t estimates association between a binary outcome between groups at group level A. risk difference B. risk ratio C. odds ratio   A type of sampling that involves referral/recruitment of another sample from the sampled respondent.  a. random sampling b. convenience sampling c. respondent driven sampling

Q: Combination or Permutation?

A: Forming triangle from 5 noncollinear points is just selection of 3 points out of 5 here order doen n...

Q: D E F K M P Assume X is normal random varaible with mean 50 and sandard deviation 10. P(X>30)= P(40<...

A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=50standard deviation...

Q: After graduating from college in 2010, Art Major's starting salary is $30757.00. Suppose Art Major h...

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Q: Two samples of 6 and 5 items, respectively, gave the following data : Mean of tne first sample 40 St...

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Q: In a group of 21 aliens, there are 6 Cybermen, 7 Daleks and 8 Jovians. (a)  Suppose that 5 aliens a...

A: It is given that there are 21 aliens in a group, where there are 6 Cybermen, 7 Daleks, and 8 Jovians...

Q: Lesson 8 Q7 Find the critical value if df = 16 and α = 0.050. A.36.415 B.26.296 C.24.996 D.16.151

A: We have given that,  Degree of freedom (df) = 15 and significance level (α) = 0.050 Then,  We will f...

Q: Sex education in public schools * Respondents sex Crosstabulation Respondents sex MALE FEMALE Total ...

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Q: A pack of potato chips is randomly chosen from the outputs of machine A. Find the probability that i...

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Q: A sample of 300 students of Under-graduate and 300 students of Post-graduate classes of a university...

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Q: 3. If (X(t)} is a WSS process and if Y(t) = h(u) X(t – u)du, then (i) Ryy (T) = R(T)* h(-t) and (ii)...

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Q: Nine students are to be seated in a row of chairs. How many arrangements are possible if 3 students ...

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Q: A solution of a differential equation that is free of arbitrary parameters is called a/an solution.

A: Particular solution.   A solution of a differential equation that is free of arbitrary parameter is ...

Q: 3) Calculate the mean, the median and the mode of each of the following data sets a. 2, 3, 4, 5, 7, ...

A: Mean = ΣXi/n Here sample size is n= 7 Mean = (2+3+4+5+7+7+7)/7 =35/7 = 5 Here 7 occurs highest times...

Q: Find the missing number from the given probability distribution table. Outcome Probability 5 0.2 10 ...

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Q: In a car service station, there are two service lines. The random variables X and Y are the proporti...

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Q: Find the z value that corresponds to the given area. -0.4066

A: From the provided information, The area to the right side is 0.4066. That is P (Z &gt; z) = 0.4066

Q: Solve the problem below, showing your work for each step by filling-in the blanks. Round all z-score...

A: Let X be the random variable from normal distribution with mean = 25 hours and standard deviation = ...

Q: Ihastration 8.(b) Calculate the mean deviation from the following data: Size 0-10 10-20 20-30 30-40 ...

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Q: Sampling variability refers to how much the estimate varies from ___________________. sample to samp...

A: The first option is correct. i.e. Sampling variability refers to how much the estimate varies from s...

Q: Nuclear power: The following table presents the number of nuclear reactors as of August 2, 2013, In ...

A: Given data is2,1,7,2,2,19,18,6,4,9,4,20,1,2,1,3,2,33,4,2,23,10,15,100

Q: X AutoSave O Search (Alt+Q) Robert Krnic Off inclass_continuous File Review View P Comments É Share ...

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Q: A tourist agency in Kansas claims the mean daily cost of meals and lodging for a family of four trav...

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Q: Two RVs X and Y have the joint characteristic function ø.y (@1, 02) exp (-2 w† – 8 ož). Show that X ...

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Q: Construct a stem-and-leaf plot for the following data, in which the leaf represents the hundredths d...

A: For the given data Construct a stem and leaf plot

Q: The average GPA scored by a class is 4.76, and the standard deviation is 0.64. For a sample of 16 st...

A: The random variable GPA follows normal distribution. The population mean is 4.76. The population sta...

Q: How a large sample should be taken to be 95% sure that the error of estimation does not exceed 0.3 u...

A: Givenstandard deviation(σ)=5Margin of error(E)=0.3confidence interval=95%

Q: 7. A meeting of consuls was attended by 5 Americans and 3 Germans. If three consuls were selected, w...

