The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $15. Find the probability that a randomly selected utility bill is (a) less than $68, (b) between $82 and $110, and (c) more than $120.

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Given : Average bus time is: μ=31 minutes Standard deviation: σ=5 minutes The Z-score is calculated…

Q: A newsvendor wants to achieve a 0.975 in-stock probability. Demand is normallydistributed with a…

A: Introduction: A continuous probability distribution that is symmetrical on both sides of the mean is…

Q: In a large population of college-educated adults, the mean IQ is 112 with standard deviation 25.…

A:

Q: The weights of newborn for hippopotami is approximately Normal, with a mean of 86 pounds and a…

A: Given,mean(μ)=86standard deviation(σ)=10

Q: A study shows that the cost of new textbook is approximately normally distributed with a mean P142…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: The number of calories in a certain dessert is normally distributed with a mean of 210 and a…

A: Given: μ=210 and σ=12. The z-score is calculated asz=x-μσ

Q: The average number of acres burned by forest and range fires in a large New Mexico county is 4,300…

A:

Q: The average number of acres burned by forest and range fires in large New Mexico county is 4,300…

A: GivenMean(μ)=4300standard deviation(σ)=750

Q: The accountants of a known auditing firm have a mean daily salary of P850 with a standard deviation…

A: X~N(μ= 850 , σ= 82 ) μ= 850 , σ= 82 Formula for Z-score Z=(X-μ)/σ

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given Information: Population mean (u) = 24 minutes Standard Deviation (s) = 3.80 minutes Target…

Q: Salaries at a large corporation are normally distributed with a mean of $45,000 and a standard…

A: The normal distribution shows the probability value using the standard score or raw score. It is…

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 56…

A: The provided information is  µ=56 σ=3.3 P(X>60) a.P(X-µσ>60-563.3)=P(z>1.21)=0.1131   (from…

Q: A study indicates that​ 18- to​ 24- year olds spend a mean of 120 minutes watching video on their…

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

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: Let "X" be the final examination grades in an introductory statistics course. Find z-value: Note…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

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

Q: The amounts of time per workout an athlete uses a stairclimber are normally​ distributed, with a…

A:

Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…

A: We have to find probability that randomly selected person will produce more than 1000 pound wastwm

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a an of 37…

A: 37 Obtain the standard z-score for the random variable equals 26.1 liters. The standard z-score for…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A: Solution: Let X be the monthly utility bills in a city. From the given information, X follows normal…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy. Given data,Mean μ=4.56…

Q: A client has an investment portfolio whose mean value is equal to $1,000,000 with a standard…

A: A client has an investment portfolio whose mean value is equal to $1,000,000 with a standard…

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

Q: average salary for a large company is $85,000 with a

A: Given Data Population Mean,μ = 85000.0 Population Standard Deviation,σ = 20000.0…

Q: d) If they stop 30 cars during the first hour, find the mean and standard deviation of the number of…

A: Given Information: 90% of drivers do "buckle up" (wearing seat belts). (d) If they stop 30 cars…

Q: Water use per person is reported as 70 gallons per week, with a standard deviation of 10 gallons If…

A: Given that, μ=70,σ=10,n=25 (a) The probability of their sample mean being greater than 75 gallons…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A: Provided information is ; Let X be the monthly utility bill mean(μ) = 100 standard deviation(σ)=15…

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

A: P(X>96)=?

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 3.2 Let X be a random variable…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

A: Given data,Mean μ=4500000sd     σ=880,000

Q: At a customer service call center for a large company, the number of calls received per hour is…

A: At a customer service call center for a large company, the number of calls received per hour is…

Q: Analysis of the number of tourists visiting Old Fort William reveals that the annual number of…

A:

Q: The average hourly sale of a certain ride in an amusement park is P148.75/hr with a standard…

A: Given information- Population Mean µ = P148.75/hr Standard deviation (σ) = P75.76 Let X be the…

Q: A study of Sandhill Cranes determines that the distance they travel a day is normally distributed…

A: According to the provided information, Mean (μ) = 267 Standard Deviation (σ) = 86

Q: Fraveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: We want to find the probability  P(xbar>30)

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

Q: Compute the mean, standard deviation, and variance for the probability distribution below. Round the…

A: 1 0.2 0.2 1 0.2 4 0.3 1.2 16 4.8 5 0.1 0.5 25 2.5 9 0.4 3.6 81 32.4       The mean of…

Q: The average resident of Metro City produces 770 pounds of solid waste each year, and the standard…

A: We have to find probability

Q: What is the standard deviation of this probability distribution

A:

Q: The weights of newborn for hippopotami is approximately Normal, with a mean of 85 pounds and a…

A: Given  Mean, μ=85 pounds and standard deviation, σ=12 pounds

Q: The diameter of a brand of tennis balls is approximately normally distributed with a mean of 2.5…

A:

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A:

Q: A newspaper publisher has mean sales of 28,200 copies per day with a standard deviation of 3,100…

A: 1.   From the given information, the mean sales is 28,200 copies per day and the standard deviation…

Q: The amounts of time per workout an athlete uses a stairclimber are normally​ distributed, with a…

A:

Q: The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean…

A:

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=31 minutes and a…

Q: According to a PEW Research Center survey, the mean student loan at graduation is $25,000. Suppose…

A:

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…

A: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…

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.