A researcher wishes to estimate the percentage of adults who support abolishing the penny. sample should be obtained if he wishes the estimate to be within 5 percentage points with 95% confidence if (a) he uses a previous estimate of 28%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) n = (Round up to the nearest integer)

Q: 4.6 4.6 4.5 4.3 4.7 4.9 4.6 4.6 4.6 4.5 4.7 4.5 4.5 4.6 4.6 4.6 4.8 1. Use the ungrouped data that…

A: Given:Ungrouped data is given.

Q: 1.P(Z0)=

A: We will use Standard Normal table to find the required probabilities.

Q: 16% of all college students volunteer their time. Is the percentage of college students who are…

A: We have given that p = 0.16n = 398x = 56p̂ = x/n = 56/398 =  0.1407α = 0.01

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A: Given Mean=29.1 X-bar=28.7 Standard deviations=3.8

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Q: The mean value of the following data is: classes 40- 52- 64- 76- 88-100 Σ 13 30 36 22 11 110 69.9 O…

A: Formula : mean :

Q: 4. A fisherman catches 200 fish to sell. He measures the lengths, I cm of these fish, and the…

A: Given: A fisherman catches 200 fish to sell. He measures the lengths, l cm of these fish.

Q: INSTRUCTION: Ask the ages of your 10 relatives parents, siblings, cousins, aunt, uncle and the…

A: The following sample data ( ages of relatives)  has been provided: 47, 46 , 24, 17 , 9, 1, 11, 25, 7…

Q: Total claims rejected: 100 Total claims submitted: 1,000 Time period: 3 months   Calculate the…

A: Given: Total claims submitted = 1000 Total claims rejected = 100 Time period = 3 months   Formula…

Q: A random sample of 400 residents are asked if they are in favor of the proposed 10% vanity tax that…

A: It is given that n=400 and x=300.

Q: Suppose salaries at a very large corporation have a mean of PKR 100,000/= and a population standard…

A: From the provided information, Mean (µ) = 100000 Population standard deviation (σ) = 20000 X~N…

Q: CNNBC recently reported that the mean annual cost of auto insurance is 977 dollars. Assume the…

A: GivenMean(μ)=977standard deviation(σ)=252sample size(n)=36

Q: 14. What is the sum of the squared deviations from the mean? a. 20 b. 18 c. 15 d. 10 15. The…

A: The frequency distribution table is as follows: Class interval Frequency Class mark Xi Lower…

Q: Compute the range and sample standard deviation for strength of the concrete (in psi).

A: here given data of strength of concrete

Q: The payouts for the Powerball lottery and their corresponding odds and probabilities of occurrence…

A: The answer is attached below,

Q: D. Calculate the z-statistic for each of the following. Write your answer on the space provided. n P…

A: The objective is to find the z- statistic value for the following :

Q: qualities as options, one of which is "communicator", as the most important quality for an effective…

A: It is given that  Favourable cases, X = 121 Sample size, n = 275 Sample proportion, p^ = X/n…

Q: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: Sample size n = 30 Number of students who prefers eBook X = 4   Formula Used: Point estimate of…

Q: If I got 18 from 20 in first exam And I got 18 from 20 in second exam And my teacher want to make a…

A: From the given information we find the final marks out of 50

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A:

Q: Real-life Problem Apply the concept of Regression Analysis, present your ANSWER with COMPLETE…

A:

Q: The five number summary of a dataset was found to be: 1, 5, 12, 15, 19 An observation is considered…

A:

Q: es No Total New England 27 13 Mid-Atlantic 29 11 Midwest 28 12 Great plains 33 7 South Atlantic 32 8…

A: Given information:   Yes No Total New England 17 13 40 Mid Atlantic 29 11 40 Midwest 28 12…

Q: randomly selected sorority sisters. Brothers: 11 885 13 4 4 7 5 7 12 4 3 Sisters: 8 2 3 6 2 4 6 6…

