7. What percentage suffered for fewer than 61 hours?

Q: Two samples are taken with the following sample means, sizes, and standard deviations x¯1 = 40 x¯2 =…

A:

Q: - The p-value = (Please show your answer to 4 decimal places.)

A: Given that  Sample size n =11 Population mean =77

Q: 1. Bob made 116 on his accounting midterm and 82 on his biology midterm. For the accounting midterm,…

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Q: Random samples of 125 are taken from a population where μ = 170. 49.2% of all sample means were…

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Q: Estimate the population regression model: In(TestScore) - Bo+Biln(STR) + B2lncome, + Balunch, + u,…

A: The correct answer is "Option d".

Q: What is the critical value utilizing the level of significance and the numerator and denominator…

A: here given, s1  = 1.7 n1 = 20s2 = 1.2n2 = 25

Q: The indices for the year 1985 with 1975 as the base year were as follows : Year : 1975 1980 1985…

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Q: A factory produces bars of chocolate that follow a Normal Distribution with a mean weight of 70g and…

A: Let X denote the bar weights. Given that X follows N(mean = 70, variance = 9), then Z = (X -…

Q: A researcher is interested in investigating the relationship between sugar consumption and weight…

A: The objective is to determine Treatment in the given experiment.

Q: year Calculate the mode.

A: We have given that the data represent the number of paid public holidays per year from selected 9…

Q: Find the area under the standard normal curve to the left of z=−1.44z=−1.44. Round your answer to…

A: Given: Z = -1.44

Q: Answer the problem and show your solution: The IQs of Grade 11 students in Pulot National High…

A: Solution-: Given: μ=98,σ=8 We find, P( score of grade 11 students is higher than 110)=?

Q: 3 The mass of packages from a particular machine are normally distributed with a mean of 200g and…

A: Given that : u = 200 g  ?2 = 9 g  By using standard normal distribution to solve this problem.

Q: Some fruit are sold whose weights follow a normal distribution such that X-N(90, 16) If the heaviest…

A: (9) X~N(μ, σ2) = X~N(90, 16)  Let X be minimum weight of large fruit from normal distribution with…

Q: We’ll say that a permutation T = (T(1),.….., T(n)) contains a swap if there exist i, je{1,..,n} so…

A: a) Let we take n > 1. Let Xi be a random variable if i is a partner in a swap or not. The values…

Q: I need help solving part F of this problem. X= 30, 40, 50, 60, 70 Y= 82, 77, 72, 64, 52 I found…

A: Given that, X= 30, 40, 50, 60, 70 Y= 82, 77, 72, 64, 52 With the estimated line of least squares…

Q: Suppose that the random variable z, shown below, represents the number times. P(z) represents the…

A: From the provided information, x P (x) 0 0.2686 1 0.264 2 0.2633 3…

Q: . Answer the problems completely. Round off your answers up

A: 5. Let Y be the days and X be the Index. Excel Procedure: Enter X and Y data in Excel Go to Data…

Q: Obtain the exponential trend equation and the trend values for the following data. 1994 1995 1996…

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Q: Suppose that historically, 66% residents in an apartment building own at least one pet. If there are…

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Q: The amount of time spent in prison has a mean of 5.2 years and a standard deviation of 1.3 years. A…

A: Solution-: Given: μ=5.2,σ=1.3,n=16 We determine the z crit value =?

Q: Five hundred first year students at a state university were classified according to both their…

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Q: Use the currency exchange rates in the table for the following question. Dollars per Foreign 1.414…

A: Given that

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A: The objective is to find the research method used when two researchers studied the relationship…

Q: Let X1, X2, X3… X20 be a random sample from a distribution with mean 8 and variance 5. Find the mean…

A: Solution-: Given: μ=8,σ2=5  Let, x1,x2,........x20 be a random sample from a distribution with mean…

Q: Explain the terms relative risk, odds ratio, and Pearson correlational coefficient and explain when…

A: Relative Risk (RR) Odds Ratio (OR) & Pearson Correlational Coefficient

Q: I want to assess whether different types of movies increase viewers’ stress response. I recruit 24…

A: For the given data write the null and alternative hypotheses

Q: Calculate the range.

A: Range  = maximum - minimum

Q: You are conducting a hypothesis test about income where the research (alternative) hypothesis is…

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Q: chapter 8, question  a simple random sample size n=13 is obtained from a population u=66 and q=15…

A: Given that ; μ = 66 ? = 15  n = 13 By using standard normal distribution to solve this problem.

Q: 1. A sample of the final exam scores in a large introductory math course is as follows 85 60 65 7o…

A: Data : 85,60,65,70,84,75,42,50,75,37,80,73,88,89,85,80,96,99,68,95

Q: A claim is made that 60.4% of college students earn their undergraduate degree in four years. A…

A: We have given the following statement A claim is made that 60.4% of college students earn their…

Q: Reliability is the degree to which a test is consistent and stable in measuring what it is intended…

A: Disclaimer : Since you have asked multiple question, we will solve the first question for you. If…

Q: A tire company claims that their new tires will have an average life of 122000 miles. A consumer…

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Q: The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0…

A: X follow the uniform distribution i.e. u ( 50.0 , 52.0)  By using the uniform distribution we find…

Q: The following table giyes the total number of U.S adults with diabetes for selected years from 2010…

A: Note: As per the guidelines, we are allowed to solve first three sub parts at a time. Kindly repost…

Q: In Exercises 31 and 32, check that the conditions for carrying out a one-sample z test for the…

A: The random variable students typically walk to school follows normal distribution. We have to find…

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Q: The weight of all cans of coffee has a standard deviation of 0.39 ounces. A sample of 14 cans of…

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Q: Using z-scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 50…

A: Given

Q: 10 Some fruit are sold whose weights follow a normal distribution such that X~N(80, 15) If the…

A: We have given that Mean = 80 Standard deviation = 3.87 Variance = 15

Q: The average time for a one way trip for a student to go to school is 24 minutes with a standard…

A:

Q: 1 Student exam results as a percentage are modelled by a Normal distributionwhere X- N(75, 100).…

A: (1) X~N(μ, σ2) = X~N(75, 100)  Let X be the random variable from normal distribution with mean (μ) =…

Q: Q/The Pollowing time series nows the anhual Production oh one of the Pactories the Year 200 6 2007…

A: The given data set is: .

Q: An article in Air and Waste ["Update on Ozone Trends in California's South Coast Air Basin" (Vol.…

A: Given: Days Index 91 16.7 105 17.1 106 18.2 108 18.1 88 17.2 91 18.2 58 16 82…

Q: You wish to test the following claim (HaHa) at a significance level of α=0.001 Ho:p1=p2…

A: For the given data Find the test statistic =  ? p-value = ? The p-value is...  decision to... final…

Q: 1. A focus group of 4 members is to be randomly selected from a medical team consisting of 8 doctors…

A: Number of doctors  = 8 Number of technicians = 6 Number of paramedics = 5 Number of nurses = 7

Q: The population of a country follows a normal distribution with mean height 175 cm and standard…

A: The random variable height follows normal distribution. We have to find the probability that a…

Q: the 85.7% confidence interval estimate for p was (0.14, 0.16). Find p′ and ME.

A:

Q: Health insurers are beginning to offer telemedicine services online that replace the common office…

A: Given,sample size(n)=20degrees of freedom(df)=n-1df=20-1=19α=1-0.95=0.05α2=0.025t0.025(19)=2.093…