(a) A study by the International Coffee Organisation found that persons aged 30 – 59 drank an average of 0.57 cups of coffee per day. Assuming that the sample size is 200 with a sample standard deviation of 0.4 cups, construct a 95% confidence interval for the population mean cup of coffee. Interpret your answer.  (b) A tourism magazine reports that over 80% of vacationers select a destination to vacation based on climate. From a sample of 200 vacationers, 142 reported that climate was the main reason for choosing a destination to vacation. Construct the 95% confidence interval for the population proportion of vacationers whose main reason for selecting a destination is based on climate. Interpret your answer.

Q: QUESTION 3 An analysis of vanillin in cocoa drink is recorded in table shown below. 1 2 3 4 5 6…

A:

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A: p₁-p₂ = 0.17-0.14 = 0.03 Confidence Level = 95 Significance Level = α = (100-95)% = 0.05…

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A: Assuming all other factors are unchanged, a decrease of sample size will have what result in the…

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A: Given that  Let X denotes compressive strength of concrete :  Xi: 2216 2237 2249 2204 2225 2301 2281…

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Q: Question 2 Grace Floral Shop claims that their average daily earnings is $497. An auditor wants to…

A: Null Hypothesis (H0): μ=497, the mean earning is $497Alternative Hypothesis (H1): μ<497, i.e the…

Q: use the confidence interval to give a conclusion of the test (if possible) and also state the…

A: The 90% confidence interval for difference in proportion p1 - p2 is given by (0.04, 0.19)

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A: Given information In random sample of 350 passengers and 190 are business class passengers. That is…

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Q: Question 1. ) Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how…

A: Given Data,n =34641x = 5865P =xn = 586534641=0.1693z- value at 99% confidence is zc =2.576

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A: A confidence interval refers to the probability that the population parameter will fall between a…

Q: Question 2 To estimate the average cost of maintaining houses in CA, a home warranty company…

A: Given Information:Sample SIze, n=200Mean, x¯ =$950Standard Deviation, σ =$550Confidence Level, c=99%…

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A: We has to find the circumstances where it is impossible to construct confidence interval

Q: Question 4 Calculate the single-sided upper bounded 90% confidence interval for the population…

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A: Given : For the single-sample t test, the confidence interval is centered around the:

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A: Givenn=200x=145

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A: (a) The sample mean is,

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Q: Question 1. In a study of vehicle speeds on a certain section of highway, a simple random sample of…

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Q: QUESTION 3 JamSoft, a computer games development company plans to roll out a new educational game…

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Q: Question 8 10 pts In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to…

A:

Q: Question 3: in a random sample of 870 Professors 270 use written resources for financial planning…

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A: Level of Significance: In testing of hypothesis, Level of Significance is the probability of…

Q: In a sample of 400 shops it was discovered that 136 of them sold carpets at below the list prices,…

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A: 95% confidence level α=1-0.95   =0.05zα2=1.96

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A:

Q: In a survey, 19 people were asked how much they spent on their child's last birthday gift. The…

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A: Given : Margin of error, ME = 5.0 population standard deviation, σ = 87.0…

Q: Question 4: ANOVA Five servings each of three different brands of processed meat were tested for fat…

A:

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A: given  n=250 x=80

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A:

Q: Question 7: For any confidence level C, the value of the sample proportion will always be considered…

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Q: + II 00 二 < co ト Question 33 !! One division of a large defense contractor manufactures…

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A: Given Information: Sample size n=1000 Sample mean x¯=10 Population standard deviation σ=2000

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.