Example 19. Find the standard deviation from the following data: Size of the item : 10 11 12 13 14 15 16 Frequency : 11 15 10 4 1 Also find the coefficient of variation.
Q: 10:44 1 l LTE A go.room.sh sure 10:27 thankyou SS 10:27 Student The national council of small busine...
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A: Given that, A bag contains 2 white and 3 black balls. Four persons A, B, C and D in the order named ...
Q: Data from a sample survey contain 28% foreign born and 72% native born when the population of intere...
A: Given: Data from a sample survey contain 28% foreign born and 72% native born when the population of...
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Q: Which of the following is a (most likely) discrete variable? (A Total number of boxes sold daily B A...
A: Solution-: Which of the following is a (most likely) discrete variable? (A) Total number of boxes so...
Q: Compute the margin of error of the 90% confidence level when a = 3 and n= 30
A: Given that ?=3 , n=30 Formula for margin of error E=Zc*?/√(n)
Q: Which of the following measures is easily affected by extreme data or values? (A) Median (B Range C)...
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Q: (a) In performing this statistical test, state the hypotheses. O Họ: the total number of apples peop...
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for you...
Q: Can we be 99% confident that the majority of fans approve of the rule changes?
A: Here use basic of confidence interval
Q: Which of the following is NOT part of descriptive statistics? (A Collection data (B An inference mad...
A: We know that, The descriptive statistics consists collection of data , summarizing of data and prese...
Q: In a population that is normally distributed with a mean X and standard deviation Y, determine the a...
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Q: Suppose that the plurality with elimination method is used on the following preference table. If the...
A: at first rewrite the table.......
Q: 90 voters are asked to rank four brands of cereal: A, B, C, and D. The votes are summarized in the p...
A: Plularity elimation method is used to decide the winner of the election. It is based on the least el...
Q: the population mean. II. The central limit theorem is used to conclude that the distribution of the...
A: central limit theorem we we know that, distribution of sample mean is approximately normal when sam...
Q: You are conducting a quantitative research on the study habits and academic performance of the Senio...
A: From the provided information, Standard deviation (σ) = 8 Confidence level = 95% Margin of error (E)...
Q: Prove that the sum of the probabilities of all possibilities in two independent events amount to cer...
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Q: A carbon monoxide detector contains a battery that should have mean lifetime of 365 days, and standa...
A: given,mean(μ)=365standard deviation(σ)=12
Q: The arithmetic average of the following distribution is 40. Find the value of k. 30 k + 10.5 6. 20 2...
A: x f f.x 20 2 40 25 7 175 30 15 450 k+10.5 10 10 k+105 60 6 360 Total 40 1130+10 k
Q: 14.8. It has been suggested that the short-term interest rate r follows the stochastic process dr = ...
A: Given Information: Consider the rate r follows the stochastic process which is defined as: ...
Q: Members of a music club are choosing a new club logo. The choices are a guitar (G), a keyboard (K), ...
A: Statistics is the branch of Applied Mathematics. In which we collect data and analyse it.
Q: ß increases as µ approaches Howhen H, is false True False
A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...
Q: Average marks in Statistics of 10 students of a class was 68. A new student took admission with 72 m...
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Q: A researcher is interested in the effect of a drug on sy tolic blood pressure. In a random sample of...
A: We have given that Sample size n =28 Mean difference Mdiff= -9.3 standard deviation difference sdi...
Q: The total nitrogen (TN) concentration (mg/L) is one of the important indicators for a water sample. ...
A: Here sample is given, Xi: 21, 23, 30, 28, 22, 27, 32, 35 Sample size is n= 8 Null hypothesis...
Q: a) The maintenance department has tested the batteries in one of its stores. The tested batteries we...
A: Here, we have to calculate the mean and variance of given grouped data.
Q: A fine dining restaurant claims that the group sizes of their customers follows the following distri...
A: Given that A fine dining restaurant claims that the group sizes of their customers follows the foll...
Q: X-5 (a) Two variables X and Y are related by Y = and each of them has 5 observations. If mean of X 1...
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Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive effec...
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Q: We need to create a frequency distribution table
A: here use formula for no of interval then make interval for given value here n= no of observation = ...
Q: While checking receipts at Reds, it was determined that the average amount spent on food per table w...
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Q: A bag contains 5 white and 8 red balls. Two drawings of 3 balls are made such that (a)" the balls ar...
A: Probability is the likellihood of event happening. It is calculated by dividing the favorable number...
Q: Ethe standard deviation of a nut's hole diameter exceeds 0.01 millimeters, there is an unacceptably ...
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Q: The frequency of accidents for drivers follows a Poisson distribution. Good drivers can expect to su...
A: rate of accident for good drivers = 1 per year rate of accident for bad drivers = 2 per year proport...
Q: Assume the returns of a stock follow a normal distribution with a mean return of 18% and a standard ...
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Q: 2 Suppose that player A plays the mixed strategy 3' and player B plays the mixed 9' (G) strategy Fin...
A: Given that player A plays the mixed strategy 23,29,19.
Q: The number of typhoon occurring in the Philippines in a particular month is known to conform to the ...
A: Given,standard deviation of the poisson distribution is 2so, λ=2λ=4A random variable X~Poisson(λ=4)P...
Q: One bag contains 4 white and 2 black balls. Another contains 3 white and 5 black balls. If one ball ...
A: INTRODUCTION IN THE ABOVE GIVEN PROBLEM WE HAVE TO FIND THE ...
Q: Not rejecting the null hypothesis when it is true would also mean that the alternative hypothesis is...
A: Null and alternative hypotheses: Null hypothesis: The null hypothesis is a statement that indicates ...
Q: How do I find the population mean (not the sample mean) in order to solve for t? (Second page)
A: Hypothesis testing uses data from a sample to draw conclusions about a pop.
Q: In the normal distribution, 68.3% of the values are within three standard deviations of the mean. In...
A: Empirical rules:1) 68% of the data values lies within one standard deviationsof the mean.i.e P(μ-σ&l...
Q: For a binomial random variable with a mean of 20 and 100 trials, what is the standard deviation? * 1...
A: Given : For a Binomial r.v with Mean = 20 No. of trials (n) = 100
Q: Given *,=4, x,=7, x,=5, x,=9, x,=1I, x,=2, and x,=6 , evaluate the summation: 2*, i=1 A 34 B. 38 40 ...
A: Given,x1=4 , x2=7 , x3=5 , x4=9 , x5=11 , x6=2 , x7=6
Q: Define statistics in your own words, then give two examples of professions that use statistics and h...
A: Statistics is a branch of applied mathematics that involves the collection, description, analysis, a...
Q: The General Social Survey asked women how many children they had. The results are in the table below...
A: Given tha, the General Social Survey asked women how many children they had. The results are in the ...
Q: Suppose that you have seen a local TV channels. Suppose also that the probability that any one stati...
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Q: Trevor is interested in purchasing the local hardware/electronic goods store in a small town in Sout...
A: Binomial distribution is given by
Q: Do male and female servers at Swank Bar work the same number of hours? A sample of 65 female servers...
A: Given that And Which of the following does your data suggest? Male servers work more hours Fema...
Q: Example 5. From the following data, calculate the quartile deviation and the coefficient quartile va...
A: Given data is wages 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 No. of workers 20 45 85 160 ...
Q: You may need to use the appropriate technology to answer this question. Consider the following hypot...
A: GivenH0:μ=100Ha:μ≠100sample size(n)=65α=0.05
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