Using the given confidence interval to find the margin of error, Confidence interval :(5.69,8.72) The margin of error is........….....

Q: Suppose that 10 observations are drawn from a normal population whose variance is 64. The…

A: Given that the population variance is 64. Sample size is 10. σ2=64n=10 Claim: There is enough…

Q: Which of the following statements is true regarding the standard error of the difference in two…

A: Here, the statements are given regarding the standard error of the difference in two sample means…

Q: In the year 2033, katy perry is a leading traveling nurse. Katy is interested in reducing the mean…

A: Sample size (n)=46  Sample mean=8.1  Population mean =8.6  Sample standard deviation =1.2  We have…

Q: 1. The two lines were obtained by joining the data points that are of the form (year, number of…

A: The frequency shows no. of times a value has occurred.

Q: week of adventure often starts at the airport, or in the family car. Any news about falling gasoline…

A: *Answer: In first scatter plot :   Here the price of crude oil and the gas price seems havind a…

Q: Below are data of a correlation between two quiz scores, Quiz 1 and Quiz 2. What might you tell me…

A: Correlation shows the association between the two groups. It compares the numerical variables, not…

Q: State the conclusion of this investigation in context. 2.The graphs below depict the distributions…

A: 1. Based on the given data, we can conclude that the adjective distraction scores are relatively…

Q: The mean salary of a random sample of 50 major league baseball players for 2012 is $3.44 million…

A: Sample size n =50 Sample mean=$3.44 Population standard deviation =$0.712

Q: A simple random sample of 10 pages from a dictionary is obtained. The numbers of words defined on…

A: We have given thatMean(µ) = 48.2Sample size (n) = 10Sample mean (x̅) = 54.8Standard deviations (s) =…

Q: In the year 2033, katy perry is a leading traveling nurse. Katy is interested in reducing the mean…

A: Population mean, μ=8.6 Sample size, n=46 Sample mean, x¯=8.1  Sample sd, s=1.2 α=0.05

Q: Confidence Intervals. For each of the following problems include the confidence interval (don't…

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

Q: K Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms…

A: That is, there is no evidence to conclude that there is difference between the measurements from the…

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A: The stated claim, the parameter of interest has been measured in terms of percentage (i.e.,…

Q: Construct a 90% confidence interval estimate of the proportion of Lipitor users who will report…

A: The drug Lipitor is meant to lower cholesterol levels. In a clinical trial of 800 patients, 5%…

Q: The mean weight of an adult is 62 kilograms with a variance of 144. If 195 adults are randomly…

A: Population mean=M=62 Population variance=S2=144 Population standard deviation=√S2=√144=12 Sample…

Q: Parents have always wondered about the sex of a child before it is born. Suppose that the…

A: n=3 p=0.5 A random variable X~Binomial(n=3,p=0.5) P(X=x)=Cx30.5x1-0.53-x     ;   x=0,1,2,3

Q: 50. In which histogram (or histograms) would the 51. For which data set would we expect the standard…

A: Histogram is a graphical representation that depicts the distribution of data.  If the histogram is…

Q: Consider a random variable X that follows a uniform distribution with a= 1 and b = 4 Find the…

A: Answer: From the given data, X follows a uniform distribution, a = 1  and b = 4

Q: Find P(t <2.40) nu=26 Make sure to show your work.

A: Based on the information provided, we can assume that t follows a Student's t-distribution with…

Q: 2. For the regression model Y₁ = 3x₂ + Ei i=1,2,..., n i.e. a straight line through the origin with…

A: Given the regression model Yi=βxi+εi      i=1, 2, . . ., n

Q: When asked whether marriage is becoming​ obsolete, 796 out of 2058 randomly selected adults…

A: Sample size = n = 2058 Number of adults answering a particular survey said yes =  x = 796  Sample…

Q: eeping water supplies clean requires regular measurement of levels of pollutants. The measurements…

A: Nitrates are measured in milligrams per liter of water:- Nitrates 50 50 100 200 400 800 1200…

Q: What is the probability of randomly selecting 1 woman with a height less than 65.1 inches? (Round to…

A: The height of women ages 20-29 is normally distributed, with a mean of 64 4 inches. population…

