A study found that 1 out of 200 adult males have green eyes. If a random sample of 400 adult males is​ obtained, is the sampling of the sample proportion of males that have green eyes approximately​ normal?   A. ​Yes, the sample size is greater than​ 10% of the population.   B. ​Yes, the sample was randomly selected   C. ​No, because np​ < 10   D. ​No, because nq​ < 10

Q: 4. A bank president claims that the median of debt-to-equity ratio of commercial loans provided is…

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Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

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Q: 8) For a random sample of size 64, find the probability that the sample mean will lie between…

A:

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: Given x1:new england crime rate x2 rocky mountain crime rate 3.3 3.9 3.9 4.1 4.2 4.5 4.1…

Q: Suppose it is reported that 66 % of people subscribe to a cable or satellite television service. You…

A: As per our guidelines, we are allowed to answer first three sub-parts . Thanks   population…

Q: After calculating Cohen’s d as a measure of effect size, this treatment would be classified as…

A: Given : n=64 , µ= 50 ,  σ = 12 , sample mean=M=52 Our aim is to find the given statement is TRUE of…

Q: A simple random sample of size n = 33 is obtained from a population with µ = 82 and σ = 23. What is…

A: Given that: Mean (µ) = 82 Standard deviation (σ) = 23 Sample size (n) = 33 X~N (82, 23)

Q: Q1) The percentage of NON Defective production is 10%. If a sample of 5 lap tops randomly been drawn…

A: Let, X = number of defective laptops. p= probability of defective = (1-10%)=(1-.10)=0.9 n=5

Q: . For a population with o = 16, how large a sample is necessary to have a standard error that is a.…

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Q: O Compute a 75% Chebyshev interval around the sample mean.

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Q: The following table is based on a random sample of people age 18 and older who said they were…

A: b) Given information:   Male Female Total Bringing a laptop 354 307 661 Not Bringing a laptop…

Q: If a sample of n = 4 scores is obtained from a population with u = 70 and o = 12, what is the…

A:

Q: In a survey of 180 females who recently completed high school, 80% were enrolled in college. In a…

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Q: A normal population has a mean of µ = 80 with σ = 20. a. If a single score is randomly selected…

A:

Q: Suppose a simple random sample of size n= 81 is obtained from a population with p=87 and o = 18. (a)…

A: a) Central Limit Theorem for mean: If a random sample of size n is taken from a population having…

Q: If random samples, each with n= 4 scores, are selected from a normal population with µ = 80 and o =…

A: The standard error for the distribution of sample means is the standard deviation of the sample…

Q: For a population with σ = 12, how large a sample is necessary to have a standard error that is:…

A: What the standard error gives in particular is an indication of the likely accuracy of the sample…

Q: or r=0.7789 and sample size=10, the corresponding t value is:"     2.512     3.512     3.034…

A: r = 0.7789 , n = 10

Q: Suppose a simple random sample of size n= 49 is obtained from a population that is skewed right with…

A:

Q: Several years ago, the Mars, Incorporated website reported the following percentages of the various…

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Q: In a survey of 500 drivers from the South, 408 wear a seat belt. In a survey of 370 drivers from the…

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Q: From the adult male population of four large cities, random samples of izes given below were taken…

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Q: 3. For a population with µ = 40 and o = 8, what is the z-score corresponding to X = 34?

A:

Q: H FEMALE AND MALES = 2752.                FIND P HAT f AND P HAT m , THE SAMPLE PROPORTIONS WHO HAVE…

A: Given: n=2752 The results for males and female are shown in table.   Yes No Total Females 726…

Q: A random sample of n1 = 16 communities in western Kansas gave the following information for people…

A: To calculate mean you just need to add all the data points in the sample and divide by sample size.…

Q: If a researcher reported for a single-sample t-test that t(17) = 2.90, p&lt;.02, how many subjects…

A: It is given that the test is single-sample t test and the degrees of freedom is 17.

Q: a. Compute thẻ a h. Petermine the sample standard deviation. u7 26 2. and

A: The table that shows the necessary calculations is shown below: x x−¯x (x−¯x)2 28 -10 100…

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A: Let X be the number of LWBS patients in this sample of size n. X ~ Binomial distribution with…

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A: The sample proportion is computed as follows,  The value of z at 98% confidence level is 2.326,…

Q: 1.The average length of a flight by regional airlines in the United States has been reported as 464…

A: Q. 1 Given : sample size(n)=30Sample mean(x)=479.6sample standard deviation(s)=42.8

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A: GivenThe defective rate is 1%i.e.,p=0.01sample size(n)=4400

Q: A large collection of 1-digit numbers should have about 50% odd and about 50% even because are odd…

A: The digits are given by,  S = {9,1,5,4,7,0,3,9,2,7,9,2,3,0,9,1,0,5,8,9,2,2,1,0,7,0,4,3,9,0} Given…

Q: 3. A researcher estimates that the average height of buildings in terms of the number of storey in…

A: In hypothesis testing, the value of the test statistic is calculated from the sample observations.…

Q: A simple random sample of 60 items from a population with o = 9 resulted in a sample mean of 31. If…

A: Given,n=60x¯=31σ=9

Q: Given a result of t (30) = 1.55 for a one-tailed paired samples t-test, What is the sample size?

A: It is given that t(30) =1.55. That is, t(df) = 1.55 Df = 30

Q: A study found 1 in 200 women do not shave. If a random sample of 400 women is obtained, is the…

A: We have to find the sampling distribution is normal or not..

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A: Given that the records of a light bulb manufacturer show that, when the manufacturing machinery is…

Q: In a sample with M = 40 and s = 8, what is the z-score corresponding to X = 38? %3D

A: Solution: 7. From the given information, M=40 and s=8.

Q: Suppose a simple random sample of size n= 81 is obtained from a population with u = 76 and o = 9.…

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Q: Given: σ = 0.9, δ = 3.25 − 3, α = 0.05 , Zα/2 = z0.025  What sample size would be required to…

A: δ = 3.25 − 3 Effect Size = (3.25 − 3) / 0.9 = 0.277

Q: A student organization is trying to decide whether or not to offer more movies on campus. They want…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: Introduction: Denote μ1, μ2 as the true mean crime rates in New England and Rocky Mountain,…

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

A:

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A:

Q: Suppose a simple random sample of size n=64 is obtained from a population with μ=83 and σ=16. ​(a)…

A: Given : μ = 83 σ = 16 n = 64 a) Sampling distribution of x. μx = 83 σx = 1664 σx = 2 X ~ N(μx=83,…

Q: With a sample size of 5, the P(t<x)=0.57P(t<x)=0.57. What is xx

A: Given Information: Sample size (n) = 5 P(t &lt; x) = 0.57 To find the value of X:   The area to the…

Q: in which the conditions of the f the sample che study has ever been carrie pnd

A: (a and b), but not (c and d)

Q: ) reported the domestic airfare for business travel for the current year and the previous year.…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: A sample of n = 10 automobiles was selected, and each was subjected to a 5-mph crash test. Denoting…

A: we have to find proportion  of success...

Q: In a survey of 250 males ages 20 to 24, 37% were neither in school nor working. In a survey of 240…

A: The Denote p1, p2 as the true population proportions of males and females ages 20 to 24 who were…