2. Jane, Paul and Peter can finish painting the fence in 2 hours. If Jane does the job alone she can finish it in 5 hours. If Paul does the job alone, he can finish it in 6 hours. How long will it take for Peter to finish the job alone? Given and Unknown: Solution: Formula/Equation: Answer:

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately normal...

A: Given  Mean=μ=889, standard deviations=σ=53 n=35   

Q: 10. The heights of a group of 20 students were recorded to the nearest centimeters as follows: 162, ...

A: For a set of n observations, x1, x2, ... , xn, mean is given by, And the standard deviation is give...

Q: Below is a probability distribution for the number of math failures of BC students. 1 3 4 P(X) .41 ....

A: We know that  ∑P(x) = 1  First we want to find missing probability from above equation.  NOTE:- Acco...

Q: Example 16. Compute Fisher's Ideal Index number from the data given below and show that it satisfies...

A:

Q: 1. Identify Q1 of this data: 1, 2 3, 4,4, 5 ,6, 6 ,7,8,9, 16. A. 3 C. 4 B. 3.25 D. 4. 25

A: As per bartleby guideline expert have to answer first question only dear student please upload other...

Q: In the language of hypothesis testing, which of the following is an INCORRECT statement? The null hy...

A:

Q: A positive value of the correlation coefficient "r"  means_________ Group of answer choices that whe...

A: The value ρ = 0, confirms the lack of linear association between two variables. In this case, all th...

Q: The time it takes a person to make a simple cash withdrawal in an ATM machine is said to normally di...

A: We have given that.   X~N( μ , ?^2 )   μ=60 , ?=8   Z-score =( x - μ )/?  

Q: A data set includes data from student evaluations of courses. The summary statistics aren=87, x=3.59...

A: Given  x̄=3.59, n=87, s=0.64, ɑ=0.05 , μ=3.75     

Q: 1. State whether the scatter diagram shows strong positive correlation, weak positive correlation, s...

A: Since we know that Positive correlation :- Both variable move in a same direction in other words as ...

Q: A B D 54 Feb 22 2288 33 345 55 Feb 23 1414 72 16 346 56 Feb 24 1557 392 22 347 57 Feb 25 2269 738 72...

A: Data is given for (new cases, new recovery, new deaths, bulletin numbers For 90 days We have to cons...

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A:

Q: Illustration 15.1. Given the bivariate data: X:. 1 Y : 5 3 2 1 1 7 3 6 1 1 2 1 5 (a) Fit a regressio...

A: Given data is  X 1 5 3 2 1 1 7 3 Y 6 1 0 0 1 2 1 5

Q: Sketch the area under the standard normal curve over the indicated interval and find the specified a...

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days...

A: Solution-: Given: μ=267,σ=15 We find. P(X>312 days)=?  

Q: About 77% of all female heart transplant patients will survive for at least 3 years. Eighty female h...

A:

Q: The reading speed of second grade students in a large city is approximately​ normal, with a mean of ...

A:

Q: lim + 2x – 15 Evaluate x → 3 x - 9 2. 2.

A:

Q: Newborn babies in public hospitals in a certain city weighs on average 3.5 kg with a standard deviat...

A: Given,mean(μ)=3.5 kgstandard deviation(σ)=0.85

Q: From the following data calculate (i) Correlation coefficient (ü) Standard Deviation of Y (Gy) X=85 ...

A:

Q: /hat value of k will satisfy the equation P(0 <z < k) = 0.3749? lote: Write your answer using two de...

A:

Q: Homework Time 0 20 48 60 190 TV Time 0 15 60 110 225 Identify if each statement is true, false, or c...

A: Given double box &amp; whisker plot below compares homework time per night per minute with TV time p...

Q: r a standard normal distribution, find: P(-1.53 < z < 2.35)

A:   For a standard normal distribution, find:P(-1.53 &lt; z &lt; 2.35)    

Q: Determine the sample size of a research on: ( 25%) a.) 1,529 freshmen at 95% accuracy ( 5% error). b...

