Marksheets of the students are normally distributed in the science class.Students score(raw score) average of 47.5 marks in science with standard deviation of 2.75 marks.Find the mean value of marks in science with

Q: 6.2 Question 17 of 17 This quiz: 17 point(s) possible This question: 1 point(s) possible Submit quiz…

A: The objective of the question is to determine which distribution should be used to construct a 95%…

Q: In a frequency distribution table with 10 classes, the class- width is 1.75 and the lowest class…

A: Number of classes: n = 10Class width: k = 1.75Lowest class boundary: L = 7.6

Q: You are testing the claim that the mean GPA of night students is different from the mean GPA of day…

A: The objective of this question is to determine the correct hypotheses for a two-sample t-test. The…

Q: A high school is running a campaign against the over-use of technology in teens. The committee…

A: sample size(n1)=200sample proportion()=0.85sample size(n2)=180sample proportion()=0.55confidence…

Q: Construct a normal quantile-quantile plot of the values provided in the accompanying data set, which…

A: The data on the diameters of 36 rivet heads in 1/100 of an inch is given…

Q: The authors of the paper "Deception and Design: The Impact of Communication Technology on Lying…

A: It is required to identify the correct assumption that must be made to ensure that the t confidence…

Q: Suppose you wanted to compare the average weekly working time of delivery drivers from two…

A: The objective of the question is to identify the appropriate statistical test to compare the average…

Q: A binomial experiment with probability of success p=0.79 and n = 6 trials is conducted. What is the…

A: Given,Probability of success, p = 0.79Number of trials, n = 6We need to calculate the probability…

Q: Based on a series of length n = 100, we fit an AR(2) model and obtain residual autocorrelations of ₁…

A: N/B Use https://latexeditor.lagrida.com/ to interpret the functions and signs from latex…

Q: b. Find the standard error of the estimate. Note: Round your answer to 2 decimal places. Standard…

A: The regression equation is of the form:Y^=β0+β1XwhereY is the dependent variable.β0 is the…

Q: he truck drivers. How might this data-collection method produce bias in obtaining an estimate of all…

A: Given that,A sticker on the rear bumper is given along with the phone number.This sticker allows…

Q: Let x red blood cell (RBC) count in millions per cubic millimeter of whole blood. For healthy…

A: It is given thatX denotes RBC count which follows a Normal distribution, havingX∼N(4.7,0.22)

Q: One thousand randomly selected adult Americans participated in a survey. When asked "Do you think it…

A: We have given that 1,000 randomly selected Americans participated in a survey.Sample size n=1000The…

Q: here is question 9 being posted

A: The decision rule is reject H0 if the test statistic is less than -1.645 or greater than…

Q: The random variable X follows a Poisson process with the given mean. Assuming μ=5, compute the…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Find the QD and coeff. of QD of the series {5,9,20,35,40,3,10}

A: It is required to find the QD (quartile deviation) and the coeff. of QD (coefficient of quartile…

Q: The heights of 1000 students are approximately normally distributed with a mean of 173.8 centimeters…

A: The question is about sampling distribution.Given :Population mean height of students (  ) = 173.8…

Q: Thanks to an initiative to recruit top students, an administrator at a college claims that this…

A: a)Hₒ: μ = 114Hₐ: μ > 114 b)t c)t = 2.28449883 d)p = 0.01773328 e)Yes Explanation:Step 1: List the…

Q: Determine whether the follow statement is true. Suppose the SAT score follows a Normal distribution…

A: The objective of the question is to verify the statement about John's SAT score based on the given…

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: Suppose the random variable x defines the breadth of male heads.The random variable x follows normal…

Q: Please Explain Solution

A: Null Hyp: There is no significant difference in proportions of the students who are fluent in…

Q: Consider an MA(1) model and suppose we have the observed values Y₁ = 0, Y₂ = −1, and Y3 = 1/3. Find…

A: In an MA(1) model (moving average model of order 1), the value at time \( t \) is determined by the…

Q: The accompanying data file shows the annual expenditures (Expenditures in $) for 100 Amazon Prime…

A: The data is given.want to calculate the z score for the smallest and largest observation from the…

Q: The distribution of claim size, X (in thousands of pounds), for a certain portfolio is modelled by…

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

Q: Round off z-values to two decimal places. Express probabilities in 4 decimal places as found in the…

A: Given,Mean, μ = 23.2Standard deviation, σ = 3.1Let X be the variable is normally distributed. That…

Q: In 2009, the average starting salary for an individual right out of college with a bachelor’s degree…