Q: Suppose that X is a normally distributed with a mean 29 and standard deviation is 10 find the given…

A: Answer: From the given data, Mean (μ) = 29 Standard deviation(σ) = 10 X follows normal distribution,

Q: Find the P - hat and q - hat for the given data, n = 480 and X = 156 Round to three decimals

A: Answer: From the given data, n = 480 X = 156

Q: A magazine provided results from a poll of 1500 adults who were asked to identify their favorite…

A: p=0.13, n=1500, ME=±0.05

Q: in finding a confidence interval for a random sample of 35 ​students' GPAs, one interval was (2.65,…

A: The mean of your estimate plus and minus the range of that estimate constitutes a confidence…

Q: om sample of 49 audited estate tax returns, it was determined that the mean amount of additional tax…

A: Sample size n=49 Sample mean x¯=3444 Sample standard deviation s=2505

Q: A single sample T-test is to be done on a study about typhoons. Many believe that the average number…

A: As per our guidelines I can solve only first 3 subparts. Kindly post the remaining subparts again…

Q: The average number of Single-decker bus that you can see on your drive to work is 22, what is the…

A: Answer: From the given data, Average = μ=λ = 22 X follows Poisson distribution

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: The random variable X is the number of chocolate chips in an 18-ounce bag of chocolate chip cookies.…

Q: Determine the appropriate critical value for an​ upper-tailed test:a=0.025​; n=36​; sigma=5.0. The…

A: Upper tailed  n=36, standard deviations σ=5, level of significance ɑ=0.025

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: t critical value(t0)=-2.139              (from graph) The test is left tailed test

Q: 1 A probability density function of a random variable is given by f(x)=; =- 65 expected value, the…

A: A probability density function of a random variable is given by, f(x)=165 5+ 5x  ; 25≤x≤36…

Q: 9. If we omit a variable from a regression that is negatively correlated with the included…

A: If a variable that is negatively correlated with the included variables is omitted from a…

Q: Discrete or Continuous Random Variables?

A: Random Variable either can be discrete or continuous. Continuous variables are those which have…

Q: The average number of Single-decker bus that you can see on your drive to work is 26, what is the…

A: Answer: From the given data, X: Number of Single-Decker busses that you can see on your drive to…

Q: 1. You were told that the mean score on a statistic exam is 75 with the scores normally distributed.…

A: The mean score on a statistic exam is μ=75 The scores are normally distributed. The probability of a…

Q: A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet…

A: According to the given information in this question We need to find the mean of the sampling…

Q: What does the sign and actual number tell you in a correlation?

A: Correlation coefficient denoted by " r ". Correlation coefficient have value between -1 to 1.

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

A: As per policy I have calculated first question plz REPOST with note I need this question.  Null and…

Q: The random variable X is a binomial random variable with n = 17 and p = 0.4. What is the expected…

A: n=17 p=0.4 A random variable X~Binomial(n=17 , p=0.4) P(X=x)=Cxpx(1-p)n-x     ;…

Q: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1437…

A: Hypothesis is an assumption that is being tested.

Q: Q6- Answer correctly and read the question correctly, If the question is done correctly, I will…

A: Sample size, n=49 Population mean, μ=210 Sample mean, x¯=206 Sample standard deviation, s=14

Q: One study claims that the variance in the resting heart rates of smokers is different than the…

A: Sample 1(smokers): n1=9s12=581.4 Sample 2(non-smokers): n2=9s22=103.8 Level of significance, α=0.05…

Q: #17 solving with application’s of normal distribution

A: 17. Population mean, μ=875 Population standard deviation, σ=150

Q: Historically, the percentage of residents of a certain country who support stricter gun control laws…

A: The percentage of residents of a certain country who support stricter gun control laws is 54​%.…

Q: If a = .10, find the critical value,

A: Here given , Significance level = 0.10 And performing right tail test.

Q: please dont provide answer in image format thank you   60 people with smartphones were surveyed.…

A: We have given thatn = 60x = 25p̂ = x/n = 25/60 = 0.4167Confidence level (c) = 95% = 0.95Significance…

Q: Fill in the P(X=x) values to give a legitimate probability distribution for the discrete random…

A: Let, X-be the random variable, P(X) - is probability Fill in the P (X = x)values to give a…