The following is a Poisson probability distribution with P(x) 0 0.9020 1 0.0835 2 0.0115 3 0.0030 The variance of the distribution is XO

Q: You run a regression analysis on a bivariate set of data (n 103). With = 24.3 and y = 75.9, you…

A: Givenn=103x = 24.3y = 75.9Regression equation is y=0.659x+59.886Correlation coefficient(r)=0.883

Q: If there is no seasonal effect on human​ births, we would expect equal numbers of children to be…

A: Given: There are 120 students in the class  Winter = 24 Spring = 36 Summer = 32 Fall = 28 Formula…

Q: Prove: Let X₁, X₂,..., X„ be a r.s. from N(µ,σ²) and Y₁,Y,₂,..., Y be another independent r.s. from…

A: Given the independent random variables X1, X2, . . . , Xn1~Nμ1, σ12 Y1, Y2, . . . , Yn2~Nμ2, σ22

Q: Significant Difference Between the Sensitive Cultures Table 2.1 Significant Difference Between the…

A: Given the data as Plate No.  Positive Control (mm)-  Nystatin Experimental Control (mm) - Basil…

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A: Data analysis  Note that I used R software for my calculations.

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A:

Q: 1.x = 50 μ=45o = 8 Find the area to the right. 2 x= 109 μ=116=2.7 Find the area to the left.…

A: 1. It is given that the mean is 45 and the standard deviation is 8.

Q: 0 20 40 60 80 12 Force (N) Length (mm) 21 100 185 255 350 2. Use the table of measurements of length…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Question 18: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA)…

A:

Q: In an experiment, college students were given either four quarters or a $1 bill and they could…

A: The answer has been attached below,

Q: In a recent​ year, a hospital had 4142 births. Find the mean number of births per​ day, then use…

A: Solution-: Given : Mean number of birth per year (365 days) is 4142 We want to find, (a) The…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: d. If one randomly selected worker is observed, find the probability that this worker will put…

A: Given: μ = 4.6 σ = 0.9 n = 16   Formula Used: Z-score = X-μσ Z-score = X-μσx Z-score = ∑X-μσ∑x

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A: Given Total 72 companies

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A: Correlation analysis

Q: A random variable X has the probability density function given by 1 (3 + x)², -3 < x≤1 16 1 f(x)=16…

A: Given that                  We have to find mean and standard deviation of X :

Q: Work Time Lost due to Accidents At a large company, the Director of Research found that the average…

A: Formula : CI= x̄ ± E

Q: A government official estimates that the mean time required to fill out the long form of the United…

A: Null hypothesis: The average weight has gone down. H0 : μ =36. Alternative hypothesis: H1 :μ  ≠ 36

Q: A single-serve coffee maker is programmed to dispense 10 ounces per cup of coffee. Each month, a…

A: GivenMean(x)=10.22standard deviation(σ)=0.39sample size(n)=29significance level(α)=2.5%=0.025

Q: X₁, X2, ..., xn is a random sample from the population that follows Xn a Poisson distribution with…

A: Given information: Given x1, x2, x3.................xn is  a random sample from the population that…

Q: a. Compute the seasonal index for Spring: b. Compute the seasonal index for Summer: c. Compute the…

A: It is given that M1 = Mean(spring) = 4000 M2 = Mean(summer) = 3000 M3 = Mean(fall) = 2000 M4 =…

Q: Question 13: You wish to test the following claim (H1H1) at a significance level of α=0.01α=0.01.…

A: Given,n=7x¯=56.1s=8.8H0:μ=50.8H1:μ&gt;50.8α=0.01degrees of freedom(df)=n-1df=7-1=6

Q: Q3/A/Find the mean, standard deviation, lower and upper quartiles, and the coefficient of skewness…

A: Solution-: We have following table: fi= Number of students Marks Freq (fi) Below 5 6 Below 10…

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: Question 5: Match each scatterplot shown below with one of the four specified correlations.…

A: Solution Given scatter plot is

Q: Question 15: You run a regression analysis on a bivariate set of data (n=79n=79). You obtain the…

A: To find: What is the predicted explanatory value? x = __??

Q: C. X is a normally distributed random variable with a mean of 57 and a standard deviation of 6. Find…

A: Given data : Population mean  = 57 Population standard deviation = 6

Q: central airlines claims that the median price of a round-trip ticket from chicago, illinois, to…

A: Sample size(n)=25 Median price=606 The number of tickets below $606 =11

Q: 1. Analysis of one variable at a time is often referred to as what type of analysis? 2. What are the…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: The average score for games played in the NFL is 21.2 and the standard deviation is 9.3 points. 17…

A: From the given information for part e and f we have x̅~ N (µx̅ , σx̅ )= N(21.2, 2.2556)

Q: The US Department of Energy reported that 52% of homes were heated by natural gas. A random sample…

A:

Q: Express the confidence interval (68.8 %, 79 %) in the form of p + ME. % ± 96 Question Help: Video…

A: Given CI=(68.8%,79%)

Q: For each research scenario below, indicate: which hypothesis test (z-score test, one-sample t-test,…

A: The choice of inferential test depends on different conditions.

Q: C. Find the mean of X of the probability distribution of the discrete random variable X. 3-x 3 f(x)…

A: Given that ; A discrete  probability mass function (pmf) is given here.  By comparing the pmf  of…

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A: Regression analysis Here x represents years since 1980 and y represents per capita consumption of…

Q: what is actuarially fair policy in insurance? why is it a benchmark?

A: We know : Fair means equal (input =output) Benchmark : a standard by which other judged ( Target for…

Q: A particular fruit's weights are normally distributed, with a mean of 519 grams and a standard…

A: The answer is attached below,

Q: 0.90 z∗=1.645 0.95 z∗=1.960 0.99 z∗=2.576   A poll reported 46% support for a statewide election…

A:

Q: d. For the 35 cities, find the probability that the average amount of pollutants is more than 9.1…

A: The mean is 9.1 and the standard deviation is 1.7.

Q: as only children (no siblings). However, in the special program for talented and gifted children, 91…

A: According to the given information in this question We need to apply z test for one population…

Q: Suppose the average weight for a green apple is 153 grams, with a standard deviation of 27 grams,…

A: GivenFor Green apple Mean(μ)=153standard deviation(σ)=27For Red appleMean(μ)=200standard…

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: Solution

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

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Q: 11                7                   14                 13                 15…

A: Given that ;   Observation: XX X^2X2 1 17 289 2 15 225 3 11 121 4 7 49 5 14 196 6 13…

Q: Identify the type of sampling used (random, systematic, convenience, stratified, or cluster…

A: Given: k = 182

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: A JJC student surveys 30 randomly selected full-time students to determine the relation between the…

A: The answer is attached below,

Q: Use the graphs in Figure 3 below to answer the questions. Select the letter of the appropriate…

A: Given two frequency histograms.

Q: tion 16: According to a University Center for Logistics Management, 4% of all merchandise sold in…

A: Given data,Population proportion is p=4%=0.04Sample Proportion is P' =589=0.0562Test statistic z=?