A poll of 2,198 randomly selected adults showed that 86% of them own cell phones. The technology display below results from a test of the claim that 95% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test of p = 0.95 vs p *0.95 Sample X N 1 1885 2,198 Sample p 0.857598 95% CI (0.842988,0.872207) Z-Value - 19.88 P-Value 0.000

Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical​ trials,…

A: Solution-: Given: n=5797,x=151,P0=0.03,α=0.10 We want to  Part-1: Identify the null and alternative…

Q: A certain drug is used to treat asthma. In a clinical trial of the​ drug, 16 of 277 treated subjects…

A: 1 The claim is p<0.1. The hypotheses are H0:P=0.1 H0:P<0.1   The test is left tailed.

Q: Problem 3. Consider a very large random sample of (Yi, Xi, Zi, Qi), where Yi = Bo+ BıXi+Ui, = 0.9,…

A: Given: Consider a very large random sample of (Yi, Xi, Zi, Qi), where Y; = + 3X+Ui, and Zi and Qi…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 256.9…

A: given data,normal distribution μ=256.9σ=63.6according to emperical rule 68% , 95% and 99.7 % data…

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

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Q: A waiter believes the distribution of his tips has a model that is slightly skewed to the right,…

A: Given data: Mean = $9.70 Standard deviation = $4.60 Sample size = 40

Q: A researcher claims that 45% of U.S. adults think that the IRS is not aggressive enough in pursuing…

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Q: Question 3 What is the expected value of x?

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Q: At the campus-wide meeting, the president of a community college claims that more than 51% of all…

A: Solution-: Given: n=128,x=74,P0=0.51,α=0.01 We want to the president's claim at the 0.01 level of…

Q: Now Identify the following critical values:   za/2 99% 99.5% 98% 84% 81%

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Q: 5. Let X₁, X2, X3, X4, X5 be a random sample of size 5 from the pdf 2x 82 ₁0 0. Suppose we want to…

A: It is given that X1, X2, …X5 be a random sample that follows the pdf  fx;θ=2xθ2, 0<x<θ The…

Q: uppose you want to estimate the proportion of employed adults who would continue working if they won…

A: given data, sample proportion p^=0.59 2E=0.3E=0.32=1.5CI=0.99α=1-0.99=0.01we have to find out the…

Q: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

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Q: Question * One hundred women with vaginal candida were given an oral antifungal, 100 were given…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: ne table. Drive-thru Restaurant C 242 34 A Order Accurate 337 Order Not Accurate 35 B 278 60 D 125…

A: Given Use the data in the following table, which lists drive-thru order accuracy at popular fast…

Q: A survey of 100 senior citizens was undertaken and it was found that 9 of them had the flu vaccine…

A: given data clim : p < 0.12n = 100x = 9α = 0.10p^ = xn = 9100 = 0.09

Q: A company claims that the mean weight per apple they ship is 120 grams with a standard deviation of…

A: From the provided information, Population standard deviation (σ) = 12 Sample mean (x̄) = 122.5…

Q: 1. Compute the coefficient of determination r2. Comment on the goodness of fit. 2. Compute the…

A: (1)   Use EXCEL to determine the regression equation.   EXCEL procedure:   Go to EXCEL Go to…

Q: What would a t-test look like?

A: A business researcher is gathering data to test the hypothesis about a single mean of population and…

Q: Use the given data set to complete parts (a) through (c) below. (Use a = 0.05.) 10 7.47 X y O A.…

A: Given that: x y 10 7.47 8 6.46 13 12.73 9 7.11 11 7.82 14 8.84 6 6.08 4 5.39…

Q: Consider a sample of 51 football games, where 29 of them were won by the home team. Use a 0.10…

A: given data, n=51x=29p^=xn =2951 =0.5686α=0.10claim that the probability that the home team wins is…

Q: na hypothesis test, the p-value was calculated as 0.025. If the level of significance is, a = 0.05,…

A: From the given information, the p-value is 0.025.