A: The upper (right) endpoint of the 80% confidence interval for the average starting salary is…

Q: Question 4 The time taken by employees at Grace Floral shop to put a bouquet together has a normal…

A: Note: There is no instruction where to round answers. A. The probability that an employee takes less…

Q: The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed,…

A: From the provided information,The null and alternative hypotheses are given as:

Q: Use 0.95 to denote the value that cuts a lower tail of 0.95 from standard Normal distribution. Use…

A: The objective of the question is to compare the value that cuts a lower tail of 0.95 from a standard…

Q: The form of the alternative hypothesis can be

A: The hypothesis is an assumption regarding the population parameter.There are two types of…

Q: If the weight assumptions were revised so that the new capacity became 20 passengers and the water…

A: Sure, the correct answer to the prompt in the image is 0.9463.The probability of the mean weight…

Q: The mean SAT score in mathematics is 587. The standard deviation of these scores is 42. A special…

A: 1) H0​:μ=587587">H1​:μ>587  b)   Z test   , df = 99  ( though we do not need df in z test) c)…

Q: Which things exist in reality, and which only exist hypothetically?…

A: SUMMARY ANSWERS Sample Data and Population Distribution are real as they are actual data collected…

Q: Determine the value of z such that the area to the right of z is 0.9906. Round the solution to two…

A: Given ,The area to the right of z is 0.9906 We have to find the value of z

Q: "In State Y, which has a complex tax structure, the sales tax varies depending on the type of goods…

A: Solution: First, let's calculate the sales tax for each item:Laptop: Sales tax = 7% of $1200 = 0.07…

Q: Hours per day R have to relax Hours per day R have to relax Group Statistics Std. Respondents sex N…

A: The given summary results for the "Independent Samples Test" is as follows:FSig.tdfSig…

Q: Suppose data shows that only 50% of breast cancer patients can survive more than 5 years. You…

A: The objective of this question is to identify the correct null and alternative hypotheses for a…

Q: Draw a normal distribution for each of the following z-score locations. Then draw a vertical line…

A: If the value of Z-score is negative then say that this is left -tail and if Z-score is positive then…

Q: 1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure…

A: a) (1.567,4.233)b) (0.914,0.4886)c) d) e) answers provided in explanation sectionExplanation:

Q: sample size   20 sample mean 8.3700 sample standard deviation 0.1895   confidence interval…

A: By analyzing the given Excel data, we can determine the p-value for a hypothesis test in which 8.3…

Q: For an AR(1) model with p = 0.6 and n = 100, the lag 1 sample autocorrelation of the residuals is…

A: detailed explanations show in explanation section.Explanation:In an AR(1) model, the residuals are…

Q: Credit card debt: Following are outstanding credit card balances for a sample of 16 college seniors…

A: The formula of the test statistic is,where, denotes the sample means denotes the sample standard…

Q: A printer contains 4 ink boxes and 5 cartridges.Find the probability of random selecting a set of 2…

A: Number of ink boxes = 4Number of cartridges = 5Total number of boxes = 4 + 5 = 9

Q: N= 150 observations were collected on a time series that was identified as a AR(2) time series. The…

A: your ans provide a explanation section have two pagesExplanation:Step 1: Step 2:Step 3: Step 4:

Q: Let X1, . . . , Xn ∼ iid N(0, τ ). Find a pivot V (X, τ ) based on a complete sufficient statistic,…

A: Then, the confidence interval for τ is:[ (n - 1) * S^2 / χ²_u(n-1) , (n - 1) * S^2 / χ²_l(n-1) ]This…

Q: Based on their records, a hospital claims that the proportion, p, of full-term babies born in the…

A: a) H0: p=0.45H1: p≠0.45 b) z c) The value of the test statistic is -0.931 d) p-value=0.352 e)…

Q: Find each of the following probabilities for a normal distribution. Z > .25 Z > -.75 Z < 1.20 Z <…

A: Here we need to find the probabilities for a normal distribution.(1) Z &gt; .25(2) Z &gt; -.75(3) Z…

Q: In a random sample of 1000 U.S. adults from February 2023, 35% say that their ideal relationship…

A: Sample size 1000 U.S. adults.Of which 35% say that their ideal relationship would not be completely…

Q: How is the hatching of water python eggs influenced by the temperature of the snake's nest?…

A: Cramer's V is a measure of association used to determine the strength of the relationship between…

Q: A recent study of the cost of dinner and tipping produced the regression equation shown below…

A: $12.26Explanation:To calculate the predicted tip amount for an $84.62 bill using the regression…