A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 7% margin of error at a 99% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places.

Q: The quarterly retums for a group of 65 mutual funds with a mean of 1.3% and a standard deviation of…

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Q: A psychologist is interested in constructing a 90% confidence interval for the proportion of people…

A: It is given that sample size (n) is 848 and x is 55.

Q: 32 Find the z values for each of the following x values for a normal distribution with mean = 16 and…

A: Given that  Mean = mu = 16 Standard deviation = s = 3  Z score = (x - mu)/s  a) x = 12 Z score = (…

Q: Given r^2=0.9316, SST=60.55   Compute: SSR= SSE=

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Q: The school registrar estimates that the dropout rate of senior high schools in Cavite is 47%. Last…

A: We have given that p = 47% = 0.47 n = 187x = 10p̂ = x/n = 10/187 =  0.0535Significance level (α)  =…

Q: In rolling a fair die once, what is the probability of rolling a 1 or an even number?

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Q: frequenter of a pub had observed that the new barman poured in average 0.47 liters of beer into the…

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Q: Suppose that you have 9 green cards and 5 yellow cards. The cards are well shuffled. You randomly…

A: As per our guidelines we are supposed to answer only 3 subpart of any questions so i am solving…

Q: In this paper, the authors explore the outness and identity disclosure for queer and trans students…

A: Note: As per the guidelines, in case of multiple subparts, answer to first three subparts will be…

Q: Q2 (a) Azli and Iman are both traveling for Batu Pahat to Melaka on daily basis. The average…

A: Given that, Azli and Iman are both traveling for Batu Pahat to Melaka on daily basis. The average…

Q: 5. For whichever measure of association you selected, interpret the Value. What does it tell us…

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

Q: Between 1980 and 2012, the number of adults in a certain country who were overweight more than…

A: Given: The number of adults who were overweight more than doubled from 17% to 36%.

Q: (a) The critical region isi 8.14. Find the value of a. Round the answer to 3 decimal places.…

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Q: Find the standardized test statistic t for a sample with n = 10,  xbar= 12.7, s = 1.3, and α = 0.05…

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Q: QUESTION 19 The table below gives the number of touch downs scored by the Patriots every season from…

A: A stem and leaf plot is a graphical display of quantitative data. It helps to visualize the shape of…

Q: If two pennies are flipped once, what is the probability both pennies will turn up heads? Assume…

A: Given that Two pennies coin are tossed  Coin are fair then probability of head or tail is 0.5

Q: 3. Hand in 9.24 Let Y1, Y2, Y3, ... Y, be independent standard normal random variables. a What is…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A bank with branches located in a commercial district of a city and in a residential area has the…

A: There are two independent samples which are commercial and residential. We have to test whether…

Q: The average operating life of light bulbs produced by Company A is 8100 hours and a standard…

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Q: In the population, the average IQ is 100 with a standard deviation of 15. A team of scientists wants…

A: We have given that  The a random IQ = 100 standard deviation = 15 Sample mean = 140 Sample size = 30

Q: X2 X, +X2 and q = 1-p waluate the following formula p, -p2 = 0, xq = 64, x2 = 13, n,= 290, ng = 304,…

A: Givenp1-p2=0x1=64x2=13n1=290n2=304

Q: Azli and Iman are both traveling for Batu Pahat to Melaka on daily basis. The average travelling…

A: Solution: Given information: Let X be the Azli travelling time is normally distributed with mean…

Q: a) How many possible combinations are there for matching all 6 numbers? b) What is the probability…

A: here given  there are total 28 number available for selection  player select 6 number

Q: 2. Compare the standard deviation to the population standard deviation. Then, compute for the…

A: Given Population standard deviations σ=1419, n=sample size=5, standard error=se=634.60

Q: Suppose that X has a discrete uniform distribution S 1/3, x = 1,2,3 0, otherwise f(x) A random…

A: Given that Suppose that X has a discrete uniform distribution   f(x) = {1/3, x= 1,2,3   0. otherwise…

Q: A synthetic fiber used in manufacturing carpet has a tensile strength that is normally distributed…

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Q: A 2016 survey of insurance professionals explores the use of technology in the industry. be most…

A: Graphs are extremely useful for representing data visually.

Q: State the appropriate null and alternative hypotheses. O H,: u = 5.04 H: u > 5.04 O H: 4 > 5.04 H: u…

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Q: For the accompanying data set, (a) draw scatter diagram of the data (b) by hand, compute the…

A: Given  that

Q: A company Is researching the effectiveness of a new website design to decrease the time to access a…

A: Form the above data Value of test statistic -2. 620

Q: Let us suppose we have data on the absorbency of paper towels that were produced by two different…

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Q: Calculate the critical tt-value(s) for each of the given hypothesis test scenarios below. If…

A: Know that.  Degree of freedom =df =n -1

Q: A construction company wants to estimate how likely it is that one of the screws they use for their…

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Q: What was the sample size for this simple regression analysis? Analysis of Variance Sum of Source DF…

A: We have given that the Analysis of Variance table.

Q: The accompanying table contains the overall download and upload speeds in mbps for nine carriers in…

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Q: If the omitted variable is negatively correlated with the treatment and has a positive impact on the…

A: The omitted variable must be correlated with the dependent variable. Or the omitted variable must be…

Q: The body mass indices (BMI) of 25 adults are given below. Determine the upper and lower quartiles.…

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Q: 1. How does the number of periods in moving average the forecast? 2. Contrast the terms sales and…

A: Day BB Muhins Cinnamon Cup cakes 1 30 18 45 2 34 17 26 3 32 19 27 4 34 19 23 5 35 22 22…

Q: If S-{0, 1, 2, 3, 4, 5, 6, 7, 8, 9} and A = {0, 2. 4, 6, 8], B- (1, 3, 5, 7, 9), C = {2, 3, 4, 5),…

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Q: QUESTION 2 When constructing a small sample confidence interval for a population mean, the…

A: We will tell you above statement is true or false

Q: Ho: µ = 62.3 H1: µ < 62.3 You believe the population is normally distributed, but you do not know…

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Q: mble. Number with Wart Successfully Removed Treatment Liquid nitrogen freezing 103 60 Duct Tape 100…

A: Given,  Forliquid nitrogen freezing: sample size (n1) = 103 x1 = 60 sample proportion (p1^) = x1/n1…

Q: i NEED HELP ON B,C,AND D, PLEASE!!! On a planet far far away from Earth, IQ of the ruling species…

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Q: person with normal blood pressure has a systolic measurement of 120 mmHg, and a standard deviation…

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Q: Indicate whether the following are true or false. Explain why true or false. a. A simultaneous…

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Q: Costco sells paperback books in their retail stores and wanted to examine the relationship between…

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Q: Question 2 a. The probability distribution function of random variable X is given below. X 4 6. 8…

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Q: What is the probability of a certain event?     1     0.1     -1     0

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Q: 1. How many odd four-digit numbers can be formed from 0,1,2,3,4,5,6,7,8,9 if each digit can be used…

A: here as per guidelines i have calculated first main question    here use counting principle

Q: Determine whether the following individual events are overlapping or​ non-overlapping. Then find the…

A: The sample space is: