If the alpha level changed from a=0.05 to a=0.01, what happens to the critical region and ehat happens to the probability of type 1 error

Q: You are performing a right tailed t-test with a sample size of 35. If alpha =.10, find the critical…

A: Given n=35, α=0.1 and the test is right tailed The degree of freedom for t test is n-1=34

Q: A population of values has a normal distribution with μ=70.6μ=70.6 and σ=22.5σ=22.5. You intend to…

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Q: sample is selected from a population with a mea of u=65 and a standard deviation of a=15 if the…

A: Mean = 65 Standard deviation = 15

Q: Consider a random sample of size n=2 taken from an exponential distribution with parameter lambda.…

A: INTRODUCTION:  EXPONENTIAL DISTRIBUTION  Exponential Distribution with parameter λ is given by…

Q: An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans…

A: Given Sample size =78 X=30

Q: A population of values has a normal distribution with μ=22.3μ=22.3 and σ=83.5σ=83.5. You intend to…

A: From the available information, A population of values has a normal distribution with μ=22.3 and…

Q: Subject Treatmen Gender Fam-Hist Age BP-Before-Exp BP-After-Exp D1 1 F PS 65 103.3 80.5 1 F 1 M D2 N…

A: A data can be raw or grouped, with some pro and cons associated with both of them. The raw data has…

Q: What is the z critical value? A recent survey done by the Philippine Housing Authority found that…

A:

Q: A population of values has a normal distribution with μ=151.4μ=151.4 and σ=31.3σ=31.3. You intend to…

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Q: Sketch a standard normal pdf illustrating the critical region having α = 0.05.

A: Two-tailed From the EXCEL, using the formula, =NORM.S.INV (0.975), the absolute critical value is…

Q: The time taken by brake discs to overheat on construction equipment is normally distributed with…

A: The mean is 3.1 and the standard deviation is 0.4.

Q: f the alpha level is changed from α = .05 to α = .02 What happens to the boundaries for the critical…

A: If the alpha level is changed from α = .05 to α = .02 What happens to the boundaries for the…

Q: of size 25 taken from a normally distributed population whose standard deviation is 15. What is…

A: As the population standard deviation is known, we will use z distribution. The critical z-value for…

Q: The population standard deviation is known, the α=0.01 in a left tailed test The critical value for…

A: We have to find out critical value..

Q: A population of N=6 scores has ΣX =12 and ΣX^2=54. What is the value of SS for this population?

A: Given dataN=6∑x=12∑x2=54 What is value of SS?

Q: What are the critical value(s) for the population mean( the population standard deviation is known)…

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Q: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…

A: Since the P-value is 0.000, we reject the null hypothesis that ρ=0. That is, there is significant…

Q: A population of values has a normal distribution with μ=240μ=240 and σ=66.8σ=66.8. You intend to…

A: Given A population of values has a normal distribution with μ=240 and σ=66.8. You intend to draw a…

Q: Considering the following MA(3) process: y_t = u_t − 0.7u_(t-1) − 0.2u_(t-2) + 0.4u_(t-3) Where u_t…

A: The MA(3) process is, Yt=ut-0.7ut-1-0.2ut-2+0.4ut-3 Here ut is a white noise process with variance…

Q: quality control team from a government agency was assigned to assess the measuring process for…

A: From the given data, the following statistics are calculated: n = Sample Size = 13  = Sample Mean =…

Q: Suppose we want to test the hypothesis of Ho : u 2 1 versus H. : u < 1, and a random sample of n =…

A: Given data : sample size, n = 49 sample mean, x̄ = -1.0 sample standard…

Q: If the coefficient p, has a nonzero value, then it is helpful in predicting the value of the…

A: The regression model shows the relationship between a dependent variable and 1 or more independent…

Q: Let’s say you are going to use a z-test to test H0: mean=413 vs Ha: mean≠ 413 at the alpha=0.05…

A: State the hypotheses.

Q: Find E(X^2) when random variable X has normal distribution with mean(µ) = 7 and standard deviation

A: Given information: mean(µ) = 7 and standard deviation(σ) = 4. That is, μ=EX=7σ=4⇒σ2=42=16

Q: value that form the boundaries of the critical region for a two-tail

A: The degrees of freedom for the repeated measures t statistic can be calculated as:  DF = n-1 Here,…

Q: Argue that P(S Using the doctor's E(S), then compute (S : 1). recommendation, prove that 3 = 2a.

A: In this scenario, we are tasked with determining appropriate values for the parameters  in a beta…

Q: Social distancing is an important measure to prevent the spread of COVID19. Assume that the chance,…

A: Given that r be the chance that a healthy person gets infected by a virus carrier who is L meters…

Q: (a) The current particulate standard for diesel car emission is 0.6 g/mi with standard deviation 0.3…

A: SD = 0.3 g/mi standard = 0.6 g/mi

Q: Let Y, represent the ith normal population with unknown mean #, and unknown variance of for i=1,2.…

A: Given that the random variable  represent the ith normal population with unknown mean  and unknown…

Q: A study was done to compare the birth weight of newborn babies from the general population to a…

A: The sample size n = 24 The mean birth weight in the population was 3.5 kg The sample mean of weight…

Q: You are performing a left-tailed z-test If a = .10, find the critical value, to two decimal places.

A: For the left-tailed ; we have given that,  Alpha = 0.10 We know that,  For the standard normal…

Q: Your hypothesis test for a mean with n = 18 has a two-tailed critical region. The test statistic is…

A: It is given that the sample size is 18 and the test is two-tailed. The value of test statistic is…

Q: f a test to detect a disease with prevalence of 1/1000 has a FB rate of 5% and a sentivety of 100%.…

A:

Q: Your friend claims that his commute time to work is different than his commute time returning home…

A: Explanation:The decision rule regarding the testing of hypothesis for a two-sided alternative using…

Q: A student of EE department wants to measure the voltage drop on a resistor. However, due to bad…

A: Given that alpha =0.05 ,M,E = 0.1 .s.d =0.2 n =?

Q: We collected a sample of twenty-five observations. We assumed that the observations are from a…

A: Given that,The sample size  is 25.The standard deviation  is 5. The level of significance is 5%.The…

Q: You are performing a two-tailed t-test with a sample size of 31 If a α= 0.05, find the positive…

A: Given  n=Sample size=31 Level of significance=α=0.05

Q: We want to use a z-test to determine if the mean is different from 10 at alpha = 0.05. Using the…

A: We have given that H0: µ=10 Vs H1: µ≠10 , at α=0.05

Q: Calculate the empirical statistic considering that RSS=1500, RSS1=400, RSS2=300, T=140, T1=70,…

A:

Q: .129 During an eight-hour shift, the proportion of time Y that a sheet-metal stamping machine is…

A: Given PDF of X is:Objective: Mean and Variance of C=10+20Y+4Y2

Q: What is the formula used to calculate the Wilcoxon Signed-Rank test statistic?

A: Wilcoxon Signed-Rank test Non-parametric tests include the Wilcoxon signed-rank test. It is used to…

Q: Suppose that T = (0^ - 0) / s { 0^ } ~ t ( v = 27 ) We want to test Ho : 0 = 10 vs. Ha : 0 + 10.…

A: Provided information is ; v=degree of freedom = n-1=27 n= sample size = 28 Population mean(θ) = 10…