The demand for a product in the next month shows a normal distribution with an average of 1250 units and a standard deviation of 100 units. Accordingly, the sales; a) What is the probability that it is more than 1500 units? b) What is the probability of being between 1250 units and 1500 units?

Q: .What is the probability that a random fastball exceeds 170 km/h?

A: Let X denote the speeds of a baseball pitcher's fastballs. It is given that The distribution of X is…

Q: Medical research has concluded that people experience a common cold roughly two times per year.…

A: The mean of the normal distribution, The standard deviation of the distribution,

Q: Weights

A: Normal probability plot is one of the technique to assess whether the data follows normal…

Q: The healing time for a broken clavicle is from a Normal distribution with a mean of 41 days and a…

A: Given,mean(μ)=41standard deviation(σ)=6

Q: The average price for a gallon of gasoline in the United States is $3.76 and in Russia it is $3.39.…

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: according to a survey conducted by wedding book, women who celebrated valentines day last year spend…

A: given data, normal distribution μ=86σ=27 probability that a randomly selected woman who celebrated…

Q: The life, in hours, of a battery produced by company A has a normal distribution with mean 20 and…

A: Introduction: Denote the random variable representing the life (hours) of a randomly selected…

Q: The mean of a normal probability distribution is 600; the standard deviation is 20. Practically all…

A:

Q: The average number of miles driven on a full tank of gas in a certain model car before its​ low-fuel…

A: It is given that the mean is 399 and the standard deviation is 36.

Q: builtrite has calculated average weekly daily sales to be 80000 with a standard deviation of 12000.…

A: Mean()=80000standard deviation()=12000 one store manager made a bet with another store manager that…

Q: The average number of mice in a 5-acre rice field is estimated to be 80. Find the probability that a…

A: Given that  The average number of mice in a 5-acre rice field is estimated to be 80. Find the…

Q: estaurant in Ohio, the number of minutes that diners spend at the table has a major impact on the…

A: X~N( μ , ?)μ=89 , ?=17Z-score =( x - μ )/?

Q: The level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful…

A: Mean == 80Standard deviation  = 6n = 16s = 6/√16 = 1.5Levels of significance = 1 - 0.05 = 0.95 or…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A recent study of teacher salaries in rural areas showed that the average salary was $30,000/year…

A:

Q: The heights of students are normally distributed with mean 161 inches and standard deviation of 4.56…

A: From the provided information, Mean (µ) = 161 Standard deviation (σ) = 4.56 X~N (161, 4.56)

Q: se a normal approximation to find the probability of the indicated number of voters. In this​ case,…

A:

Q: monthly sale of beer at a bar is believed to be approximately normally distributed with mean 2450…

A: Given that, mean μ=2450. Standard deviation, σ=400. Suppose, the monthly sale of beer is X. If…

Q: Recent report in Times showed a typical family of four spends $490 per month on food with a mean of…

A:

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: he level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful…

A: Given Data: Mean (μ)=85 Standard deviation (σ)=6 Variance (σ2)=36 Sample size(n)=16   Let X be the…

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: The probability that a randomly chosen student in a statistics class submits his/her homework on…

A: From the provided information, The probability that a randomly chosen student in a statistics class…

Q: A line waiting for tickets to an event has a normal distribution and the mean time is 23 minutes.…

A: Population mean, μ=23 Population sd, σ=4

Q: Suppose that the average number of hours a personal computer is used for entertainment is two hours…

A: GivenMean(μ)=2 hoursstandard deviation(σ)=0.5 hours

Q: 2444The weight of a mechanical component is normally distributed with a mean of  22 oz and a…

A: The weight of a mechanical component is normally distributed with a mean of 22  oz and a standard…

Q: The maternity ward at a certain hospital in a certain country in Africa is one of the busiest in the…

A: Givenon average of 60 births per dayfor one hour=6024=2.5Let x be the number of births in an…

Q: Suppose that heights of women at UT Tyler are normally distributed with a mean of 64 inches and a…

A: It is given that the mean is 64 and standard deviation is 2.4.

Q: A government sample survey plans to measure the total cholesterol level of an SRS of men aged 20-34.…

A: Note: As it is not logical that “the probability that x falls within + or -2 milligrams per…

Q: ortion of firms will earn a return between 4% and 8%? B   To the nearest percent find the…

A: given: mean (μ)= 7.5 standard deviation(σ)=2.5

Q: The heights of students are normally distributed with mean 161 inches and standard deviation of 4.56…

A: Answer: From the given data, Let X: heights of students X is normally distributed with Mean (μ) =…

Q: The finish times for marathon runners during a race are normally distributed with a mean of 195…

A: given data  normal distributionμ = 195 minutesσ = 25 minutesP(x<180 minutes) = ?

Q: According to Chebychev's theorem, the probability that the random variable Y differ from the mean u…

A: The provided information is:

Q: The lengths of human pregnancies are approximately normally distributed with a mean of 268 days and…

A: Let X is the random variable representing lengths of human pregnancies. X~Normalμ=268,σ=16

Q: On average, TV crash after 109,000 hours of continuous use. Although the time for the TV to crash is…

A: From the provided information, On average, TV crash after 109000 hours of continuous use that is…

Q: In a dorm, the weights of the students are normally distributed with mean 175 lbs and standard…

A:

Q: Find the probability that more than 60 enrolled college

A: Let p be the probability that a student who graduated from high school in a recent year enrolled in…

Q: he mean value of smokers in Peshawar is 10.36 per week with the probability of 0.56.Compute that at…

A: From the given information, The mean value of smokers in Peshawar is 10.36 per week with the…

Q: The probability that a randomly chosen student in a statistics class submits his/her homework on…

A: Given: The probability that a randomly chosen student in a statistics class submits his/her homework…

Q: The probability that a randomly chosen student in a statistics class submits his/her homework on…

A:

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.