Assume that Connecticut’s Eversource company employs 36 men who work in manholes. Of 36 men are randomly selected, what is the probability that their shoulder breadth is less than 18.5 in.? does this result suggests that money can be saved by making smaller manholes with a diameter of 18.5 in

Q: A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally…

A:

Q: Based on data from the 2000 Census the average age of a Baldwin County, Alabama resident is 39 years…

A: The appropriate z-score for the average age of 100 sampled residents (i.e., the sample mean) is…

Q: On the Gulf Freeway at 7:00 AM, the average travel time from Beltway 8 to Downtown is 29.5 minutes…

A: From the given information,   Mean = 29.5 Standard deviation = 11.2   The objective is to calculate…

Q: A survey found that​ women's heights are normally distributed with mean 63.4 in. and standard…

A: a.   Obtain the percentage of women meeting the height requirement. The percentage of women meeting…

Q: A process to make dental floss produces spools with a desired mean length of 45.7 m (50 yds). The…

A: Mean length =45.7mStandard deviation =0.01mn=50X=1

Q: mean value of land and buildings per acre from a sample of farms is​$1800​, with a standard…

A: Given: Population mean value μ=1800               as the sample size is large. Population standard…

Q: A variable is normally distributed with mean 21 and standard deviation 7. Use your graphing…

A: We have given that  Mean=mu=21 Standard deviation=sigma=7 X~Normal(mu=21,sigma=7)

Q: ocolate Vendo machine is designed to discharge an average of 12 ounces with a standard deviation of…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: A typical home doorway has a height of 80 in. Given that the heights of men are normally distributed…

A: a) Suppose a random variable X, defines the height of men.

Q: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was…

A: To determine if it would be unusual for the sample mean to be less than $7600, one can compute the…

Q: A financial analyst wants to understand the preference of the people investment strategy. A randomly…

A:

Q: How many miles will be traveled by at least 75​% of the​trucks

A: The mean is 50 and the standard deviation is 11.

Q: The heights in inches of several doctor students are listed below. Find the population standard…

A: Given that, The heights in inches of several doctor students are listed below.  70 , 70 , 70 , 71…

Q: cereal, in one-pound boxes. According to FDA regulations, a one-pound box must contain at least 15.5…

A:

Q: Engineers want to design seats in commercial aircraft so that they are wide enough to fit 95% of all…

A: We have to find p95..

Q: The average licensed driver travels 1,028 miles per month in his or her vehicle. Assume the…

A:

Q: (a) Identify the claim and state H0 and Ha. What is the​ claim? A. The wind speed in Region…

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Q: ds (in mph) for a sample of five new automobile bra standard deviation of the speeds. 195, 185, 115…

A: Given : The top speeds (in mph) for a sample of five new automobile brands are listed below. 150,…

Q: If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of…

A: Let X be the random variable of the diameter of metal shafts produced in a manufacturing…

Q: According to the Environmental Protection Agency (EPA), the 2018 Toyota Camry L drives an average of…

A: The miles travelled on a full tank of gas has a mean of 420.5 miles and a standard deviation of 50…

Q: A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally…

A: Note: " Since you have posted many sub-parts. we will solve the first three sub-parts for you. To…

Q: An energy company wants to choose between two regions in a state to install energy-producing wind…

A: a) Consider that µ1 is population mean wind speed of region A and µ2 is population mean wind speed…

Q: Combined test scores were normally distributed with mean 1493 and standard deviation 345. Find the…

A:

Q: The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152…

A: mean()=1152 poundsStandard deviation()=84 pounds

Q: The average life of a car tire is 50,000 miles. The standard deviation is 2,000 miles. а.) Draw and…

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

Q: ccording to the National Association of Colleges and Employers, the 2015 mean starting salary for…

A:

Q: Asurvey found that women's heights are normally distributed with mean 63.4 in and standard deviation…

A: Given that mu = 63.4 ,sigma =2.4

Q: The auromatic hopper car loader is set to pur 86 tons of coal into each car. The actual weights of…

A: Given: μ=86σ=1.4 Required: P X<85.5=?

Q: Please answer the following Data Managment question. Please make sure the answers are correct and…

A: a) Sketch of the DistributionThe normal distribution, also known as the Gaussian distribution, is a…

Q: A vet records the weight of all the dogs she has seen in the last week the data is recorded below in…

A:

Q: All the houses in Stanton county have a mean size of 1650 square feet with a standard deviation of…

A:

Q: 4. Manhole covers must be a minimum of 22 in. in diameter, but can be as much as 60 in. in diameter.…

A: X~N(18.2,1)n=36

Q: According to the website www.torchmate .com, “manhole covers must be a minimum of 22 in. in…

A: Obtain the standard z-score for the random variable X equals 22. The standard z-score for the random…

Q: The annual per caplta consumptlon of bottied water was 31.1 gallons. Assume that the per capita…

A: Given μ=31.1 and σ = 11  a)  P(more than 36) = P(x>36) Px-μσ>36-31.111 Pz>0.44 = 0.328

Q: In a study on infants, one of the characteristics measured was head circumference. The mean head…

A: We have given that.sample size (n) = 8Sample mean (x̅) = 34.5Standard deviations () = 2.3Confidence…

Q: The pressure in a household water pipe averages 58 degrees PSI and has a standard deviation of 4…

A: Solution : Given information: μ= 58 Process average σ= 4 process standard deviation LSL= 40 Lower…

Q: a. Given that the gondola is rated for a load limit of 3750 Ib, what is the maximum mean weight of…

A: a. Given that the gondola is rated for a load limit of 3750 lb, what is the maximum weight of the…

Q: A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally…

A: Given that Mean = 196 ,s.d = 42 Maximum mean weight = ?

Q: In a normal distribution, what percent of information falls within one standard deviation of the…

A: In a Normal Distribution, within one standard deviation of the mean

Q: If the standard deviation of the lifetimes of vacuum cleaners is estimated to be 300 hours, how…

A: 97% ci for mean.  margin of error (E) = 40 σ = 300 n = ?

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.