2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a study with 97.25% precision. How many samples must be taken?" Solutions:

Q: Given a marginal p.m.f of x: f₁(x) = and a marginal p.m.f of y: f₂(y) = {2 X & Y are stochastically…

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Q: 2N22 5 5 5 5 & F & F 5 ∞ - 202 236 215 192 184 224 208 238 206 197 169 169 182 158 127 151 149 197…

A: Mean, x̄= ΣXi/n  Here sample size is n= 24 x̄= 499/24  =20.79167   Kurtosis= m4/m22 m4= Σ(Xi-x̄)4/n…

Q: 1.- The scores for a Prestatistics exam are given: 90 79 73 61 76 93 33 87 15 49 87 36 e. Find the…

A: Given problem Given that   The scores for a Prestatistics exam are given : 90 79 73 61 76 93 33 87…

Q: Two dice were thrown 180 times, and at each throw the number X of sixes was recorded, with the…

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Q: Cardiovascular Disease The data in Table 1 are a sample of cholesterol levels taken from 24 hospital…

A: Mean is given by,  x̄= ΣXi/Σn =499/24 = 20.79167

Q: wo samples are taken with the following numbers of successes and sample sizes x1 = 33 x2 = 31 n1 =…

A: Solution-: Given: n1=51, n2=72, x1=33, x2=31, c=0.95 We want to find 95% confidence interval.

Q: Direction: Answer the following items. A nationwide survey found out that the average time that…

A: Solution: Given information: μ= 10.5 hours Population mean n= 28 Sample size x= 8.5 hours Sample…

Q: Your twenty observations of Dr. Knowitall reveal the following information. Assume that the estimate…

A: z value for 99% confidence level = 1.645 e = 8% = 0.08

Q: P(z>1.2)

A: Given problem Given that   P(z>1.2)   Ans) P( z>1.2 ) is, = 1 - P( z ≤ 1.2 )

Q: QUESTION 1 The measurement scale that allocates values to variables based on their relative ranking…

A: Given that  1.. The measurement scale that allocates values to variables based on their relative…

Q: 1 f(0) 0 > 1. 02¹ ple {₁,...,n}, find the posterior distribution (in =

A: Given: X~Unifθ,θ+1fprior θ =1θ2         θ>1

Q: 12.5 As a result of experiments with two devices A and B, one finds the probability of observing a…

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Q: The average weight of 6 people in an elevator is 173 pounds. A 7th person gets on and now the…

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Q: Thanks to an initiative to recruit top students, an administrator at a college claims that this…

A: GivenMean(x)=118standard deviation(s)=13sample size(n)=11significance level = 0.10

Q: Q18  Determine which of the four levels of measurement ( nominal, ordinal , interval, ratio ratio)…

A: Given  Determine which of the four levels of measurement ( nominal, ordinal , interval, ratio ratio)…

Q: How would figure out this problem n=12, p=0.6, x= 10 binomial probability experiment with the given…

A: Given: n=12 p=0.6 x=10

Q: TU.0 7.0 Figure 3 10.0 0.4 Figure 4 Answer the following questions about the relationships between…

A: Figure (4). Shows that there is low correlation between m and n. Which means it's close to 0.  For…

Q: DO

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Q: Identify all possible outliers from the following data set: 0.1 4 5.2 4.75 6.1 5 17.2 3.9 7.8

A: Given problem Given that   We have to find all possible outliers from the following data set. 0.1,…

Q: 2. A teacher wants to test three different teaching methods: I, II and III. To do this, he formed…

A: The question is based on a one way ANOVA Given :

Q: Regression The data below are claimed to relate to four experiments, which were conducted with the…

A: Given information: As per guidelines we will solve the first question only, please repost other…

Q: sed on a two-tailed t-test,what will be the conclusion of the significance test for this correlation…

A: From there results of first question, the correlation value is 0.97.

