In a 2 colour spinner, the probability of spinning red is 4 times the probability of spinning green. If you spin this spinner 17 times. What is the expected number of times it will land on green?

Q: It has been claimed that 71% of all adults use their cell phones within an hour of going to bed.…

A: From the provided information, The claim is that 71% of all adults use their cell phones within an…

Q: 4. obtain follows Poobability of each class os $(zim)-$(zi) For last class 1-(zi)

A: Grouped frequency distribution is useful to summarize long data.

Q: 11. It has been claimed that 71% of all adults use their cell phones within an hour of going to bed.…

A:

Q: "The scores of Grade 11 students in an achievement test in mathematics are normally distributed with…

A: Solution

Q: 3. Suppose researchers are interested in estimating the prevalence of HIV in a population of…

A: Given Data : population proportion,p = 0.094 sample size n = 127

Q: Q1: 1-A researcher has collected the following sample data Calculate coffined of variation, which is…

A: We have given the following data  and we have to find out the coefficient of variation.

Q: Example 15.9 Given the following values, find the expected value of X when Y = 12: X series Y series…

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Q: Example 15.11 The following table shows the marks obtained in two tests by 10 students: Marks in Ist…

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Q: Q 3/ In a certain city, the number of power outages per month is a random variable, having a…

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Q: If the character shows you the card 4, what is the probability that the second card will be higher…

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Solution-: Given: σ=51.6,M.E.=E=2.5,α=0.02 We want to find how large of a sample size is required?…

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Q: companies. Company A offers a starting salary with mean µ = $31,000 and σ = $1000. Company B offers…

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

Q: 8.12 Crawling babies, Part I. A study conducted at the University of Denver investigated whether…

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Q: Angela recently discovered that the proportion of cat owners in Scranton, Pennsylvania, is 0.27.…

A: In question, Given that Angela recently discovered that the proportion of cat owners in Scranton,…

Q: "piu mcun Will be between 72 and 74 years? What is the probability that the sample mean will be…

A: Here AS PER INSTRUCTION I HAVE PREFERRED HAND WRITTEN SOLUTION

Q: Given a normally distributed population with a mean of 100 and variance 100, find f) P(90 Sx S 115)…

A: Let X be the random variable from normal distribution with mean (μ) = 100, variance (σ2)= 100 Then,…

Q: What is the probability that: 1. X is at least 4? 2. X is more than 4? 3. X is less thàn 3? 4. X is…

A: Here AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPARTS  Here use given pmf of x

Q: Example 15.12 On the basics of the following data, determine regression of Y on X: ΣΥ-498ΣΧ4903…

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Q: a distribution with u= 11.5 and o-2.5 If this distribution can be approximated closely with normal…

A: Let X be the random variable from normal distribution with mean (μ) = 11.5 and standard deviation…

Q: Q1. The test scores ona test were recorded for 8 students as follows: 71, 93, 91, 86, 75, 73, 86, 82…

A: The number of scores is 8.

Q: r= 8/15. Find (i) the regression coefficient of X on Y (ii) the regression coefficient of Y on X…

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Q: Thelma and Louise each use their sample data to construct a confidence interval.  Thelma’s interval…

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Q: In a study of the potential role of drug therapy in the treatment of bladder instability in older…

A: In the given problem we have given that, X1: number of persons who received Placebo treatment = 124…

Q: According to law enforcement records, the proportion of all drivers who have received at least one…

A: From the provided information, Mean (µ) = 0.20 Standard deviation (σ) = 0.024 X~N (0.20, 0.024)

Q: P(z) 0.3 1 0.3 2 0.15 3 0.25 Find the mean of this probability distribution. Round your answer to…

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Q: A restaurant is planning to remove fried chicken from the menu. Sales are said to have fallen below…

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Q: Suppose that textbook weights are normally distributed. You measure 50 textbooks' weights, and find…

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A: Given that, a vending machine automatically pours soft drinks into cups. The amount of soft drink…

Q: 1. For a 95% confidence level, what are the critical values fora one-tailed test? 2. For a 99%…

A: Given that  95% confidence level and 99% confidence level.

Q: 5. It is claimed that the proportion of high school athletes who go on to play sports in college is…

A: Given,sample proportion(p^)=0.07population proportion(P)=0.08P-value=0.06α=0.05

Q: tossing a die four times, the possibility of getting the 1 only twice

A: Here given, tossing a die four times n = 4  Here on die probability of getting each of number = 1/6…

Q: A recent random poll asked 2,596 adults nationwide ,is discrimination against people based on their…

A: Given that the sample of 2596 adults. That is, the sample size is n=2596. The sample proportion of…

Q: . A wildlife researcher is interested in predicting an alligator’s weight (in pounds) based on its…

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

A: Number of choclate chip cookies = 5 Number of peanut butter cookies = 7 Number of sugar cookies = 5…

Q: EXAMPLE :- How many 3 digits number can be formed using digits 1,6,8,9,3,7 without repeating any…

A: In question,  We'll find that in how many ways a three digits number can be formed using 1, 6, 8, 9,…

Q: (10) Find the indicated probability. As a prize for winning a contest, the contestant is blindfolded…

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Q: following probability model shows the number of cars owned by American households, along with the…

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Q: 2. The STATISTIC in the study is O The average salary the thirty eight nurses in San Francisco make…

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Q: The partial credibility premium is calculated as 706 for 400 observations with mean loss of 600. It…

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Q: 10. You want to estimate the proportion of all college students who traveled during spring break.…

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Q: Researchers interested in lead exposure due to car exhaust sampled the blood of 52 police officers…

A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Q 2/ In a certain city, the number of power outages per month is a random variable, having a…

A: Given,n=22p=0.7mean(μ)=npmean(μ)=22×0.7=15.4standard deviation(σ)=22×0.7×1-0.7standard…

Q: The residual is the horizontal distance between the fitted and actual value (y). True False

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Q: Which is the correct null hypothesis of the claim below? “Students take an average of less than five…

A: Given that,  Students take an average of less than five years to graduate from college.  mu=5…

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Q: In a recent study 3 , n = 2006 randomly selected US adults (age 18 or older) were asked to give the…

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Q: ind a 87% confidence interval for the difference in scores depending on the prenatal cocaine…

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Q: A statistics instructor randomly selected four bags of​ oranges, each bag labeled 10​ pounds, and…

A: Given X-bar=9.45 n=4