The correct formula for effect size using Cohen's d for a single-sample t test is:

Q: Calculate Price Index Number for 2016 from the following data by simple aggregate method, taking 201...

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Q: Foodland shoppers have a mean grocery bill of R370 with a standard deviation of R100. What is the pr...

A: Let X be the random variable from normal distribution with mean (μ) = R370 , standard deviation (σ) ...

Q: a lottery game, 4 numbers are chosen at random. Each number can take a value 1, 2, 3, or 4, and each...

A: Here Given In game of lottery 4 numbers are .chosen at random and each has equally likely  So Probab...

Q: g. P(z<zo) = 0.5 h. P(zszo) = 0.0091

A: Given:  z be the standard normal variate N(0,1)  to find value of Z0  g): p(Z&lt;Z0)=0.5  h): p(Z&lt...

Q: 4. The following are the number of hours travelled by a senior high school student to go to school e...

A: Given that  XX X^2X2 .5 0.25 .25 0.0625 1.4 1.96 1.5 2.25 .85 0.7225 .20 0.04 1.5 2...

Q: For each of the following situations, Specify the standard deviation, s.d. of the sampling distribut...

A: We have, SD = p1*(1-p1)n1+p2*(1-p2)n2  

Q: dvity 1. A. True or False. Write the word TRUE if the statement is correct and FALSE if the statemen...

A: As per our guidelines we are supposed to answer only 3 sub-parts of any question so I am solving fir...

Q: People living in a town are grouped according to their age into five groups. The number of persons l...

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Q: Example 12. Find the average marks of students from the following table : Marks No. of students Mark...

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Q: Property 4. If the distribution function of a r.v. X is symmetrical about zero, i.e., if 1– F(x) = F...

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Q: In a survey of 2001 adults in a recent year, 701 made a New Year's resolution to eat healthier. Cons...

A: Given,n=2001x=701sample proportion(p^)=xnp^=7012001=0.3501-p^=1-0.350=0.650

Q: For the following questions with n=16. P(-2.002.00)= P(t1.60)= P(-1.50<t<1.50)= felle

A: Note: As per our company guidelines, we are supposed to answer only the first question. Kindly repos...

Q: Acredit score is used by credit agencies (such as mortgage companies and banks) to assess the credit...

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Q: Calculate the mean deviation (from mean) from the following data :

A: Here use formula of mean deviation 

Q: Consider a puzzle is created where the amount of time it takes an individual to solve the puzzle fol...

A: Solution: Let X be the amount of time takes an individual to solve puzzle has a normal distribution ...

Q: d) Find interquartile of the data e) Find the 83rd and 70th percentile

A: Given: Age of trees, X 18 21 22 25 26 27 29 30 31 33 36 37 41 42 4...

Q: on thế health of the Filipino people. He found out that average weight for women is 70 kg with a sta...

A: Given : population mean=μ = 70 population standard deviation=σ= 6

Q: What is the point estimator of the population proportion, p

A: Point estimator is a statistic that is used to estimate the population parameter.

Q: Use the properties of the mean and median to determine which are the correct mean and median for the...

A: Here we see that from above graph that, distribution is positively skewed.  Here mean is lies in mor...

Q: In a survey of 2001 adults in a recent year, 701 made a New Year's resolution to eat healthier. Cons...

A: Given: n = 2001 x = 701  

Q: a) compute the 3-sigma control limits and the central line for the x-bar a subgroup size of 25.

A: The provided information is μ=2.52 ft δ=0.8 ftmean and variance are known.  n=25 a. The 3-sigma limi...

Q: (a) A daily sample of 30 items was taken over a period of 14 days in order to establish control limi...

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Q: For two groups of observations, the following results are available : Group 1 E(X – 5) = 3 Group II ...

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Q: Consider a sample data set with the summary statistics s=112, Q = 58, and Q= 203. a. Calculate IQR. ...

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Q: The random sample of 5 school students is selected and their marks in statistics and accountancy are...

A: The regression line are used to predict the future values. There are two types of regression lines, ...

