Exhibit 12-26 The following shows the number of individuals in a random sample of 96 adults who indicated they support each candidate for the 2024 Presidential election based on a Newsweek poll in September 2021. Political Candidate Trump Harris Observed Frequency 49 47 Total 96 We are interested in determining whether the opinions of the individuals of the two groups are uniformly distributed. Refer to Exhibit 12-26. The number of degrees of freedom associated with this problem is 95 2

Q: 5. If a researcher rejects a true null hypothesis, she has made a error.

A: here use basic of statistical error 

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A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

Q: 2. A Type Il error is committed when A. we reject a null hypothesis that is true. B. we retain a nul...

A: The type II error is the probability of fail to reject the null hypothesis when alternative hypothes...

Q: Find the critical valued for the given confidence level c and sample size n. c=0.98, n= 23 2 = (Roun...

A:

Q: Once we have a x value we need to determine if it is statistically significant. This is accomplished...

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Q: Effect size is most important when we reject the null hypothesis fail to reject the null hypothesis ...

A: Effect size gives the meaningful relationship between the groups of observations under study. We hav...

Q: Testing the hypothesis using a one-tailed test at 0.01 level of significance, do these data support ...

A: here  population standard deviation  = 12 n= 36 alpha  =   0.01  

Q: You are given a dataset of 14 values (sorted): 20,37,62,64,65,68,69,71,78,79,80,80,90,95 We find a f...

A: Given Dataset are 20,37,62,64,65,68,69,71,78,79,80,80,90,95 Min=20, Q1=64, Median=70, Q3=80, Maximum...

Q: A certain fight arrives on time 83 percent of the time. Suppose 112 flights are randomly selected. U...

A: Givenp=0.83n=112x~Binomial(n=112,p=0.83)P(X=x)=(nx)×px×(1-p)n-x   ; x=0,1,...,n

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A: Bismark systems - Social health insurance system. Main motive of system -  control of health expendi...

Q: (d) Conduct a hypothesis test using a = 0.0s. Calculate the test statistic. (Round your answer to th...

A:

Q: Suppose a sample of O-rings was obtained and the wall thickness (in inches) of each was recorde,1. U...

A: For the given data select the correct choice

Q: Solve the following items. 1. The weight of goats at a farm is normally distributed with a mean of 6...

A: 1) Mean = 60 kg , SD = 10 kg      Weight on truck = 650 kg , Number of goats = 10      Total weight ...

Q: A. Read Quarter 3_Module 8 involving finding the probability of AUB on pages 3-8. Answer the problem...

A: Sample space=S={1,2,3,4,5,6,7,8} X={1,2,3,5} Y={2,4,6,8} Note: According to Bartleby guidelines expe...

Q: 12.3 Random sampling of individuals with sity found the following grade point averages (GPAS) for th...

A: Solution: Given information: k= 4 groups  N1= 178N2= 64N3= 99N4= 121N= N1+N2+N3+N4N= 178+64+99+121N=...

Q: A social psychologist recently developed a childhood-memories test that is intended to measure how p...

A: The hypothesize mean is 60.

Q: Determine the area between z-0.76 and z=2.88 * 0.7744 0.2216 0.7745 O 0.2217

A:

Q: A multiple-choice examination consists of 85 questions, each having possible choices a, b, c, and d....

A: Given: Sample size (n)=85Probability (p)=0.25 Here we use Normal approximation to binomial with corr...

Q: You may need to use the appropriate technology to answer this question. A sample of 16 items from po...

A:  

Q: A recent study claims that 40% of registered voters associate themselves with Democrats. 35% with Re...

A:

Q: Consider the following time series. Quarter Year 1 Year 2 Year 3 1 70 67 61 2 48 40 50 58 60 53 4 77...

A: Given data: Quarter Year 1 Year 2 Year 3 1 70 67 61 2 48 40 50 3 58 60 53 4 77 80 71  

Q: a certain presidential election, Alaska's 40 election districts averaged 1,958.8 votes per district ...