Q: In a single throw of two dice, find the probability that neither a doublet nor a total of 8 will…

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Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A: given data, claim:p≠0.30n=30030% owns cat p^=0.30α=0.10we have to complete hypotheisis for the given…

Q: Assume that a procedure yields a binomial distribution with n = 763 trials and the probability of…

A: From given data we have : sample size = n = 763 probability of success = p = ( 4 / 15 ) =0.2667

Q: Exhibit 15-4 a. y Bo+ Bixi+B2x2 tệ b. E()-Po+By c. ỹ bo+bị xi+ by Xu d. E(y) Bo+B1x1 + B₂x2 Refer to…

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Q: Below you are given a partial Excel output based on a sample of 8 observations. ANOVA Regression…

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Q: The Highway Safety Department wants to study the driving habits of individuals. A sample of 81 cars…

A: Given information Sample size (n) = 81 Sample mean x̅ = 67 mph Standard deviation (s) = 9 mph…

Q: A safety engineer feels that 30% of failure of employees to follow instru industrial accidents…

A: Given, A safety engineer feels that30% of all industrial accidents in her plant are caused by the…

Q: According to the CDC national center for health statistics, about 42.4% of adult Americans fit the…

A: given data, p=0.424n=200np=0.424*200=84.8nq=(1-0.424)*200=115.2 here np and nq≥5so we can assume…

Q: Using the linear correlation coefficient found in the previous step, determine whether there is…

A: From the results, the correlation coefficient is 0.818.

Q: Suppose we conduct a simple statistical experiment. We flip a coin one time. The coin flip can have…

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Q: What is the maximum error one can expect to make with prob 0.90 when using the mean of a random…

A: Solution: Given that , n=64 Confidence level=0.90  1-α=0.90α=0.10and σ2=2.56 hence σ=1.6 Find margin…

Q: Researchers were interested in assessing the effects of a new treatment was assessed in all…

A: Calculation of mean and variances for each  groups: For 0 Weeks: sample size (n1) = 5 sample mean…

Q: A vital statistics record shows that the population of a certain city in the year 2021 was 1,000,000…

A: Given: Total population of the city = 1000,000 Number of diabetes patients = 6000 Total number of…

Q: The amount of time that a surveillance camera will run without having to be reset is a r.v. X having…

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Q: Various doses of a poisonous substance were given to groups of 25 mice and the following results…

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Q: The mean of a national test is known to be 275 with a standard deviation of 7.  A group of 10…

A: GivenMean(μ)=275standard deviation(σ)=7Given data set is 260, 258, 277, 290, 254, 268, 270, 242,…

Q: A Department of Mathematics at a University claims in an advertisement that the mean math SAT cores…

A: Solution: Given information: n=16 Sample size μ=600 Population mean σ= 15 Population standard…

Q: The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

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Q: The joint p.d.f. of the r.v.'s X and Y is given by fx,y (x, y) = (x + y²), 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0,…

A: The joint probability density function is, f(x,y)=65(x+y2); 0≤x≤1,0≤y≤1       0       ; otherwise…

Q: In a study of the accuracy of fast food​ drive-through orders, one restaurant had 31 orders that…

A: Given,n=355x=31 and α=0.1

Q: A hospital receives a pharmaceutical delivery each morning at a time that varies uniformly between…

A: Let X :A hospital receives a pharmaceutical delivery each morning at a time

Q: 2. A randomly selected 580 employed adults with 464 of them saying they are satisfied with their…

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Q: A poll of 2,096 randomly selected adults showed that 91​% of them own cell phones. The technology…

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Q: Sketch the area under the standard normal curve over the indicated interval and find the specified…

A: Explanation: The area between Z = 1.44 and Z = 2.11 is = P(1.44 <Z< 2.11) P(1.44 <Z<…

Q: Problem 3 There are two primary means to drill holes in rock: dry drilling and wet drilling. With…

A: Given that: Confidence level = 95% Dry dilling Wet drilling 7.27 6.07 9.65 5.49 9.04 7.62…

Q: Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury ( mmHg)…

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Q: a. Find the percentage of men meeting the height requirement. What does the result suggest about the…

A: Given Information: Women: Mean μ=63.8 Standard deviation σ=3.3 Men: Mean μ=67.5 Standard deviation…

Q: There are 26 balls marked with alphabetical order A to Z. What is the of selecting vowels listed…

A: given data  26 letters ball in alphabetical order: A to Z P(select vowel listed ball) = ?