15) In a past presidential election, the actual voter turnout was 61%. In a survey, 1002 subjects were asked if they voted in the presidential election. Is 900 significantly high number of voters in the past presidential election?

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A: The given sample size is 64, mean is 190 and standard deviation is 32.

Q: b) The random variable Y follows a Bin(10, 0.48) distribution. What is E[Y]? E[Y] = = Round your…

A: given data Y is binomial distributionY~Bin(10,0.48)E(Y) = ?

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A:

Q: Cats, Part II. Exercise 7.30 presents regression output from a model for predicting the heart weight…

A: Given Information:   Estimate Standard Error  T Value Pr(>|t|) (Intercept) -0.357 0.692…

Q: A simple random sample of 10 items resulted in a sample mean of 15. The population standard…

A: given data, n=10x¯=15σ=1

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A: Given that, Middle area = 15% = 0.15 15% of the area lies above the interval (3,19). To find the…

Q: company recieves, on average 6 requests per day to replace lost or stolen credit cards. what is the…

A: The average of poisson probability distribution is.  Average =λ=6 X~Poisson(λ) n!=n(n-1)......1

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 21 for the population…

A: given data, μ=100σ=21CI=0.95α=1-0.95=0.05E=7sample size =?

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A: A scatterplot is a graphical representation which shows a relationship b/w 2 variables.

Q: A machine is set to produce disc plates with a mean diameter of 14 mm. A sample of 8 discs gave a…

A: Given: A machine is set to produce disc plates with a mean diameter of 14 mm that is μ = 14 Sample…

Q: population has a mean of 91 and a standard deviation of 10. A sample of 25 observations will be…

A: μ = 91σ = 10n = 25P(87.56<x¯<96.3) = ?

Q: Each box Healthy Crunch breakfast cereal contains a coupon entitling you to a free package of garden…

A: x is the weight (in lbs.) assigned to the incoming mail package for a day.y is the number of…

Q: Suppose a simple random sample of size n =150 is obtained from a population whose size is N =15,000…

A: Sample size n =150 Population size N=15000 Population proportion p=0.8

Q: Poisson distributions have a unique property where the mean is equal to: the variance the standard…

A: The probability mass function of the Poisson distribution is as follows, P(X=x)=λx×e-λx! , x=0,1,...…

Q: 4. Sixteen-ounce boxes of shredded wheat cereal packed automatically by machine are sometimes over-…

A: Here given,  Sixteen-ounce boxes of shredded wheat cereal packed automatically by machine are…

Q: 26. Job Interviews In a Harris poll of 514 human resource professionals, 45.9% said th body…

A: Null hypothesis: The proportion of human resource professionals who consider body piercings and…

Q: 4. A statistic is said to be unbiased if A) both the person who calculated the statistic and the…

A: Given data :  A statistic is said to be unbiased if A) both the person who calculated the statistic…

Q: You may need to use the appropriate appendix tabre or technology to answer this question Two hundred…

A: Given Information: 200 students are enrolled in an Economics class. Sample size n=6 Scores: 67, 73,…

Q: More and more people are abandoning national brand products and buying store brand products to save…

A: Given sample size(n)=700 No. of people showed that they buy national brand coffee(x)=259 sample…

Q: Interpret the slope and the y-intercept in the context of the problem.

A: The data is defined below as follows:   From the information, given that   Let X denotes the…

Q: Suppose a simple random sample of size n =150 is obtained from a population whose size is N =15,000…

A: The data is as follows: n=150 N=15,000 p=0.8

Q: The p-value is correct, but the z-score is incorrect

A: It is given that a sample of 200 homes sold in which 113 homes with sales prices over median and 87…

Q: Suppose x is a random variable best described by a uniform probability that ranges from 1 to 5.…

A: Answer:- Given, x is a random variable best described by a uniform probability that ranges from 1 to…

Q: A deficiency of the trace element selenium in the diet can negatively impact growth, immunity,…

A: The data for initial and after 9 days treatment and control group.