A: Let X = Number of votes for the candidate for an election district.  X~N(μ=1958.8, σ=572.5)

Q: A random sample X1,X2.Xn comes from a population about which you know, essentially, nothing. If n 25...

A: Given that the random sample X1, X2, …,Xn of size n≥50 is taken from population.

Q: In order to generalize to a population a sample must be randomly selected O a. Cannot say O b. True ...

A:

Q: What did you do to identify the area of the shaded region?

A: For normal distribution we use normal table to find the area of the region.

Q: Match the following below. This type of data comes from stories or V [Choose ] reports about cases t...

A:

Q: For a hypothesis test of a single population mean with known population standard deviation (0), we c...

A:

Q: e. The p-value is ? v a f. Based on this, we should Select an answer g. Thus, the final conclusion i...

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for you...

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean o...

A:

Q: a) Suppose the decision boundary is set to 98.5 sxs 101.5, compute type-l error a. b) Suppose the sa...

A: Here use basic of type 1 and type 2 errors 

Q: what causes the rejection of null hypothesis? what is the significance level?

A: The p - value less than 0.05(5%)

Q: Select the item that would be considered a placebo.

A: # What is a placebo and why is it used  Placebo is used in clinical trials to test the effectiveness...

Q: Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of ...

A:

Q: Do the histogram

A: Histogram is used to visualize the data when it arranged in a specified range or class. It used to v...

Q: Assume there are N = 1000 patient records from which a simple random sample of n = 20 is to be drawn...

A: Population (N=1000) Simple random sample (n=20) drawn from population.     

Q: Belsky, Weinrub, Owen and Kelly (2001) reported on the effects of preschool child care on the develo...

A:

Q: 2. The weight of 2,000 students are normally distributed with the mean of 46kg and standard deviatio...

A: First we find the required probabilities for getting the answers for given problems, (a) (b) (c) ...

Q: Supp_ose that, in a cert_ain sta_ge, only 60% of_ all dri_vers re_gula_rly we_ar a seat_be-lt whi_l...

A:

Q: 11. Three training methods are employed and then compared to determine if there are differences in t...

A: There are 3 independent samples which are 3 methods. We have to test whether the training methods yi...

Q: Mr. Zuro finds the mean height of all 16 students in his statistics class to be 66.0 inches. Just as...

A:

Q: The body needs vitamin D in order to use calcium. An experiment is designed to study the effects of ...

A: Anova is used to meausre the mean significance between more than three variable. Factorial design ar...

Q: scores and mathematics test scores. 4. Find the least squares regression line of p and q for the fol...

A: The objective is to find the least-squares regression line of p and q for the given data : p 3 6 ...

Q: Undergraduate GPAs It is desired to estimate the mean GPA of each undergraduate class at a large uni...

A:

Q: B. Read Quarter 3_Module 9 involving Illustrating mutually exclusive and not mutually exclusive even...

A: Two events are said to be mutually exclusive if they have no elements in common.

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A: Given that  X~N(μ= 2885 , σ= 651 ) μ= 2885 , σ= 651 , n = 47

Q: Probability values range from -1.00 to +1.00 O a. False O b. True O c. Cannot be determined

A: We have given that,  Probability values range from -1.00 to +1.00 Then,  We have to check the true o...

Q: You may need to use the appropriate appendix table or technology to answer this question. Given are ...

A:

Q: Alex makes mistakes in a with an average of 1.2 mistakes per class. In a given class, what is the pr...

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Q: A sample of n=D9 scores is obtained from a normal population with standard deviation of 0=12. The sa...

A: Here, mean is 60 and standard deviation is 12. Population mean is 55 and sample number is 9. We will...

Q: We give JMP output of regression analysis. Above output we give the regression model and the number ...

A: Given that  From the given output