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Q: Jonah buys a television that costs $445. Sales tax in his state is 7 percent. Which of the following…
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Q: Marks Number of Students 8. 4 10 9. 6. 6. 8. 4. 9. 3 If the average marks for all the fifty students…
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Q: A programmer plans to develop a new software system. In planning for the operating system that he…
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Q: 27. Payton ran l miles on Monday, 2 miles on 7. miles on Wednesday. What is the 8. Tuesday, and 1-…
A: topic -median of distance median is the value in the middle when data is arranged in ascending or…
Q: A restaurant server claims that 49% of the time he leaves candy with the bill, the customer "tips…
A: Given : n = 5 p = 0.49
Q: with midrange equals to 13. 4.33 3.12 9.73 2.08
A: Solution
Q: Twenty years ago, 52%of parents of children in high school felt it was a serious problem that high…
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Q: A medical device company knows that the percentage of patients experiencing injection-site reactions…
A: It is given that p=0.11 i.e. 11%.
Q: The percentage of hands that are winning blackjack hands is enter your response here%
A: Since we have calculated probability of selecting a black jack hand is P(Black Jack hand) = 64/1326…
Q: 6. To test the claim that the proportion is less than 0.25, you would use a -tailed test.
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Q: 4. Nina had the following positive numbers: 7x, 12x, 5x, 8x, x and 4x where x is a positive integer.…
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Q: Larry is a 62% free-throw shooter, that is to say that anytime Larry attempts a free-throw, there is…
A: Given data, p=62% =0.62 n=70 Mean=?
Q: A salesperson notices when they share testimonials from current and past clients with their…
A: Given data: A salesperson notices when they share testimonials from current and past clients with…
Q: A programmer plans to develop a new software system. In planning for the operating system that he…
A: Solution: B. From the given information, confidence level is 0.99, p=0.92 and E=0.02.
Q: A business executive asks his administrative assistant to call three different travel agents and…
A: Excel Command for finding p-value: “=F.DIST.RT(F test statistic, Degrees of freedom for Airlines,…
Q: (c) What percentage of students play video games for less than 64 hr per week? of the students play…
A: The following frequency distribution table is provided. Number of hours Frequency (f) 1.0-7.9…
Q: Two quantities are related, as shown in the table: ку 2,3) 4,4) (6,5) (8,6)
A: Topic:- equation of line
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Q: 4 s2+4s+20) (b) s2+35)
A: The solution is given as
Q: The Mean of X is 5 and its SD is 3. The Mean of Y is -2 and its SD is 6. Find A and B, both greater…
A: Given that X follows Normal(mean=5, SD=3) Then Z=(X-mean)/SD= (X-5)/3 follows standard normal…
Q: he first 8 data points have mean 110.63. The second 78 data points have mean 3.02. What is the…
A: From the given information, Consider, n1=8, x1=110.63n2=78, x2=3.02
Q: company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant.…
A: Let A denotes the number of employees suffered lost time accidents last year and B denotes the…
Q: reminder, the mean of the differences in runtimes was 6.44 seconds, and the stand of the differences…
A: Given : Sample Size, n = 21 Sample Mean, x̄ = 6.44 sample standard…
Q: A company conducted a survey to see whether its new toothpaste was more popular with children or…
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Q: P(Z is between -1.20 and 1.15) = ✓ [Select] 0.7599 4 0.98257 0.1157 0.5833
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Q: State whether the following statement is true or false, and explain why. If the statement is false,…
A: let the average score be 'x'then after one year the score were down by 6%so, the score after one…
Q: Ronnel got the following grades for the third-grading period: 83 Chemistry Filipino English…
A: From the provided information, The data values are as follow: 83, 82, 78, 76, 80
Q: Suppose the mean of Group I is A and the mean of Group II is B. We combine Groups I and II to form…
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Q: 6TH GRADE MA MON There are 28 students in math class, 22 of the tudents passed a recent rest. What…
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Q: The cost, in millions of dollars, of a 30-second TV ad during the Super Bowl from 2015 to 2019 can…
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Q: 20, Which comparison is true? A. 4< V18 < 4.5 B. 4.5 < V18 < 5 C. 8.5< V18 < 9,5 D. 17 < V18 < 19
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Q: The mean of Fred's 6 test Scores is 86. His teacher will drop his lowest grade of 78. What is Fred's…
A: Given The mean of Fred's 6 test score is 86. His teacher will drop his lowest grade of 78. So we…
Q: 20% 9:Total Does the total in your percentage column equal 100%? If not, explain why you believe…
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Q: Twenty years ago, 51%of parents of children in high school felt it was a serious problem that high…
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Q: A SRS of 60 students was interviewed to determine the proportion of students who preferred the new…
A: n = 60 Number of success = 37
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A: Obtain the proportion of oil tankers that had spills. The proportion of oil tankers that had spills…
Q: 40. The donations from the residents of Fairway Forest toward the Virginia lung Association are…
A: Calculate Mode from the following data9,10,5,9,9,7,8,6,10,11
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A: here given , result from group of 10 BIRTHS from 10 different sets of parents x = number of girls…
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Q: 4. Nina had the following positive numbers: 7x, 12x, 5x, 8x, x and 4x where x is a positive integer.…
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Q: Right Trianglé continued 14. 15. 40 9. 12 13 17. 16. 35 20 37 20
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Q: d) a nurse and a teacher. e) A lawyer or someone earning between71,000 and 100,000. f) an accountant…
A: d) There are 50 nurses and 55 teachers.But there are no person who is both nurse and teacher. So the…
Q: Please explain this process: 49 7.760 Σ 7+1 10⁰ 49 = 3 1-7 3 10 ↑ n= P 16.33
A: The given expression is ∑n=1∞7n+110n=7·7101-710=4910310=493=16.33
Q: 1. Seb's Savermart has 12 female and 20 male employees. What is the ratio of female employees to…
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Q: An environmentalist wants to find out the fraction of all tankers that have spills each month..…
A: If x denotes the number of cases favorable to an event in a sample of size n, then the sample…
Q: Is 12 O er 12 bigger or smaller than 10 over 1
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Q: The pass result of fifty students who took up a class test is given below : Marks Number of Students…
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Q: Fifty students appeared in an examination. The result of the passed students are given below: Marks…
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Q: Twenty years ago, 47%of parents of children in high school felt it was a serious problem that high…
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Q: by all the participants was yu. The average number of questions answered correctly by the top 75% of…
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- Calculateaconfidenceinterval for the me-dian ofthe second population.Select your confidenc eleve land reportit with your answer.??When a man observed a sobriety checkpoint conducted by a police department, he saw 688 drivers were screened and 4 were arrested for driving while intoxocated Based on those results, we can estimate that P(w)=0.00581, where W denotes the event of screening a driver and getting someone who is intoxicated What does P(W) denote, and what is its value?When a man observed a sobriety checkpoint conducted by a police department, he saw 658 drivers were screened and 9 were arrested for driving while intoxicated. Based on those results, we can estimate that , where P(W )= 0.01368 denotes the event of screening a driver and getting someone who is intoxicated. What does P(W) denote, and what is its value?