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Q: Permutation or Combination? Selecting 5 members to form a group Five friends posing for a picture-t...

A: Three statements are given and objective is to find does it required combination or permutation.

Q: The number N of residential homes that a fire company can serve depends on the distance r (in city b...

A: Given,N=Cπr2here C=7π=3.1416E(N)=E(Cπr2)E(N)=CπE(r2)

Q: Question 1: The University of Professional Studies, Accra (UPSA) aims to evaluate students’ acade...

A: Introduction - Descriptive statistics - Descriptive statistics are numbers that are used to summariz...

Q: Miles (per day) Use the given frequency distribution to find the (a) class width. (b) class midpoint...

A: Given Number of frequency 5

Q: Let x be a continuous random variable that is normally distributed with a mean of 25 and a standard ...

A: GivenMean(μ)=25standard deviation(σ)=4

Q: the number of 0+ donors selected, and Y the number of O- donors selected. Find the probability distr...

A: here 3 donors are randomly selected  so n= 3 and probability of donor is O+ = 1/3 and probability of...

Q: (d) Which countries are outliers? Select the outlier(s). Select "There are no outliers.", if applica...

A: Given data is2,1,7,2,2,19,18,6,4,9,4,20,1,2,1,3,2,33,4,2,23,10,15,100Arrange the data in ascending o...

Q: The deviation of each observation (x) from the mean of the predictor variable is negative for every ...

A: The mean of the predictor variable is given by the vertical line of x̄. The mean of the response var...

Q: Analyzing a Given Study Space Tourism? According to a survey conducted by the Pew Research Center, m...

A: The given data is based on Pew Research Center conducted the survey of more US Adults that if they w...

Q: 4 Example 4. The average cost for a commodity is given by AC = x + 4 +-. Find the total and marginal...

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Q: . Adult men Stride length (meters) 2.5 3.0 3.3 3.5 3.8 4.0 4.2 4.5 Speed (meters per second) 3.4 4.9...

A: We have given that,  The data set is,  Stride length (X) :- 2.5, 3.0, 3.3, 3.5, 3.8, 4.0, 4.2, 4.5 S...

Q: If eff(u1, u2) = , which estimator is preferred when the fraction is greater than 1? What is the val...

A: given:  Relative efficiency of u1 with respect to u2  If eff(u1,u2)&gt;1 then which estimator will b...

Q: A) Which of the following experiments does NOT have equally likely outcomes? A- Choose a number at r...

A: Equally likely outcome : Equally likely outcome means all the outcome should have equal probability....

Q: 1a. The distribution of the mark scored by three candidate in a professional examination are 54, 24,...

A: 1a. Given The data is as follows: 54, 24, 36

Q: A simple random sample of 60 items from a population with o = 9 resulted in a sample mean of 31. If ...

A: Given,n=60x¯=31σ=9

Q: Count Respondents sex MALE FEMALE Total Favor or FAVOR 30 27 57 oppose death (expected) penalty for ...

A: Any assumption about the parameter or probability function is known as hypothesis testing. For the G...

Q: A researcher knows that the weights of 6-year olds are normally distributed withu = 20 kg and o = 3....

A: The random variable is weights of 6-year old follows normal distribution. The population mean is 20 ...

Q: How large a sample is required to be 90% confident that our estimate of population mean is not off b...

A: Given  ɑ=0.10, σ,=0.20, MOE=0.03   

Q: Give a brief analysis on the graph given in the picture by using the data (Dominant behaviors of rei...

A: From the given graph, The dominant behaviors are given for treatment 1 and treatment 2. From the giv...

Q: b) Find the value of c for which this test will have a significance level of 0.05. (Give your answer...

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Q: Preschool kids suffer if mother works Respondents sex Crosstabulation Respondents sex MALE FEMALE To...

A: Here dependent variable is attitude towards mother employment of preschool kids. Independent variabl...

Q: 4. A box contains 4 green and 2 blue dice. Three dice are chosen one after the other. Determine the ...

A: Given,no.of green dice=4no.of blue dice=2Total no.of dice=6

Q: What is the probability that the mean number of minutes of daily activity of the 66 mildly obese peo...

A: Given: Mean no. of minutes of daily activity of mildly obese people, μ1=365sd of of daily activity o...