Q: Find the value of the standard score, z, and determine whether to reject the null hypothesis at a…

A: here given data is:H0:μ=4.5H1:μ>4.5we have to find out the value of standard score, critical…

Q: Listed below are the lead concentrations in ​ug/g measured in different traditional medicines. Use a…

A: We have given that the mean lead concentration for all such medicines is less than 19 ug/g.…

Q: 4. Occidental University has 2000 male and 500 female faculty members. A university administrator…

A: Given that 2000 male  500 female  100 random sample of male and 100 female selected  We have to find…

Q: 3. Mr. Guo selects a random sample of size n = 16 from a population that is normally distributed.…

A: Sample size, n = 16 Sample mean x̅ = 78 Population variance σ2 = 4 So, Population standard deviation…

Q: 1. A produce market has 16 tomatoes of which 7 have minor blemishes. If 5 of these are randomly…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: Two different analytical methods were used to determine residual chlorine in sewage effluents. Both…

A: The following data is given, Samples Method A Method B 1 0.39 0.36 2 0.84 1.35 3 1.76…

Q: The manager of a supermarket tracked the amount of time needed for customers to be served by the…

A: We have given that

Q: 3. If the sampling frame used to draw a sample does not include the entire population then…

A: Given that If the sampling frame used to draw a sample doesn't include the entire population then…

Q: The following scores represent a nurse’s assessment (X) and a physician’s assessment (Y) of the…

A: Regression equation is the representation of the relationship between independent variable and…

Q: d. Describe the distribution using the following characteristics: What is the shape of distribution?…

A: Given data: 3, 7, 6, 5, 5, 9, 6, 4, 6, 8, 10, 2, 7, 4, 9, 5, 6, 3, 8

Q: Can you break down how to obtain the SS1 and SS2 scores

A: In given solution and formula for computing SS1 and SS2 is correct but x1 and x2  taken wrong. for…

Q: he ages of a group of 149 randomly selected adult females have a standard deviation of 16.5 years.…

A: The ages of a group of 149 randomly selected adult females have a standard deviation of 16.5 years.…

Q: Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data…

A: If a sample is taken from the population to check the mean significance of the population parameter…

Q: Explain better on a calculator. Too confusing

A: Women :  Mean = 63.8 SD = 2.6 Men  Mean = 67.3 SD = 3.9 Find P(55 < x < 64) = ? for men

Q: (c) Construct a central 98% confidence interval for u. 4. Repeat each part of the previous problem,…

A: Sample size =16 Sample mean=78  Sample variance=9  We have to find a...98% confidence interval for…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: normal distributionμ=1252σ=129we have to find out the given probabilties.

Q: What is a 95% confidence interval for the population mean taxi fare?

A: Here given , Suppose taxi fare from Logan Airport to downtown Boston is known to be normally…

Q: Consider a normal distribution curve where 70-th percentile is at 12 and the 45-th percentile is at…

A: P(X≤12)=0.70  P(X≤7)=0.45

Q: 1999 and 2001, 121 had been admitted on a weekend and  379 had been admitted on a weekday. This…

A: In the sample of 500 patients with severe complications, 121 were admitted on a weekend. The…

Q: A paper describes an investigation in which 40 men and 40 women with online dating profiles agreed…

A: Men Women xd = 0.59 xd = 0.01 sd = 0.81 sd = 0.75 n = 40 n = 40   NOTE: Hi…

Q: true population percentag

A:

Q: The Jackson family is going on a 10-day vacation to a tropical island that has a 33% chance of rain…

A: Number of trials n=10  Success of probability p=0.33 X~binomial (n,p) nCx=n!/x!(n-x)!

Q: Assume that females have pulse rates that are normally distributed with a mean of μ = 76.0 beats per…

A: From the provided information, Mean (µ) = 76.0 Standard deviation (σ) = 12.5 X~N (76.0, 12.5) Sample…

Q: Perform the test using a regression test (using a regression model with dummy variable).

A: To perform a regression test, we need to create a dummy variable to represent the two branches.…

Q: y chicks

A:

Q: Assume a standardized IQ test exists that possesses a normal distribution and has a mean score of…

A: Given: Assume a standardized IQ test exists that possesses a normal distribution and has a mean…