What sampling techniques should be used while establishing if someone is happy or not?

Q: Q3. In a binomial distribution of k Successes from n trials: The number of different sequences is gi...

A: The number of different sequences is given by kCn is TRUE.  So, Statement | is TRUE.

Q: Q. 11. Calculate current year quantity index using, (i) Laspeyie's, (ii) Paasche's (iii) Bawley's (i...

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Q: THE ASQ-3 is a standardized screeing tool. Scores on each domian of the screening tool, communicatio...

A: We have given that  Sample size n = 25 Population mean μ =48.7 Population standard deviation =9.2  

Q: Express the confidence interval 0.182±0.0470.182±0.047in open interval form (i.e., (0.155,0.855)).

A: We have given that  Confidence interval ( 0.182±0.047) In confidence interval.  ( point estimate ± m...

Q: Calculate combined mean from the following information. Total no. of boys = 50 %3D Mean weight of bo...

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Q: 13 10 12 7 Standard 8 14 How many students competed in Smooth or Rhythm, but not Standard? 28 How ma...

A: From the given Venn diagram How many students did not complete in Rythm ?

Q: Q. 8. Calculate co-efficient of correlation from the followine results: N= 5 Ex = 80 Ey = 130 E(x-5)...

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Q: 31) Based on the scatter plot below, the best estimate of the correlation coefficient is 40 30 20 10...

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Q: Describe Non- probability Sampling Techniques (convenience, judgemental, quota and snowball).

A: Non-probability sampling : Sample selection based on the subjective judgment of the researcher is ca...

Q: Answer A B and C please! Show work!

A: We have given that  Success of probability p =19%=0.19 Number of trials n=13  

Q: A particular forecasting model was used to forecast a six-month period. Here are the forecasts and a...

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Q: A survey asks: Which online services have you used in the last month: • Twitter • Facebook • Have us...

A: Formula : P(A u B) =  (P(A) + P(B) - P(A n B) 

Q: Evaluate loge 7 by Simpson's (i) rd, and (ii) th rules.

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Q: In a private school students can choose only of French, Spanish or Music as their Elective. In a gro...

A: i. The contingency table is given as follows:   Spanish French Music Total Males 2...

Q: 1. Suppose that two runners from team A and three runners from team B participate in a race. Further...

A: General formula of probability ,  Probability = Number of favorable outcomes Total outcomes    Formu...

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

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Q: Draw a normal curve with a mean of 66 and a standard deviation of 14. Describe how you construct...

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Q: If n = 110 and X = 88, construct a 99% confidence interval for the population proportion, p. Give y...

A: Given that  Favorable Cases XX = 8888 Sample Size NN = 110110

Q: If X is a Poisson variable such that P(X = 2) = 9P(X= 4) + 90P(X = 6), find the mean and variance of...

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Q: Standard normal table (page 2) POSITIVE z Scores Standard Normal (z) Distribution: Cumulative Area f...

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Q: Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval...

A: According to the given information, we have Sample size, n = 323 Probability, p = 26% = 0.26 Confide...

Q: Compute co-efficient of correlation from the following given results: x =10, Edx = 0. Edy = 0, E(x-R...

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Q: The life-time in hours of a certain electrical equipment has the normal distribution with mean - 80 ...

A: We hsve to find given probability using z table.

Q: Explain the difference between absolute and relative dispersion. If 20 is subtracted from every obse...

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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: A bank has a policy that the proportion of loans made to people with more than $50,000 in debt shoul...

A: The hypotheses for the test are given below. Null hypothesis: H0: p ≤ 0.15 Alternative hypothesis: H...

Q: Q2. Identify the Incorrect statement. In a Binomial Distribution each trial: A. Has the same 2 possi...

A: we know; in a binomial distribution- 1. each trials are independent. 2. each trials has only 2 outco...

Q: Construct a 95% confidence interval for the population mean for sample A. (Type integers or decimals...

A: For sample A  given data is  1,1,2,3,6,7,8,8

Q: Find the indicated probabilities. Give your answers to four decimal places. P(blue eyes | red hair) ...

A: Here use given tree diagram and Bayes rule

Q: Given in the following informátion in case of two attributes : (AB) = 400, (A) = 800, N= 2,500, (B) ...

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Q: When rs = 0.3 and x = 10. It was later discovered that the difference in ranks in two subjects by on...

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Q: SUV Honda 11 4. Red 12 How many SUV's are in the parking lot? How many red Hondas are in the parking...

A: Given data is

Q: The co-efficient of value correlation between two prices of a company is + 0.27, if the sum of squar...

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Q: Investor Elliot buys shares of stock A for $10,000, while investor Michael takes a short position in...

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Q: A production process has a cycle time, time to produce a part, that is normally distributed with a m...

A: We have given that.   X~N( μ , ?^2 )   μ =12.6 , ? =2.4   Z-score =( x - μ )/?

Q: truct a grouped frequency distribution and a cumulative frequency distribution with 5 classes. 60 75...

A: We have given that data  First I want to Arrange data in ascending order.  54, 55, 55, 56, 60, 60, 6...

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: You are interested in finding a 98% confidence interval for the average commute that non-residential...

A: Given27,27,9,26,9,26,19,18,17,25,24sample size(n)=11

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

A: Given information: As per guidelines we will only answer the first three subparts, please repost oth...

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

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Q: A researcher has collected the following sample data. The main of the sample is 5. 3 5 12 3 2 ...

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Q: The life-time in hours of a certain electrical equipment has the normal distribution with mean - 80 ...

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Q: From the below given data calculate trend values. Years : 1988 1989 1990 1991 Sales in (1000): 10 12...

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Q: Calculate range and its co-efficient from the following statistical data: Profits ( $ in 000's) 125,...

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Q: Two chips are drawn at random and without replacement from a bag containing three blue chips and one...

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Q: The price index and quantity index of a commodity were 120 and 110 respectively in 2005 with base 20...

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Q: Assume that a sample is used to estimate a population mean μμ. Find the 90% confidence interval for ...

A: We have given that  Sample size n =39 Sample mean =74.7 Standard deviation =19.7

Q: The coefficient of rank correlation of the marks obtained by 10 students in statistics and accountan...

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Q: Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The re...

A: Given : Total number of discs=100 (A) denote the event that a disc has a high shock resistance Event...