X P(x) 0 0.2 1 0.1 2 0.3 3 0.4 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places

Q: A random sample of n = 12 E-glass fiber test specimens of a certain type yielded a sample mean…

A: Given: n = 12 x¯ = 20.2 s = 1.5

Q: A marketing research survey shows that approximately 80% of the car owners surveyed indicated that…

A: Hello. Since your question has multiple, we will solve first question for you. If you want remaining…

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Q: In 2016, National Geographic conducted a survey of 1203 college-age American adults who attended a…

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Q: 1. Using the grouped data below, answer the following correctly and make an analysis. Scores of 50…

A: Note: Hi, since more than three subparts are asked. According to guidelines we will answer first…

Q: When n≥30 and the population standard deviation is unknown, what is the appropriate distribution? P…

A: Disclaimer: Since you have asked multiple question, we will solve the one question for you. If you…

Q: A dietitian is comparing the sodium content in real cheese with the sodium content in imitation…

A: Introduction: The boxplots for the distribution of sodium content (milligrams) in random samples of…

Q: f the maximum error with 0.99 probability is 0.25 and a sample size 400, then the standard deviation…

A: Maximum error=Margin of error=0.25 Sample size; n=400 α=0.01

Q: 2 3 4 5 6 7 8 9 10 11 12 6, 2 1, 5, 2, 7 7,8,4 2,5 3,6 2 6 where 7 | 2 = 72 students Calculate the…

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A: First we state the hypothesis for the above question. H01 : There is no difference between…

Q: A study done by researchers at a university concluded that 90% of all student athletes in a country…

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Q: QUESTION 10 calculate Σ Σ Ν-ΡΟα... X 5 6 4 7 2

A: According to the given information in this question We need to find the sum of these numbers

Q: The average cost to rent a single-family home in Sebastian is $1,887 per month. Assume that the…

A: From the information we find the probability.

Q: Linear Regression and Correlation. X y 3 -13.78 4 -14.64 5 -7.9 6 -10.76 7 -19.82 Compute the…

A: The regression equation is given by y' = a + bx

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

Q: A researcher is curious to see if the amount of time spent on social media influences how often…

A: Since, it is not mentioned which question to be answered, we'll be answering the first question…

Q: A random sample of birth weights of 174 babies has a mean of 3101 g and a standard deviation of 685…

A: Given : n=174 Mean=3101 Standard deviation =685 Confidence level =95%

Q: A researcher is interested in finding a 90% confidence interval for the mean number minutes students…

A: Given n=114 X-bar=32.2 S=11.2

Q: 2. a. It is known that 4% of the screws produced by a company weigh less than their specified value,…

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Q: Question 2 The head teacher of the New Wings Secondary School ask the Math HOD whether the…

A: Normal Distribution: The normal distribution is a balanced distribution function around its mean,…

Q: What would be the excel equation for this problem?

A: The mean is 110 and the standard deviation is 25 grams.

Q: Suppose Y is normally distributed with mean 5.4 and variance 1.69. Determine the following…

A: Given: Mean μ=5.4 Standard deviation σ=1.69=1.3

Q: According to a recent Gallup Poll, 24% of Americans believe that healthcare is the most important…

A: Given P=0.24 n=350

Q: Q5) If the following data set obey equation, i.e. y=a+bx linear regression x 3 4 5 9 11 y 42 38 31…

A: Solution-: We want to find linear regression equation and the predicted value of Y if X=12.5?

Q: During the exam you will be using a sample of 500 adults with the following variables: ● genhelf -…

A: Given that  During the exam using a sample of 500 adults with the variables genhelf-variable…

Q: a) The number of red balls in :the box before addition is

A: Total no: of balls=25 let x be the no: of red balls in the box and 25-x be the no: of blue balls…

Q: 5. Ho: p = 0.15, p= 0.13, Zcritical = Decision: n=80, Ha: p = 0.15 confidence level = 95% Zcomputed

A: As per bartleby guideline expert have to answer first question only dear student please upload other…

Q: The table shows the distribution for the number of employees in 40 companies belonging to a…

A: The provided information is  Number of Employees Number of Companies (f) Class Boundaries cf…

Q: Find the E(X) of the random variable X with the following PDF: £x(x)=4410.11(x)+(1.2)(x)+(-+)423)(x)

A: 3 Given density function is, fx=x2I0,1x+12I1,2x+-x2+32I[2,3)x      =x2, 0<x<112,…

Q: form b(n,p,x). There is no need to give the numerical value of the probability. Assume the…

A: Given that  B) here  n = 35 P = 1- 0.15= 0.85 X = 31

Q: The mean score of a class of 30 students in their math test is 6.267. The standard deviation is 1.9…

A: The null and alternative hypothesis is, The given 95% confidence interval for population mean is,…

Q: QPA's are weighted averages where the weights that are used are the number of credits. Find the…

A: Given Credit hours 3 C  4 A- 1 B

Q: The heights (in cm) and weights (in kg) of thirteen male and ten female students are given below:…

A: * SOLUTION :-    Given that ,

Q: c) If only 50 employees are needed to participate, how many should be taken from each department…

A: Given,     Number of Employees = N= 1202     Sample size in proportional allocation= np=n*NpN…

Q: The temperature, (in degrees Fahrenheit), of a mixture and the corresponding concentration of a…

A: The question is based on a regression Given :

Q: Following is a pie chart that presents the percentages of video games sold in each of four rating…

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Q: Trigger is a horse and has hooves. Oakley is a horse and has hooves. Oakley is a horse and has…

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Q: Variable X has the following PDF: fx(x)=1/(-1,01(x) + (2-x)(0,2)(x). a) Find its CDF. b) Evaluate…

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Q: A random survey of people at a science fiction convention asked them how many time they had seen…

A: Given data is3,4,2,8,10,5,1,15,5,16,6,3,4,9,12,3,30,2,10,7sample size(n)=20

Q: Samples of students where drawn from two universities and from their weights in kgm and standard…

A: Given information: x¯1=55s1=10n1=400x¯2=57s2=15n2=100 Null Hypothesis: H0:μA=μB Alternative…

Q: In a biology class, a group of student brought 9 mic for their experiment. They measured the weight…

A: Solution To find the weight we will use regression analysis.

Q: Question 2 Based on the scatterplot below, it appears there is at least one candidate outlier in…

A: Correlation  A correlation coefficient is a statistical technique to assess the magnitude of the…

Q: The average math SAT score is 523 with a standard deviation of 118 A particular high school claims…

A: Given that  The average math SAT score is 523 with a standard deviation of 118. Mean (μ) = 523…

Q: a store claims that on the average they sell 800 pieces of candies. during the last five days,…

A: The question is about hypo. testing of a popl .mean Given : No. of days ( n ) = 5 No. of sold pieces…

Q: From a bin of 50 parts, 6 parts are selected randomly without replacement. The bin contains 3…

A: Given  Total parts=50 6 parts have been selected from 50 parts Defective parts=3 Non-defective parts…

Q: i. With what degree of confidence can one deduce that the confidence limits of the actual proportion…

A: here given ,  sample size n = 5000 and sample proportion car having cameras = 10005000 = 0.2

Q: Identify the specific type of sampling used for each situation. 1.  A statistics professor is…

A: The objective is to identify the type of sampling used in each situation.

Q: marketing firm is considering making up to three new hires. Given its specific needs, the management…

A: Given P(x>=2)=0.60 P(x=3)=0.15

Q: The owner of a convenience store has determined that their daily revenue has mean $7,200 and…

A: