Example 16.5 following frequency distribution: Family income and its percentage spent on food in the case of 100 families gave the Food (percentage) Family income (Rs '000) 5-10 10-15 15-20 20-25 25-30 10-15 3 7 15-20 4 9. 4 3 20-25 7 6. 12 5 25-30 3 10 19 8 Calculate the coefficient of correlation and interpret the value.

Q: A population of values has a normal distribution with μ=201.4 and σ=41. You intend to draw a random…

A: Given,sample size(n)=77mean(μ)=201.4standard deviation(σ)=41

Q: A foreign student club lists as its members 3 Canadians, 2 Japanese, 4 Italians, and 3 Germans. If a…

A: Solution:- from given information foreign student club lists as its members  Canadians =3 Japanese =…

Q: b. Calculate the Product Moment Correlation Coefficient, r, and describe the relationship shown on…

A: b. x y xy x2 y2 15 104 1560 225 10816 17 113 1921 289 12769 20 188 3760 400 353444 25 275…

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A:

Q: 8.S.2 Refer to Exercise 8.S.1 0. Compare the before and after populations using a t test at a =…

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Q: You are conducting a study to see if the accuracy rate for fingerprint identification is…

A: The null and alternative hypothesis are H0 : p =  0.23H1: p  ≠  0.23 We have given thatn = 228x =…

Q: According to NEA Advocate (2007), the averages for the 2005-2006 academic year, 34 CSU Stanislaus…

A: The provided information is x¯1=$65800x¯2=$72400σ1=$12000σ2=$8000n1=34n2=40α=0.05 The critical value…

Q: fc 1 11 11 16 32 3 23 69 Total 50 112

A: The given table is  c f fc 1 11 11 2 16 32 3 23 69 Total 50 112

Q: 11. The probability that it will snow on any particular day in January is 0.3. Use the Binomial…

A: Ans- The probability that it will snow on any particular day in January is 0.3  i.e  P =  0.3 and n…

Q: South Africa's economy posted 15 consecutive years of growth between the end of apartheid and the…

A: Given Information: No. of graphs=021st graph=GDP growth rate2nd graph=Unemployment rate

Q: res in The data at the right shows the scores of five students in Statistics and Physics quizzes.…

A: Given information: X Y X^2 Y^2 XY 90 89 8100 7921 8010 88 88 7744 7744 7744 88 90 7744…

Q: (d) What sample size is necessary to estimate true average porosity to within 0.23 with 99%…

A: ( d ) For the given data Find n =?

Q: An article in Concrete Research ("Near Surface Characteristics of Concrete: Intrinsic Permeability,"…

A:

Q: A population of values has a normal distribution with μ=201.4 and σ=41.3 You intend to draw a random…

A: A population of values has a normal distribution with μ=201.4 and σ=41.3  n=77

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Q: Assume that adults have IQ scores that are normally distributed with a mean of 104.9 and a standard…

A: Given that  X~N(μ=104.9 , σ=16) Formula for Z-score  Z=(X-μ)/σ

Q: What is the predicted explanatory value?

A: here use given Regression line

Q: 2. A random sample of 433 voters revealed that 100 are in favor of a certain bond issue. A 95…

A: Given that  Sample size n =433 Favorable cases x =100 Sample proportion p^=x/n  =100/433 =0.2309…

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A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

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Q: 1 Would you describe the shape of this distribution as: normal skewed left skewed right

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Q: 25. In a tennis tournament with 18 players, how many possible matchups (one-on-one) are there?

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Q: I’m interested in seeing whether or not there is a relationship between the number of hours someone…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Use the z-score formula, z=x−μ/σ , and the information below to find the value of σ. Round your…

A: Ans- Find the value of σ.      Given  z=−1.90, x=14.12, and μ=19.44

Q: 1)Begin with the formula of the Durbin Watson DW statistic and the coefficient of first order…

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Q: Using the three difference equations listed of the SIR model, create a 3 column population model in…

A: Given Information: Consider the given information.    St=99,  It=1,  Rt=0 ,α=0.001, γ=0.05

Q: Netflix is considering a new romcom (romantic comedy) series. Before making a final decision, the…

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Q: L8Q9.Find the relationship between the two variables using the given data. x 1 2 3 4  5   y 15 30 45…

A: Let X denote the independent variable Let Y denote the dependent variable The given data is,

Q: Does it take less time for seeds to germinate if they are near rock music that is continuously…

A: Given that

Q: Mary has an assignment to ask at random 30 students in their school about their grades in…

A: Given data is Grades Frequency 95-99 9 90-94 6 85-89 9 80-84 3 75-79 3

Q: (a) What is the equation of the regression line for predicting clutch size based on snout-vent…

A: Note: As per the guidelines, we can solve only first three sub parts. So , please repost the other…

Q: ou are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the…

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Q: O Question 2 Sam is a competitive swimmer that competes in the 100 m freestyle and 100 m backstroke.…

A: The standard normal variate is also known as z score. It is calculated by the combined value of mean…

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A: In this case, we need to identify the correct option for the given statement.

Q: Question 19 A lawyer claims that women are pald less than men for the same work. In a random sample…

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Q: Part a) What is the expected number of policies that will pay out before the insured parties have…

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Q: I am interested in knowing how best to treat depression; I want to measure the impact of different…

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Q: 7.S.6 A plant physiologist conducted an experiment to determine whether mechanical stress can retard…

A: Given:

Q: The third worksheet labeled sample B is a simple random sample with replacement, with seven…

A: From the provided information, Population standard deviation of the random variable X is 4. That is…

Q: A clinical psychologist is concerned that the social-isolation necessitated by the pandemic is…

A: Given the data as Before Self-Isolation 1 Week of Self-Isolation 2 Week of Self-Isolation 3 Week…

Q: How many individuals are described in this table? How many females were among the respondents? The…

A: Here as per GUIDELINES I HAVE CALCULATED 3 SUBPARTS PLZ REPOST WITH NOTE I NEED THIS THIS ,.... here…

Q: In an experiment to investigate the performance of four different brands of spark plugs intended for…

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Q: What is the probability of an equally likely event?

A: Here we will use basic of probability

Q: The probability of a die coming up with the number 10 is zero O 1 O 1/10 O %6 1/6 Complete Later…

A: Given that  A die is rolled  Sample space=S=(1,2,3,4,5,6)

Q: You wish to test the following claim (HaHa) at a significance level of α=0.001       Ho:p1=p2…

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Q: Find the area of the indicated region under the standard normal curve. Click here to view page 1 of…

A: Ans - Find the area of the indicated region under the standard normal curve.          The area…

Q: Scores on a certain "IQ" test for 18-25 year olds are normally distributed. A researcher believes…

A: Solution:- from given information Null hypothesis H0:μ=110Alternate hypothesis Ha:μ<110mean…