f X is a uniformly distributed random varibale with a=9 and b=16, then Calculate the variance of X? Round to three decimal places

Q: n Z = -1.04

A: The area of the shaded region is given as follows:

Q: IQ test creators would like to know if scores between two tests are significantly different. To…

A: The IQ test creators wants to test if scores between two tests are significantly different.

Q: Suppose that the summands of a compound Poisson process {Xt: t > 0} of parameter λ have distribution…

A: Let Nt be the Poisson process with rate λ, and let Y1, Y2, Y3, ... be i.i.d. exponential random…

Q: Construct the cumulative frequency distribution for the given data. Age (years) of Best Actress when…

A: According to the given information, we have The cumulative frequency distribution table is given.

Q: Researchers wish to carry out a test of the null hypothesis that the mean of a certain population is…

A: The null and alternative hypothesis are H0 : µ = 760H1 : µ ≠ 760  Sample size (n) = 48  test…

Q: Identify the test statistic. |t= (Round to two decimal places as needed.) Identify the P-value.…

A: According to the given information in this question We need to apply paired t test

Q: Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in…

A: The CI gives range of values in which the population parameter lies with certain confidence.

Q: An experimental design for a paired t test has 24 pairs of identical twins. How many degrees of…

A: Answer: From the given data, For a paired t test, There are 24 pairs of identical twins Sample size…

Q: random sample of 34 criminals convicted of a certain​ crime, it was determined that the mean length…

A: Sample size=n=34

Q: Bob is a photographer who sells prints on consignment. Each week during the summer, Bob checks the…

A: The data for the number of prints sold per week is given.

Q: Tanya went shopping and bought the following items: one red t-shirt, one blue blouse, one white t-…

A: Tree Diagram : Diagram 1 Tops / \ RT BB | | WT FB \ / Pants / | \ KC BP WC \ | /…

Q: Find the variance for the binomial distribution, P=0.87 and n= 32

A: Answer: From the given data, P = 0.87 n = 32 X follows binomial distribution (n,p)

Q: A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is…

A: A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is…

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

A: α = 0.05H0 : μ = 19.5Ha : μ > 19.5n = 121x¯ = 20.3σ = 3

Q: Suppose we want to test the concentration (μg/mL) of a specific dose of penicillin in the blood at a…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We…

A: From the provided information, Sample size (n) = 100 Eighty of the people in the sample favored…

Q: home at least once per week. Construct a​ 99% confidence interval for the population proportion of…

A: n=350, X=26, C.I=99%=0.99

Q: Test the above hypothesis is a random sample of 250 users has 210 successes. Solution: [Write…

A: here AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION PLZ REPOST FOR REMIANING AS YOU HAVE…

Q: Listed below are the amounts (dollars) it costs for marriage proposal packages at different baseball…

A: 35, 45, 45, 60, 65, 80, 95, 105, 180, 208, 265, 325, 450, 1500, 2500

Q: Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of…

A: The question is about measures Given :   To find : 5 no. summary

Q: 2) The table below shows the weights, in pounds, of seven subjects before and after following a…

A: From the provided information, Sample size (n) = 7 d = before - after 7 9 2 -5 14 -2…

Q: Suppose researchers are about to draw a sample of 1500 observations from a normally distributed…

A: Sample size, n = 1500 tα/2 = 0.46 We have to find the confidence level.

Q: A study was done using a treatment group and a placebo group. The results are shown in the table.…

A: According to the given information in this question We need to find the conclusion and 95%…

Q: Gun Legislation In a survey of U.S. adults, 43% said they would favor allowing people to carry guns…

A: n=100, p=0.43

Q: A hypothetical study concerned with estimating th187e amount of marijuana use per year among a…

A: Confidence level=0.95 Sample mean, x¯=5.3 Sample standard deviation, s=4.3 Sample size, n=110

Q: According to a government study among adults in the 25-to 34-year age group, the mean amount spent…

A: Given that The adults in the age group , the mean amount spent per year on reading and entertainment…

Q: all-business telephone users were surveyed 6 months after access to carriers other than Carrier A…

A: n1=280 x1= 145n2= 220x2= 152p^1=x1n1=145280=0.5179 Sample proportion of sample…

