The distribution of the number of gallons of water used for taking a shower in the United States are skewed right. Some people take long showers using as much as 63 gallons compared to the average of 17.2 gallons. A conservationist is interested in the mean number of gallons of water used in college apartments housing 4 students. Assuming a standard deviation of 4.2 gallons for

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: From the given information,   Mean  = 35 Standard deviation = 7.5   The objective is to find the…

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: We have given that Mean(µ) = 281 Population Standard deviations (σ) = 47 Sample size (n) = 50

Q: The average expenses of the Dela Cruz Family is ₱12,600 every half of a month with a standard…

A: Given data,μ=12600σ=1570P(X<11000)=?

Q: In a study of work patterns in one population, the mean weekly family time devoted to child care is…

A:

Q: uppose that the miles-per-gallon (mpg) rating of passenger cars is normally distributed with a mean…

A:

Q: 10. An education finance corporation claims that the average credit card debts carried by…

A:

Q: If the mean height of a population of students is 68 inches with standard deviation 3 inches, what…

A: Given that      The mean height of a population of students is 68 inches with standard deviation 3…

Q: The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student…

A: Given Observation and Calculation

Q: According to the study, the average number of hours that the student spent studying per week in the…

A: From the provided information, Mean (µ) = 56 hours Standard deviation (σ) = 14 hours X~N (56, 14)

Q: Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia,…

A: Solution: a. Let X-bar be the average speed of passenger. From the given information, X-bar follows…

Q: Q/The speed of a file transfer from a company server to any employee personal  computer is normally…

A:

Q: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…

A: We have to find given probability.....

Q: A restaurant chain has two locations in a medium-sized town and, believing that it has oversaturated…

A: Step-by-step procedure to obtain the test statistic using Ti83 calculator. Press STAT. Press STAT…

Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 23.08,…

Q: A web site reported in 2018 that 47% of all web traffic comes from laptops and desktops. Based on a…

A:

Q: Suppose math scores on the SAT are normally distributed with a mean of 500 and a standard deviation…

A:

Q: Based on Aircraft Safety Council of Country PQR, an average of 18 aircraft accidents occurred each…

A: Given,an average aircraft accidents occurred each year is 18so an average aircraft accidents…

Q: Tompkins Associates reports that the mean clear height for a Class A warehouse in the United States…

A:

Q: 2. The average daily jail population in the New Bilibid prison in Muntinlupa City is 36,295. If the…

A: The average population of jail is 36,295. The standard deviation of the population in jail is 3760.

Q: When testing a hypothesis about a single mean, if the sample size is 51 and the population standard…

A: From the provided information, Sample size (n) = 51 The population standard deviation is known.

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A: Given,sample size(n)=60mean(μ)=281standard deviation(σ)=47

Q: 6. The Ministry of Health reports that the average cost of rehabilitation for earthquake victims is…

A: Given  Mu=25750, Xbar=25250, s=3250, n=144

Q: The Jamestown Steel Company manufactures and assembles desks and other office equipment at several…

A: Hypothesis Testing The use of statistics to calculate the likelihood of whether a hypothesis is true…

Q: In a classic statistical study of plants, R. A. Fisher found that a compound measure of dif-ferences…

A: Given: Population mean μ=33.816 Population standard deviation σ=4.781 Sample size (n) = 50 As per…

Q: Use the CLT again to determine the probability that the mean taxable wages in James' sample of 50…

A: It is given that mean is 28.29 and the standard deviation is 33.493.

Q: A study at a college in the west coast reveals that, historically, 45% of their students are…

A: a) It is known that, the mean of the sampling distribution of sampling distribution, p-hat is equal…

Q: Suppose that the caffeine in one tablespoon of Folgers is normally distributed with a mean of 45 mg…

A:

Q: An experiment investigated whether the stem diameters of a tulip would change depending on whether…

A: Hello, thankyou for the question. According to our honor code we can answer only three sub parts at…

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

Q: A final exam in Reindeer Research Studies has a mean of 60 and a standard deviation of 5. If 25…

A: It is given that the mean is 60, the standard deviation is 5 and the sample size is 25.

Q: Suppose that we have a normal population with mean 7 and standard deviation 4.   What is the…

A: From the provided information, Mean (µ) = 7 Standard deviation (σ) = 4 Sample size (n) = 6

Q: The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal,…

A: Given: μ=184.4σ=7.2N=53

Q: If the mean is two, the standard deviation is one, and a value for a normally distributed random…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given,mean(μ)=35standard deviation(σ)=7.5sample size(n)=50

Q: what is the mean and stanadard deviation of a uniform (6,15) random variable?

A:

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: A chemical engineer processes 20 pilot batches and has the following active ingredient yield…

A: The probability of getting at least 50.5 grams per litre if the true mean yield is 52 grams per…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Solution: We are given:

Q: 1. Suppose the height of a tomato plant follows a normal distribution with a mean of 74.5…

A:

Q: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: According to Runzheimer International, a typical business traveler spends an average of $281 per day…

A:

Q: Suppose a Realtor is interested in comparing the asking prices of midrange homes in Peoria,…

A: Here we are trying to test whether the mean of two population differs significantly or not. It is…

Q: Suppose that the starting salaries of MBAS at Wilfrid Laurier University (WLU) are normally…

A:

Q: Rob Raydo, a data analyst in a certain bank, found that the mean amount of credit card debt per…

A: Solution: Note: Hello! As you have posted 2 different questions, we are answering the first question…

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

Q: 6. Suppose that the average outstanding credit card balance for young professionals is 11,200 with a…

A: Given : The average outstanding credit card balance i.e. μ=11200 Standard deviation i.e. σ=2600…

Q: Traveling between EDC campus and Gulshan campus of Iqra university via shuttle bus takes, on…

A: The average time taken by the bus is 28 minutes. The standard deviation of the time taken by the bus…

Q: Consider two data sets from sampled populations, one with a high standard deviation and one with a…

A: HERE GIVEN TWO DIFFERENT DATA SET One has High standard deviation while second has low standard…

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given, The proportion of light bulbs will last more than 60 hours is obtained as- The required…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A: Given dataMean = 35Standard deviation = 7.5Sample size (n) = 40probability that the sample mean will…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.