Find the sample size of American adults you would need to predict the results of an election with a confidence level of 90% and margin of error of .02. Remember to round appropriately. Make sure your final answer includes the sample size AND the proper units. Show your work on your scratch paper and number your scratch work with this question number.

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A: The mean for males is 3209.4 and standard deviation is 744.8, the mean for females is 3023.6 and…

Q: A) What is the probability that daily production is less than 27.3 liters? Use technology (not…

A: It is given that  Mean, μ = 36 Standard deviation, σ = 3.7 Z-Score, Z = ( X - μ )/σ

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A:

Q: 27 ΣΧ ~ Gamma i=1 2 = x²(2n). (a) Based on the fact that 2X1 X; ~ x²(2n), derive a (1 − a) × 100%…

A: Xi~exp(λ); i=1,2,...,n

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A: The answer is

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A:

Q: A physics class has 50 students. Of these, 16 students are physics majors and 14 students are…

A: given data  n(total)  50 n(physics) = 16 n(female) = 14 n(physics and female) = 6 P(female or…

Q: X is multivariate Gaussian with Hx= [6 8 ]and C₁ n 6 0 8 and and covariance matrix of Y 1 = x1 - x2…

A:

Q: 2* f(x)= e, x = 0, 1, 2, ..., and zero elsewhere, x! show that the moment generating function of X…

A:

Q: A population of values has a normal distribution with μ = 201.1 and o = 22.3. You intend to draw a…

A: a population of values has a normal distribution withmean(μ) = 201.1standard deviation(σ) =…

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A: Given that, A distribution center is considering three options for expansion. Since you have posted…

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 36…

A: We have given that   Mean(µ) = 36Standard deviations (σ) = 3.7X ~ N (µ, σ )= N(36, 3.7)

Q: Left ventricular mass (LVM) is an important risk factor for subsequent cardiovascular disease. A…

A: A sample data of 10 children was taken. Therefore, sample size n = 10 The baseline LVM and 4-years…

Q: A survey found that women's heights are normally distributed with mean 63.1 in. and standard…

A: GivenWomen's heights are normally distributed withMean(μ)=63.1standard deviation(σ)=3.4Men's heights…

Q: Compute the standard deviation for each set. Compute the standard deviation for set​ {9,9,9,9,9,9,9}

A: We have given that,  The data set is,   {9,9,9,9,9,9,9} Then,  We will find the standard deviation…

Q: The average number of times per week that John's 3 dogs wake him up at night because the dogs want…

A: GIVEN DATA,The average number of times per week that John's 3 dogs wake him up at night because the…

Q: You generated a histogram similar to the one below in the second assignment. Please explain what…

A: The histogram is given as: The histogram is generated in the second assignment. Need to explain:…

Q: How did you find the critical Value in regards to my z Table? If you could help me with figuring…

A: The level of significance is 5% and the test is right tailed.

Q: Assume you have an Exponential Distribution with parameter of 0.19 Find P(x > 6.1) round to the…

A: given data λ = 0.19exponential distribution P(x<X) =1- e-λxP(x>X) = e-λx

Q: 11. Consider a hypothesis test with a two-sided alternative hypothesis (not equals). If a confidence…

A: 11. The confidence levels are given to obtain the significance level.

Q: A tornado recently swept through central Oklahoma, causing millions of dollars of damage. Because of…

A: It is given that Sample size n = 34 Sample mean = 23750 Sample SD s = 2400 Level of significance =…

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: a. Suppose a random variable x defines the data speed of a particular smartphone at airport.

Q: Calculate the 95% margin of error in estimating a binomial proportion p using samples of size n =…

A: From the provided information, Confidence level = 95% Sample size (n) = 200 And p = 0.9

Q: The test statistic of z=0.81 is obtained when testing the claim that p > 0.2. a. Identify the…

A:

Q: Linear Equations: Real World Applications A student has scores of 86.25, 86.25, and 92.75 on his…

A: We have given the following student score 86.25,86.25,92.75 Required average (atleast) = 90

Q: Construct the confidence interval for the population mean. If the sample size is 35, the sample mean…

A: From the provided information, Sample size (n) = 35 Sample mean (x̄) = 4.8 Sample standard deviation…

Q: 2. Suppose that the amount of protein in certain type of energy bar is Normally Distributed with a…

A: Here, mean is 8.5 and standard deviation is 0.45.

