Q: Based on the findings, the average monthly salary of 800 college professors in the university belt a...

A: We have given that.   X~N( μ , ?^2 )   μ =55000 , ? =5000 , n=800   Z-score =( x - μ )/?

Q: A check-cashing service has found that approximately 5% of all checks submitted to the service for c...

A:

Q: Situation 2. Dr. Romero observed the level of motivational behavior of his students and tried to fin...

A: Given information: Student Science Grade Motivational Behaviour 1 Failed 3.46 2 Failed 4.3...

Q: Show that for a random sample of size 2 from N (0, ơ²) population, E[Xq„] = - o/Vr.

A:

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)...

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Q: 2014 Top Albums (Based on U.S. sales) Of all of the U.S. album sales, album 1 accounted for 22% of s...

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Q: An analyst develops the following table of joint probabilities relating to the size of firm (measure...

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Q: racteristic havin tance origin? A. nominal C. interval B. ordinal D. ratio

A: Level of measurement having order and distance but no unique origin Choose the correct option

Q: earson’s product–moment correlation coefficient is represented by the following letter: Group of ans...

A: Question: Pearson’s product-moment correlation coefficient is represented by which letter? Answer: I...

Q: Five groups of subjects were given the following four conditions. The data obtained is given below. ...

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Q: Two independent samples have 28 and 19 pairs of observations with correlation co efficients 0.55 and...

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Q: Carl is conducting a research study and finds a significant positive correlation between a state's p...

A: The correct option is (B). Confounding variable

Q: Q. 6. Calculate quartile deviation and its co-efficient from the data given below : Age of years : 1...

A:

Q: Q. 1. Fit a straight line trend by least square method from the following data : Value of X : 1 2 3 ...

A:

Q: greater than one in three games sold is an M-rated game, is this True or False?

A: The above statement is false