Calculate the 80th percentile of the data shown x 1.4 1.9 2 2.3 3 9.2 9.7 10.8 14.9 16.8 17.1 17.4 20.1 20.4 22 25.7 26.4 27.1 27.5

Q: ppose a data set of 4,000 observations (n-4,000) was analyzed using OLS to examine the factors…

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A: Given that Population proportion (p)= 0.52  Sample size (n)= 1000  A recent survey found that 512 of…

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A: The sample mean is 36.

Q: Question 2 18% of all college students volunteer their time. Is the percentage of college students…

A: Given that  Sample size n =313 Favorable cases x =47 NOTE:- According to bartleby guidelines expert…

Q: Use the given confidence interval to find the margin of error and the sample mean.   ​(13.3​,22.9​)

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Q: Based on the following calculator output, determine the inter-quartile range of the dataset.…

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Q: Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article…

A: The question is about confidence interval for a popl. prop. Given : Total no. of young adults under…

Q: Compute the Mean, Median, Mode of the two groups (Male and Female) Female Height (inch) Frequency…

A: x f fx 59 1 59 60 5 300 61 1 61 62 4 248 63 3 189 66 1 66   ∑f=15 ∑fx=923…

Q: A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to…

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Q: Consider the following sample with 20 observations: 1     1    5     7    9    11   11   14  14  19…

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Q: < H 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 DATA SET C 23 24 25 26 27 28 29…

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Q: You wish to test the following claim (HaHa) at a significance level of α=0.10α=0.10.…

A: The random variable X follows normal distribution. We have to test whether the population mean is…

Q: QUESTION ONE A. Consider the following sample with 20 observations: 1 1 5 7 9 11 TT 20 28 88 11 (i)…

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Q: Find the area of the shaded region under the standard normal distribution between the given…

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Q: Lifetime of electronics: in a simple random of 100 electronic components produced by a certain…

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Q: For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the…

A: The following information has been provided: The hypothesized mean is μ=19.7

Q: Since an instant replay system for tennis was introduced at a major​ tournament, men challenged 1441…

A: Solution-: Given: n1=1441,n2=747,x1=429,x2=215,α=0.01 We want to find, (a) What is null and…

Q: B. A manufacturing company is analyzing its accident record. The accidents fall into two categories:…

A: Given information: Minor dealt with by first aider: Average cost k 50. Major hospital required:…

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A: Given data; The population standard deviations of the distributions of recovery time (in days) for…

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A: Mean is the average of all the observations. It is calculated by dividing the number of observations…

Q: Sample Size: Calculate the sample size. Karen from Big Chip cookie company discovered that on…

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Q: C. An insurance company has a portfolio of 10,000 policies. Based on past data, the company…

A: The total number of policies is n= 10000. Probability, p= 0.003 Let X represents the number of claim…

Q: Suppose that a particular candidate for public office is in fact favored by 48% of all registered…

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Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Mean  = 158 Standard deviation = 17.6 Sample size = 12

Q: Digital signatures have a potential weakness due to lazy users. In e-commerce transactions, a…

A: digital Signatures:  To provide authenticity for a report or a virtual message, a unique…

Q: Emilia buys a bag of cookies that contains 7 chocolate chip cookies, 5 peanut butter cookies, 6…

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Q: Suppose Texas A&M University-Commerce has five scholarships available for the women's basketball…

A: Given data: Player Rank by caan Rank by Cannell difference (d) d-square 1 5 3 2 4 2 7 5 2 4…

Q: QUESTION ONE A. Consider the following sample with 20 observations: 1 1 5 7 9 11 20 H 23 28 28 11 39…

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Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: Given that  n = 337 , X = 24 , p = 12% = 0.12  Note : According to bartleby experts question answers…

Q: Calculate the standard error for a sample mean when the population standard deviation is 250.1 and…

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Q: The table shows the results of test-firing 25 ground to air missiles at targets of various speeds (x…

A: Here from the table first we have to find the regression equation or model.

Q: A survey revealed the amount of pocket money held by each student in a sample o students from…

A: The number of observations is 16.

Q: Consider the following sample data: 6, 10, 4, 3, 7, 9, 21, and 14. What is the variance? Select…

A: For the given data   What is the variance?

Q: Find the expected value E(X) of the following data.Round your answer to one decimal place.

A: The probability distribution of random variable x is given.

Q: When Brooklyn commutes to work, the amount of time it takes her to arrive is normally distributed…

A: Given that.   X~N( μ , ?^2 )   μ=54     , ?=4   Z-score =( x - μ )/?

Q: 7. The financial aid director of a college believes that at least 30% of the students are receiving…

A: Given  Population proportion p=0.30, n=sample size=60, n=sample size=60, x=15, level of significance…

Q: It has been determined that 37 out of 100 adult Americans that did not attend college believe in…

A: There are two independent samples which follows normal distribution. We have to test whether the…

Q: Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain…

A: From the above information Part 1 a. Use a 0.05 significance level to test the claim that those…

Q: According to a study of political prisoners, the mean duration of imprisonment for 37 prisoners with…

A: In the given scenario, we need to find the 95% confidence interval for the mean duration of chronic…

Q: d) We conduct a regression of life on school, reg1, reg2, reg3, reg4, loggdp. The regression output…

A: d) From the given output, the regression equation can be written as follows: life=34.18484+0.4186637…

Q: Q3: If P(X= x) = a 8(x) + b 8(x + 1); then a + b = A) 0.5 B) 0.3 C) 0.4 D) 1 E) None

A: Given: P(X=x)=aδ(x)+bδ(x+1)

Q: A University Director of Studies records the number of students failing the examinations of several…

A: Range is the difference between maximum observation and minimum observation.  Range= Max-Min  Here…

Q: a. Assuming that head circumferences for infants are normally distributed with standard deviation…

A: From given data : n=13, x=34.8,σ=1.6

Q: A random sample of 732 judges found that 405 were introverts. Construct a 95%  confidence interval…

A: Given: Sample size, n is 732 The number of introverts, x is 405 Confidence level is 95%

Q: Consider the following sample with 20 observations: 1   1   5   7   9   11   11   14   14   19 20…

A: Sol:- Interquartile RangeThe interquartile range is the difference of the first and third…

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 12…

A: From the provided information, Sample size (n) = 16 Level of significance (α) = 0.05

Q: According to a leasing firm's reports, the mean number of miles driven annually in its leased cars…

A: Given Population mean μ=12940, standard deviations σ=2920, n=50, sample mean x̄=12340, level of…

Q: The value obtained for the test statistic, z, in a one-mean ztest is given. Also given is whether…

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Q: biologist looked at the relationship between humb of seeds a plant produces and the percent of those…

A: x y xi-x yi-y (xi-x)2 (yi-y)2 (xi-x)(yi-y) 636956594061414545 47.544.54760.57354.569.556.570.5…