- Assume that last year in a particular state with 700000 children there were 1471 children out of 32500 in a random sample who were diagnosed with Autism Spectrum Disorder. Nationally, 1 out of 88 children are diagnosed with ASD. Is there sufficient data to show that the incident rate of ASD is higher in that state than nationally? Test at the 1% level.Suppose that historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous 6 months, in a sample of 115 new-car buyers, 46 have traded in their old car. To determine whether the proportion of new car buyers that trade in their old car has statistically significantly decreased, what is the p-value? (please round your answer to 4 decimal places)Two different types of injection-moulding machines are used to form plastic parts. A part is considered defective if it has excessive shrinkage or is discoloured. Two random samples, each of size 300, are selected, and 13 defective parts are found in the sample from machine 1, and 8 defective parts are found in the sample from machine 2. Is it reasonable to conclude that both machines produce the same fraction of defective parts, using α = 0.05, find the value of zcalc? Please report your answer upto 2 decimal places.
- Assume that there is a 6% rate of disk filure in a year. a) If all your computer data storage is stored on a hard drive with a copy stored on a second hard disk drive, what is the probabiblity that during that year you can avoid catastrophe with at least one working drive? b) If copies of all your computer data are stored on three independent hard disk drives, what is the probablility that during a year you can avoid catastrophe with at least one working drive?Table 1 shows the total amount spent in Malaysia by tourists from Saudi Arabia and Japan from 2010 to 2019. Based on Table 1, at the 0.01 level of significance, can we conclude that tourists from Saudi Arabia spent less than those from Japan. Table 1: Amount spend by tourists from Saudi Arabia and Japan Year Saudi Arabia Jepun 2010 0.7 1.1 2011 0.7 1.1 2012 0.8 1.4 2013 0.8 1.5 2014 1.1 1.8 2015 1.0 1.6 2016 1.3 1.3 2017 1.2 1.2 2018 1.3 1.7 2019 1.4 2.3Assume that anxiety scores as measured by an anxiety assessment inventory arenormally distributed with μ = 20 and σ = 4. A sample of 4 patients who areundergoing treatment for anxiety is randomly selected, and their mean anxiety scoreX = 22. Is the average anxiety score from patients who are under treatmentsignificantly different from 20? Assume a = .10.
- Suppose that 2% of transactions in a region are fraudulent. Transactions are assumed to be independent of each other. Calculate with the help of the normal approximation that between 1000 More than 20 transactions are fraudulent. Show your work.efore 1918, approximately 55% of the wolves in a region were male, and 45% were female. However, cattle ranchers in this area have made a determined effort to exterminate wolves. From 1918 to the present, approximately 70% of wolves in the region are male, and 30% are female. Biologists suspect that male wolves are more likely than females to return to an area where the population has been greatly reduced. (Round your answers to three decimal places.) (a) Before 1918, in a random sample of 11 wolves spotted in the region, what is the probability that 8 or more were male?What is the probability that 8 or more were female?What is the probability that fewer than 5 were female?(b) For the period from 1918 to the present, in a random sample of 11 wolves spotted in the region, what is the probability that 8 or more were male?What is the probability that 8 or more were female?What is the probability that fewer than 5 were female?Suppose the incidence rate of myocardial infarction (MI) was 5 per 1000 among 45- to 54-year-old men in 2000. To look at changes in incidence over time, 5000 men in this age group were followed for 1 year starting in 2010. Fifteen new cases of MI were found. Suppose that 25% of patients with MI in 2000 died within 24 hours. This proportion is called the 24-hour case-fatality rate. 7.14: Of the 15 new MI cases in the preceding study, 5 died within 24 hours. Test whether the 24-hour casefatality rate changed from 2000 to 2010 7.15: Suppose we eventually plan to accumulate 50 MI cases during the period 2010–2015. Assume that the 24-hour case-fatality rate is truly 20% during this period. How much power would such a study have in distinguishing between case-fatality rates in 2000 and 2010–2015 if a two-sided test with significance level .05 is planned? 7.16: How large a sample is needed in Problem 7.15 to achieve 90% power?