Digitech's stock has an average expected return of 9.10% and a standard deviation of 13.60%. The probability of earning less than 22.7% is closest to: O A. 95% O B. 84%. O C. 68%.

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: A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their…

A: Given that.   X~N( μ , ?^2 )   μ= 115    , ?=20   Z-score =( x - μ )/?

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

A: Given that, mean, mu= 57 Standard deviation, sigma= 3.5 We know that, Z score=(X-mu)/sigma Here…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: P(X>30)=1-Pz<30-311045=1-P(z<-0.67)=1-0.2514=0.7486

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: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: The given data are: Mean, μ=31 minutes Standard deviation, σ=5 minutes n=40 For sample average, z is…

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: 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: For 300 trading days, the daily closing price of a stock (in $) is well modeled by a Normal model…

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

Q: he height of the candidate for Police Officer at JayBie Town is normally distributed with a ean 165…

A: Let X be the random variable from normal distribution with mean (μ) = 165 cm and standard deviation…

Q: Thwhe average arm height of jaguars is 16 inches, with a standard deviation of 2 inches. out of a…

A:

Q: Given a distribution with a mean of 90 and a standard deviation of 10, what is the probability of…

A: Given Information: μ=90 σ=10 x1=85 x2=110

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

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: If you were to use the normal approximation for the binomial distribution with probability of…

A: From the provided information, The probability of success = p Number of trials = n

Q: The College Board National Office recently reported that in 2011-2012, the547,038 high school…

A: a) The probability that a high school junior who takes the test will score at least 610 on the…

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

A: Since you have posted multiple question, we only provide answers of first three subparts . Please…

Q: An asset has an average return of 11.45 percent and a standard deviation of 23.04 percent. What is…

A: Given information- Mean = 11.45% Standard deviation = 23.04% We know that- A probability of 16%…

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

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

Q: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

A: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

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

A: Given that, μ=28,σ=5 and n=40 The mean and standard deviation of the sample mean 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: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

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: If the normal operating life of a car is considered to be 150,000 miles, with a standard deviation…

A: The probability that a car will last 200,000 miles is calculated as follows:

Q: A Survey among Seniors revealed that the number of hours spent Studying the week before final exams…

A: Given Mean=25 Standard deviations=7

Q: Suppose a survey finds that the mean monthly rent of a two-bedroom apartment in seattle is $560,…

A: Given Information:Mean, μ=$560Standard Deviation, σ=$35

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

A: Given that, Mean = 120 Standard deviation = 20

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

A: The mean is μ=24 and the standard deviation σ=3.8 The office coffee time is 8:50 to 9:00 AM. So he…

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

A: Let us denote: X=time to travel between University of Santo Tomas and Rizal ParkGiven that X follows…

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

A: Assume that the amount of time watching video on a smartphone per month is normally distributed and…

Q: An asset has an average return of 10.79 percent and a standard deviation of 22.71 percent. What is…

A: It is given that the mean is 10.79 and the standard deviation is 22.71.

Q: The heights of 18 year-old men are approximately normally distributed, with a mean 68 inches and a…

A:

Q: The time needed to complete a final examination in a particular college course is normally…

A:

Q: n a recent year, the average daily circulation of the Wall Street Journal was 2,276,207. Suppose the…

A: We have given that the random variable X is normally distributed with mean 2276207 and standard…

Q: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 230 and…

Q: The personal office at a large electronics firm regularly schedules job interviews and maintains…

A: Given, μ=34 minutesσ=7 minutesn=9

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=28 minutes and a…

Q: A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching video on their…

A:

Q: In recent years, the average movie ticket cost $7.89. In a random sample of 50 movie tickets from…

A: From the provided information, Mean (µ) = $7.89 Population standard deviation (σ) = $1.39 X~N (7.89,…

Q: A factory produces LED bulbs with an average lifespan of 50,000 hours and a standard deviation of…

A: Given dataMean = 50000Standard deviation = 4000If it is known that a bulb already has lasted for…

Q: In a murder trial in Los Angeles, a shoe expert stated that the heights of men with size 12 shoes is…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Brooke Henderson of the LPGA, who just won her second major last weekend, layed a round of golf and…

A: Let X be the random variable from normal distribution with mean (μ) = 21.4 and standard deviation…

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

A: Let us denote X=the time for traveling between two campuses of a university in a city via shuttle…

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: A local fast food restaurant advertises an average service time of u = 3 minutes with a standard…

A: Given Data : Population Mean,μ = 3 Population Standard Deviation,σ = 0.39