A: Note: As per the guidelines, answer to first three subparts will be provided. Ask other subparts as ...

Q: Assume the random variable x is normally distributed with mean u= 82 and standard deviation a =5. Fi...

A: From the provided information, Mean (µ) = 82 Standard deviation (σ) = 5 X~N (82, 5)

Q: QUESTION 11 The time in seconds, of 15 students running the race are recorded below. Find the time, ...

A: Given data is ,40, 44, 45, 58, 60, 62, 64, 67, 67, 69, 71, 75, 77, 78, 78sample size(n)=15the given ...

Q: The ages of patients undergoing a heart surgery in MJPS Hospital are normally distributed with a mea...

A: For the given data mu =43.5 ,s.d =8.5 ,x =40 p(x&gt;40) = ?

Q: elp im so confused. With venn diagram pls. thanks A group of 65 students was surveyed, and it was f...

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

Q: Construct a 95% confidence interval of the population proportion using the given information. x= 75,...

A: We have given that,  Favorable cases (X) = 75 and sample size (n) = 250  Then,  We will find the 95%...

Q: Two different types of injection-molding machines are used to form plastic parts. A part is consider...

A:

Q: An average scanned image occupies 0.6 megabytes of memory with a standard deviation of 0.4 megabytes...

A: Note: This probability value calculated from standard normal distribution table

Q: Suppose X follows a continuous uniform distribution from 1 to 5. Determine the conditional probabili...

A:

Q: An admissions director wants to estimate the mean age of all students enrolled at a college. The est...

A:

Q: Suppose the number of games in which major league baseball players play during their careers is norm...

A:

Q: X follows a Uniform Distribution from 2 to 5. What can be said of the median? Group of answer choic...

A: Given: X follows a Uniform Distribution from 2 to 5

Q: A psychologist is interested in constructing a 99% confidence interval for the proportion of people ...

A: Givenx=73n=831p^=xn=73831=0.0878confidence level = 99%

Q: Kahuna's Credit Union conducted a survey as to how long customers claimed to wait in the checkout li...

A: x       0.5       1.75       2       2.25       2.25       2.5       2.75       3.25...

Q: According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a s...

A:

Q: Example 14. Compute Fisher's ideal price and quantity index numbers for the current year on the basi...

A:

Q: A plane's consumption of gas is normally distributed. Assume the mean is 250 L per day and the stand...

A:

Q: Suppose the number of cars, X, that pass through a car wash between 4.00 pm and 5.00pm on a sunny  F...

A:

Q: Example 17. From the following data, construct an index number with 2000 as base. 2000 2001 2002 200...

A:

Q: What is the Cramer Rao lower bound and why is it important?

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per th...

Q: are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds tha...

A: Given Since the population standard deviation is unknown here and we are using sample standard devia...

Q: Find the regression equation, letting the first variable be the predictor (x) variable. Using the li...

A: We have given that,  Lemon imports (X) :- 231, 263, 353, 480, 513 Fatality rate (Y)       :- 16, 15....

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe t...

A: Given,standard deviation(σ)=23.8margin of error(E)=2.5α=1-0.90=0.1α2=0.05Z0.05=1.645        (from Z-...

Q: Y Example 12. Compute (i) Laspeyre's Price Index, (ii) Weighted Average of relatives Index number ta...

A:

Q: Problem 13 : Find mean for the following data : Class interval 50--59 40-49 30-39 20-29 10-19 0-9 Fr...

A: Mean: It is the sum of an observations divided by the total number of observations of the data set. ...

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately normal...

A: Given,sample size(n)=39mean(μ)=812standard deviation(σ)=59

Q: Express the confidence interval (35.8 % , 52.8 % ) in the form of p ± E.

A: Given that l.b =35.8 ,u.b =52.8 P hat = ? E =?