Q: 95 152 149 124 96 156 111 88 105 130 103 124 74 132 168 98 74 133 99 119 114 140 106 74

A: Arranging the given data set into ascending order, 74, 74, 74, 88, 95, 96, 98, 99, 103, 105, 106,…

Q: Suppose that the annual rate of return for a common biotechnology stock is normally distributed with…

A: Given Mean=4.5 Standard deviations 4

Q: Do the poor spend the same amount of time in the shower as the rich? The results of a survey asking…

A: Given n1=11 n2=12

Q: Let X₁, X2,..., X, be independent random variables, each of which obeys Poisson's law am P(X, m) e-a…

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Q: Problem 7 - (part 1) What is the sum of the mean, median, and mode of these data? 4, 5, 6, 10, 10…

A: Give problem Given that   Given data 4, 5, 6, 10, 10 Mean : The formula is, = ( 4 + 5 + 6 + 10 +…

Q: Find the proportion of Normally distributed observations with a zz-score above -2.84. Give your…

A: Given the proportion of Normally distributed observations with a z-score above -2.84

Q: What are similarities of Interrupted Time Series and Regression Discontinuity? What are some…

A: Please find the explanation below. Thank you

Q: 9.- American women's height are approximately normally distributed with mean 63.8 inches and…

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Q: 2. Question: The lifespan of wafer processing machines used by a semiconductor manufacturing company…

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Q: Consider the results of a Statistics final exam taken by 100 students, as given in the following…

A: Given:   Grade Frequency >50 15 50-59 10 60-69 30 70-79 25 80-89 15 90-100 5

Q: 2. Consider the five data points in the table below. X 38 30 34 36 40 40 y 35 38 41 a. Construct a…

A: Given: Sample size n = 5 Formula Used: The equation of regression line is; Y = a + bX b is slope a…

Q: Which of the following characteristics tends to increase the likelihood that a clear difference…

A: Hypothesis test for the difference between two sample means can either be achieved by z-test or…

Q: 8. A certain health magazine stated * that 14% of men said they used exercise to reduce stress. At…

A: Since you have posted multiple questions, as per our guidelines, we have provided answer for first…

Q: If AA and BB are two mutually exclusive events with P(A)=0.35P(A)=0.35 and P(B)=0.55P(B)=0.55, find…

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Q: works more hours, •When employee an Employee Hours Paycheck (XY) (ху) (X²) 1 3 90,000 30,000 9…

A: Correlation coefficient is given by,   From the above calculation, Σx= 14 Σy= 140000 Σxy=700000 Σx2=…

Q: normal with a a. What are the chances that the investment will result in a negative return? b. What…

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Q: tutu In physiology, an objective measure of aerobic fitness is how efficiently the body can absorb…

A: Given information: Shapiro Wilk Normality test data: restpulse_male W = 0.94898, p-value =…

Q: Solve for the standard deviation of x and y ●Determine it’s correlation and covariance. covariance=…

A: For the given data, we need to calculate standard deviation of x & y. Also, calculate covariance…

Q: The common fruit fly is the most studied organism in genetic research because it is small, easy to…

A: From the provided information, Mean (µ) = 0.800 mm Standard deviation (σ) = 0.078 mm X~N (0.800,…

Q: 16. Mr. Sy asserts that fewer than 5% of the bulbs that he sells are defective. Suppose 300 bulbs…

A: Given,sample size(n)=300and X=10α=0.01H0:P≥0.05H1:P<0.05

Q: As a relative proportion, which survey question showed the MOST difference in the responses given…

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Q: 5. Find and shade the required area. (a) Find the area under the normal curve from z=1.12 to…

A: Here we have to find and shade the required area a) The area under the normal curve from z= 1.12 to…

Q: TUS 52 Exercise: Suppose X₁ and X2 are independent N(u, 1) random variables, for an unknown…

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Q: Is it reasonable to conclude that the rat with the supplement is smarter than the vast majority of…

A: From part (a), we can see that the probability is approximately 2.28% which is extremely low. From…

Q: Recall that a U[a, b] distributed random variable X has the pdf for a ≤ x < b. Given that a = 5,b=…

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Q: A marriage counselor has traditionally seen that the proportion p of all married couples for whom…

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Q: Fill in the missing values to make the following matrix a transition matrix for a Markov chain 0.92…

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Q: 2. Suppose that we are testing Ho = o versus H₁>po. Calculate the p-value for the following observed…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…