Q: An office manager has received a report from a consultant that includes a section on equipment repla...

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Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 2 1 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean num...

A: Given data is 0.5 0.25 1.4 1.5 0.85 0.2 1.5 1.75 0.1 0.65 0.75 2 1 1.1 1.65 1.4 0.6 0.35 0...

Q: above 142 College Entrance Exam shows that the scores are normally distributed with a mean of 125 an...

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Q: In a recent Pew Research Center nationwide telephone survey of American adults, 75% of adults said t...

A: Givenp=75%=0.75sample size(n)=1400Mean(μp^)=p=0.75standard deviation(σp^)=p^(1-p^)n=0.75(1-0.75)1400...

Q: Given the power regression model y = 20x^1.6, which is the linear regression model after transformin...

A: The dependent variable is y and the independent variable is x. The log-log regression model can be g...

Q: If Elson's z-score on post-assessment is -3, the mean is 10 and the standard deviation is 2, what wa...

A: As per guidelines expert have to answer first question only dear student please upload other questio...

Q: We borrowed $1000 at a 10% annual interest rate. If we did not make a payment for two years, and ass...

A: Given we borrowed $1000 at 10% annual interest rate. Please find the solution below. Thank you

Q: Example 6. Draw a histogram for the following data on the size of families :

A: Given:  given data values of nonof children's and nonof families then draw the histogram of no of fa...

Q: The alternative hypothesis of the chi-square test states that the obtained chi-square value will be:...

A: In the chi-square test, the null and alternative hypotheses will be: Ho: There is no difference betw...

Q: The summary statistics below are prices of three types of men's shoes Dress: size =7; mean = 106 and...

A: It is given that,   Size (n) Mean  Standard deviation Dress 7 106 73 Casual 5 97 23 Moccasi...

Q: Calculate the standard deviation from the following data : Size of item Frequency Size of item Frequ...

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Q: Explain Statistics & Sampling Variability and how does it affect the parameters and random variables...

A: The number that can be computed from sample data is a statistic.  x=sample means=standard deviation ...

Q: The fracture strength of a certain type of manufactured glass is normally distributed with a mean of...

A: The random variable fracture strength follows normal distribution. The population mean is 594 MPa. T...

Q: The weight of elephants at a zoo in Pittsburgh has a population mean of 5.3 tons and population stan...

A: Given Mean(μ)=5.3standard deviation(σ)=1.2sample size(n)=12

Q: 2. The average test score in a certain statistics class was 74 with a standard deviation of 8. There...

A: As per guidelines expert have to answer first question three subparts only dear student please uploa...

Q: Suppose that 50% of all babies born in a particular hospital are boys. If 6 babies born in the hospi...

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Q: "For each observation, add up the attribute value of all its neighbors (including itself) and divide...

A: Explanation: Getis and Ord (1992) established the Getis-Ord Gi statistic as a local statistic that r...

Q: A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings...

A: Given: Margin of error (E) = 0.84 milligram Population standard deviation (σ) = 3.19 milligrams  

Q: Because of the relatively high interest rates, most consumers attempt to pay off their credit card b...

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Q: 1 Consider two events A and B such that P(A) = , P(A/B) = – and P(B/A) = Examine the following state...

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Q: An five tosses of a coin, find the probability of getting exactly x heads and hence find the expecte...

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Q: The mean number of errors on a test area on a disk is 0.2. Find the probability that a test area has...

A: Let X denote the number of errors on a test area. It is given that mean number of errors = 0.2 Note ...

Q: c. Third or upper quartile (Q3) d. IQR e. Find the range for the outlier outliers and the outliers

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Q: There are 8 players on an amateur basketball team. They are practicing their free throws by having e...

A: Given Information: Total Number of players = 8 "X" represents a missed free throw and "O" represents...

Q: For #s 7- 8, refer to the problem below: A hospital researcher is interested in the number of times ...

A: Let X be the random variable having probability mass function is,  X 0 1 2 3 4 5 P(x)  0.08 0.1...