Q: The hapter 8 manager of a random grocery store has taken a customers. The average length of time it…

A: According to the given information in this question We need to answer three subparts

Q: 3. The Lévy distribution with parameter > 0 is characterized by having the density 2023 exp(-21),…

A: a) The likelihood function for a random sample x1,…,xn from the Lévy distribution with parameter θ…

Q: 1. For each of the transition matrices given below, list absorbing state(s), and determine the…

A: Any state is said to be absorbing state if probability of reaching to that state from same state in…

Q: When engaging in weight-control (fitness/fat burning) types of exercise, a person is expected to…

A: Sample size(n)=100 sample mean(x¯)=107 sample standard deviation(s)=45 degrees of freedom(df)=n-1…

Q: A political campaign is interested in whether a geographic difference existed in support for raising…

A: From the provided sample information, it is interpreted that: For city-1: The sample size (i.e., the…

Q: A washing machine in a laundromat breaks down an average of Four times per month. Using the Poisson…

A:

Q: Test In Exercises 7-16, Performing a Chi-Square Goodness-of-Fit (a) identify the claim and state Ho…

A: Null hypothesis: The distribution of people's preferences on how to pay for goods is same as the…

Q: In a recent year, the total scores for a certain standardized test were normally distributed, with a…

A:

Q: Consider the given discrete probability distribution, X P(X): 0.2 2 0.3 Calculate the P(X>2) 3 0.1 4…

A: Answer: From the given data, X    :     1             2            3          4          5 P(X):…

Q: Use a 0.05 significance level to test the claim that the gender of the tennis player is independent…

A: The accompanying above  table shows results of challenged referee calls in a major tennis…

Q: The FDA regulates that a fish that is consumed is allowed to contain at most 1 mg/kg of mercury. In…

A: Mercury level 0.87 0.48 0.34 0.34 0.49 0.4 0.84 1.16 0.56 0.21 0.16 0.49…

Q: A continuous random variable has a uniform distribution if its values are spread evenly over the…

A: Continuous random variables are those Have values between finite interval or infinite interval .

Q: Find the sample mean for the following data set 82,52,59,41,59,53,69,30

A: Answer:- Given data set is,  82, 52, 59, 41, 59, 53, 69, 30  Using formula,  Sample mean = (Sum of…

Q: 1.1 Consider Y₁, Y2,...,Yn are i.i.d. random variables with n > 4 and T is the sample mean Y. Also…

A: From the given information, Y1, Y2,…………..,Yn are i.i.d random variables.

Q: The accompanying table gives the number of copies sold for 30 top-selling novels. Use data given in…

A: The given data is as follows, 500 92 70 300 90 60 300 80 60 200 80 60 150 78 55 120 75…

Q: Suppose x has a distribution with mean of 32 and a standard deviation of 16. Random  samples of size…

A: Mean(µ) = 32Standard deviations (σ) = 16Here n = 64

Q: Let (Nt)t≥0 be a Poisson process. Explain what is wrong with the following proof that N3 is a…

A: There is a Poisson process Ntt≥0. We are required to find the mistake in the proof that N3 is a…

Q: If X is a uniformly distributed random variable with a = 4 and b = 8 then, calculate the standard…

A: A random variable X~U(4,8) f(x)=18-4   ; 4≤X≤8 f(x)=14      ;  4≤X≤8

Q: Listed below are numbers of tem omrelation coefficient r, and find the P-value of r. Determine…

A: The independent variable is Internet users. The dependent variable is Award winners. We have to do…

Q: For problems 7-10, use the following population information. Lifetimes of a certain brand of…

A: Here, mean lifespan is 17.2 years and standard deviation is 3.45 years.

Q: You may need to use the appropriate appendix table or technology to answer this question. A simple…

A: Sample size (n) = 60 Population Standard deviations (σ) = 8 Sample mean (x̅) = 36

Q: We consider a market with 1 riskfree asset and N risky assets. The following tables show the…

A: To determine if the portfolio chosen by the investor is the desired portfolio, we need to check if…

Q: A It is the assumption that the variances for levels of a repeated-measu B It is tested using…

A: