People work on the same task, namely doing the packaging of goods. The number of items used by each person at different times is shown in the table below People A B C Working Hours 11.00 - 12.00 24 19 20 13.00 - 14.00 23 20 14 16.00 - 17.00 24 21 17 Calculate the variation between working hours and choose the correct answer. (Please show your solution) A. 8,01 B. 80,1 C. 7,01 D. 70,1

Q: For a normal variable X~ N( 54.8, 06.8), find the probability P(X < 52.7): P(X<52.7) (Round the…

A: A normal variable X~N(=54.8,=6.8)Mean()=54.8standard deviation()=6.8

Q: Life insurance companies are keenly interested in predicting how long their customers are  likely to…

A: The given scatterplot indicates the correlation between Father's age and the Customer's Age. Here,…

Q: What is the average loss for new businesses during their first year? 82 new businesses were tracked.…

A: The given data is as follows:There are 82 new businesses that were tracked and the objective is to…

Q: Decide if gender of the students has a significant influence on the relationship between exam 2 and…

A: exm1exm2Gender(M=1,…

Q: ollowing July 31 because that was the age cutoff date for nonschool baseball leagues. The table…

A: The question is about categorical data analysis.Given :To find :Test the give claim.

Q: A student wants to see if the correct answers to multiple choice problems are evenly distributed.…

A: We have given informationIn a sample, their are multiple choice questions, and each question has…

Q: Q2 Let (X₁, X₂) be jointly continuous with joint probability density function 2e (²1+2₂) 0 f(x1, x₂)…

A:

Q: A clinic offers a weight-loss program. The table below gives the amounts of weight loss, in pounds,…

A: It is assumed that µ is the population mean amount of weight loss.

Q: The inflation adjusted annual return of a diversified asset portfolio is assumed to have a normal…

A: The objective of this question is to determine the probability that a diversified portfolio will…

Q: For an F ratio to be statistically significant, the between-groups mean square must be

A: The objective of the question is to understand the condition under which the F ratio becomes…

Q: For the following conjecture, state the null and alternative hypotheses. The average weight loss of…

A: Given, the average weight loss of people who exercise 30 minutes per day for 6 weeks is less than…

Q: Is there a relationship between (X) rate of poverty (measured as a percent of population below…

A: The objective of this question is to determine whether there is a significant correlation between…

Q: A police station had to deploy a police officer for an emergency multiple times in the last four…

A: "Forecast for tomorrow" using exponential smoothing forecasting approach.Given values:Smoothing…

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: The sample average reduction in systolic blood pleasure, x¯=46.The sample size, n=13.The sample…

Q: A city plans to pay for a new parking deck through parking fees. In order to do so, the city hopes…

A: Suppose μ is the true population average parking fee per day.

Q: Question 4. Regression Analysis: Weekly Gross Revenue ($1000s) versus Televison Advertising…

A: The multiple linear regression model shows a relationship between 1 dependent variable and more than…

Q: For the standard normal variable Z, find the probability P(-0.41 <Z< 1.77): P(-0.41 < Z < 1.77)…

A: From the provided information,For the standard normal variable Z,

Q: Researchers conducted a study to determine whether magnets are effective in treating back pain. The…

A: TreatmentShamn11110.540.38s0.871.25Do not assume that the population standard deviations are equal.

Q: Suppose k is a binomial random variable with parameters n and p and let x=(k-np)//sqrt(npq) where…

A: Given:To prove:

Q: If one person is chosen at random, find the probability that they are in the '12 to 29 years' age…

A: It is given that The total number of people = 93

Q: The electric power consumed each month by a chemical plant is thought to be related to the average…

A: It is required to obtain the value of R2 for the multiple linear regression model.

Q: A13. Let the random variables X and Y have the joint Probability Density Function (PDF) [x+y, x €…

A: The X and Y are random variable and its joint pdf is fo find :a) E(X) and E(Y) b) E(XY) and Cov(X,Y…

Q: The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken…

A: The objective of the question is to determine if the change in the number of jobs is independent of…

Q: The FCC conducts broadband speed tests to measure how much data per second passes between a…

A: The objective of this question is to test the claim that the standard deviation of internet speeds…

Q: Two electric generators are connected in series to supply electricity for a company during network…

A: The 2 electric generators are connected in series to supply electricity for the company during…

Q: The purpose of this assignment is to know how to apply normal probability distribution concepts to a…

A: Given that the management team suggested order quantities are: 15,000, 18,000, 24,000, 28,000 units.…

Q: The standard normal curve is graphed below. Shade the region under the standard normal curve to the…

A: X~N( μ , ?)μ=0     , ?=1 (for standard normal distribution)Z-score =( x - μ )/?

Q: A multinomial experiment with k = 3 cells and n = 440 produced the data shown below. Cell 1 Cell 2…

A: The provided information is as follows:A multinomial experiment with .The total sample size is .The…

Q: Eight years ago, Natalia purchased a 8.25% bond for $1,000 plus brokerage fees totaling $150.…

A: The objective of this question is to calculate Natalia's rate of return on her bond investment. The…

Q: Consider the hypotheses below. Ho:²70 H, :μ < 70 Given that x = 65.9, s=11.8, n=30, and α = 0.05,…

A: From the provided information,

Q: 2) Suppose that X and Y has joint density function of bivariate normal distribution as follows: f(x,…

A: Let X and Y has joint density function of bivariate normal distribution..The joint pdf of X and Y…

Q: The margin of error of pis

A: Given that,No. of people Sample mean commute time Standard deviation The confidence interval using…

Q: What characteristics can I look for to figure out if a bar chart is statistically significant. This…

A: According to the question, To determine if a bar chart shows statistically significant differences,…

Q: Let N (t) be a Poisson process with rate A. Let 0 < s <t. Show that given N(t) = n, N(s) is a…

A: Let {N(t),t≥0} be a stochastic process and it is said to be a counting process if N(t)  represents…

Q: You are working for Wildcat Microwaveable Meals, a food prep company designed specifically to…

A: Solution

Q: Each week a student can be either up-to-date or behind. If the student is up-to- date, then the…

A: Given that, in each week a student can be either up-to-date or behind and the corresponding…

Q: Current Attempt in Progress Use the information that, for events A and B, we have P(A) = 0.5, P(B)…

A: The following information is provided,P(A)=0.5P(B)=0.2P(A and B)=0.1It is required to compute P(A or…

Q: 3- What is the confidence level for the interval ± 1.52- 1.52?

A: Given thatHere, the critical value is 1.52.

Q: Put data in a graph like the graph in the example photo. What's the percentages of kids watching tv…

A: Given the data asNameAgeHours Time watching T.VKid 1139Kid 2157Kid 3184Kid 4169Kid 5178Kid 6174Kid…

Q: nvolving 27 observations, the following estimated regression equation was developed. ý = 25.2 +…

A: Answer The regression equation [Y] = 25.2 + 5.5x1The number of predictors = 1SST = 1500SSE = 530

Q: or each predictor variable, state the P-value and determine whether the predictor variable is…

A: From the question we have this regression outputHere R square is 70.488 That means around 70.49% of…

Q: respectively. At the 0.1 significance level, test the claim that the distribution of crashes…

A: The following table is provided regarding the number of car crashes caused by drivers of certain…

Q: Age of residents in a neighbourhood 26 45 27 50 40 52 12 28 48 52 14 20 32 9 36 10…

A: The following data is given2645275040521228485214203293610365142130214037133557474253

Q: (expectation7) In a lottery every week, 2,000,000 tickets are sold for $1 apiece. If 4,000 of these…

A: Total number of tickets sold, N=2,000,000The ticket price for each ticket is $1The number of tickets…

Q: To test the belief that sons are taller than their fathers, a student randomly selects 13 fathers…

A: Hypothesis is an assumption that is being tested.

Q: Ivy League schools receive many applications, but only some can be accepted. At the schools listed…

A: The question is about categorical data analysis.Given :To find :Test whether the no. of regular…

Q: In step 3, how does (x+1)x! become (x+1)! in the denominator of the summation?

A: x!=x(x−1)(x−2)..........(2)(1)..................formula…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: 100 students were randomly selected for a national survey. Among survey participants, the mean…

A: The objective of this question is to calculate the margin of error for a survey of 100 students with…

Q: X has binomial distribution, with n = 20 and π = . Yis a random variable that takes value 10 with…

A: From the provided information, the distribution of the variable X is specified to have a Binomial…