Q: Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten wealthiest…

A: Solution:  The sample of n=10  amounts of net worth​  data is given.

Q: Boxes of cereal are labels as containing 13ounces following are the weight of a sample of 12 boxes.…

A: Given that 13.01, 13.02, 13.07,  13.09, 13.16, 13.16 13.02, 13.15,  13.12, 12.98, 13.11, 13.18  We…

Q: For the given confidence level and valves of x and n. Find the following X=48, n=97,and confidence…

A: Given X=48, n=97  Level of significance=1-0.995=0.005

Q: Assume that adults have IQ scores that are normally distributed with a mean of 97.1 and a standard…

A: Given data normal distributionμ = 97.1σ= 19.4find first quartile.

Q: Use the following data set to find the equation of the regression line.  Show the output and the…

A: When we want to predict the value of one variable, say y, from the given value of another variable,…

Q: 4. A researcher was examining the effectiveness of different treatments in reducing depressive…

A: The assumptions of ANOVA are as follows: 1) Each group sample comes from a population that is…

Q: You wish to test Ho:μ = 63.5 versus Ha:μ ‡ 63.5 at a significance level of 0.10. You obtain a sample…

A: GivenMean(x)=53.9standard deviation(s)=16.6sample size(n)=22significance level(α)=0.10The null and…

Q: confidence

A: Sample  Dark (x)    (x-x̄)2 1 258 6336.16 2 211 1062.76 3 190 134.56 4 175 11.56 5…

Q: the vividness of dreams they all had perienced during REM sleep (they were awakened during REM…

A: We have to determine which one of the statement is correct for this hypothesis.

Q: A Uniform Distribution has probability Density Function f(x) = 0.00230 when its not equal to O. Find…

A: given data f(x) = 0.00230find length of interval uniform distribution x~U(a.b)  length of interval…

Q: Engineers want to design seats in commercial aircraft so that they are wide enough to fit 90% of all…

A: given  data normal distribution μ= 14.3σ= 0.9 for smallest 90%P(x<z) = 0.90x = ?

Q: Claim Fewer than 93% of adults have a cell phone. In a reputable poll of 1130 adults, 88% said that…

A: Given  p=93%, n=1130, p^=88%

Q: Find the necessary confidence interval for a population mean u for the following values. (Round your…

A: Solution-: Given: x¯=32,n=34,s2=19,c=0.99 We want to find 99% C.I . for μ?

Q: b) A bag contains 10 cards, of which 2 are marked two, 1 is marked three, 4 are marked four and 3…

A: Given that  A bag contains 10 cards  2 are marked 2  1 is marked 3 4 are marked 4 3 are marked 5

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A drug is…

A: According to the given information in this question There are more than three subparts according to…

Q: 3. A sample of n = 25 scores has a mean of M = 200 and a variance of s² = 100. a. Explain what is…

A: Sample is the any fraction of the population. The sampling distribution corresponds to the value of…

Q: data represents the murder rate per 100,000 individuals in a sample of selected cities in the United…

A: class f x f*x f*x2 5-11 8 8 64 512 12-18 6 15 90 1350 19-25 10 22 220 4850 26-32 1 29 29 841…

Q: Question 4 A farmer supplies 500 bundles of long bean to a hotel every week. He claims that each…

A: 4. The sample size is 50 and sample mean is 18.

Q: In a survey, 17 people were asked how much they spent on their child's last birthday gift. The…

A: Answer: - A bell shaped with mean μ = $48  ans standard deviation σ = $8.                The sample…

Q: Cans of soda vary slightly in weight. Given below are the measured weights of seven​ cans, in…

A: Given: Sample size n = 7 Formula Used: Mean X = ∑Xin Median = 2(n+1)4thterm Outlier limit =…

Q: 15. A jar contains 36 disks: 9 each of four colors - red, green, blue, and yellow. Each set of disks…

A: The information provided in the question are as follows : “Since you have asked multiple question,…

Q: Calculate the 95% margin of error in estimating a population mean μ for the following values. (Round…

A: From the provided information, Sample size (n) = 20 Sample variance (s2) = 64 Confidence level = 95%