A: Given : For Brothers given data : 11,8,8,5,13,4,4,7,5,7,12,4,3 from the…

Q: about the average value in a data set. a. central tendency b. consistency 2. Which of the following…

A:

Q: Consider the probability density function f(x) = 1.5x² for-1 ≤x≤ 1. What is P(x > 0)? a. 0 b. 0.125…

A: It is given that  The probability density function of continuous random variable X is  f(x) = 1.5x2,…

Q: 14. Sponsors of a local charity decided to attract wealthy patrons to its $500-a-plate dinner by…

A:

Q: For the past ten years, the daily high temperature on January 1 in a mountain town (in degrees…

A: Given data: For the past ten years, the daily high temperature on January 1 in a mountain town (in…

Q: Describe the limiting behavior of an independent process and the limiting behavion cess with the…

A:

Q: X P(Z P(Z) THEN 1.8626 = (+P) - 0 < X<N. CORRECT O ERROR O

A: Solution

Q: ms produced by each machine are randomly selected. Let X be the number chine 1 produces 5% defective…

A: Given X~B(n, p)

Q: The lifetimes of a particular type of light bulb has been Normally distributed with mean 4500 hours…

A: The lifetimes of a particular type of light bulb has been Normally distributed with mean 4500 hours…

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A: Here researcher wants to know relationship between Temperature and strength. We have to calculate…

Q: Here is a bivariate data set. X y 15 16.1 29.4 76.5 14.9 -153.4 23.6 20.4 21.5 136.8 8.1 117.5 13…

A: Here data is given, We have to calculate correlation coefficient for the data. Correlation…

Q: The variable xx denotes the time taken in seconds for a computer link to be made between the…

A: It is given that the mean is 15 and the standard deviation is 3.

Q: Question 22: Test the claim that the proportion of people who own dogs is less than 32%. A…

A:

Q: a) The probability that a score is from 185 to 210 is 1 (Round to four decimal places as needed.) b)…

A: as per our company guidelines we are able to answer only first 3 sub-parts. Kindly repost other…

Q: A car battery manufacturer claims that its car batteries last at least 5 years on average, under…

A: Given, sample size (n) = 51 sample mean (x̄) = 4.89  standard deviation (σ) =  0.38  population mean…

Q: strengths and criticisms of the scientific method in research

A: The scientific method is one of the ways of conducting research.

Q: Given 50 multiple-choice items in their final test in Mathematics, the scores of 30 students are the…

A: Given  30 obs. of data set is 23 38 28 46 22 20 18 34 36 35 45 48 16 22 27 25 29 31 30 25 44…

Q: Lot classes repetitions fi 40- 13 52- 30 64- 36 The question value for the following data is: 76- Σ…

A:

Q: A consumer organization wants to estimate the actual tread wear index of a brand name of tires that…

A:

Q: 4.6 4.6 4.4 4.5 4.3 4.7 4.9 4.6 4.6 4.6 4.5 4.7 4.5 4.5 4.6 4.6 4.6 4.8 1. Use the ungrouped data…

A:

Q: Consider a t distribution with 24 degrees of freedom. Compute P(t≥-1.21). Round your answer to at…

A: Given Df=24

Q: d) Theth percentile corresponds to this score, which means that 299 is (Round to five decimal places…

A: Now finding the answer for (d) Given that the best score is 299 now we have to find percentile…

Q: Do political science classes require more writing than history classes? The 40 randomly selected…

A: Given n1=40 n2=53 X1-bar=13.1 X2-bar=10.8 S1=3.9 S2=5.6

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A:

Q: Use the critical value method to determine if the sample data support the epidemiologists'…

A: According to the given information in this question We need to answer the rest of the following

Q: The mean age when smokers first start is 13 years old with a population standard deviation of 1.8…

A: GivenMean(x)=12.3standard deviation(σ)=1.8sample size(n)=35significance level(α)=0.05

Q: A researcher would like to estimate the mean weight of all adult male American alligators in the…

A: Givensample size(n)=80Mean(x)=522standard deviation(σ)=25Confidence level=96%