The demand for high-grade gasoline at a service station is normally distributed with mean 27,009 gallons per day and standard deviation 4,530. Find two values that will give a symmetric 0.95 probability interval for the amount of high-grade gasoline demanded daily.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.8 and a standard…

A: Let "X" be the IQ score of the adults.

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: According to a study done by Pierce students, the height for Hawaiian adult males is normally…

A:

Q: The weight of small dogs can be modelled by a normal distribution with a mean weight of 8.4 kg and a…

A: The provided information is:

Q: Let μ be the mean annual salary of Major League Baseball players in 2002. Assume that the standard…

A: From the provided information, Standard deviation (σ) = 99000 Sample size (n) = 50

Q: A factory produces nails, for which the length is normally distributed with the mean of 4mm and…

A: We have to find out given probability and no. Of rejected...

Q: A Cuckoo Maran hen lays a mean 300 eggs per year with a standard deviation of 12.7 eggs. The…

A:

Q: Find the probability that 1 man has weight greater than 160 lb. Assume that weights of males are…

A: Let X represent the random variable Mean=182.9 SD=40.8   X~ Normal (182.9, 40.82)

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: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: It is an important fact in statistics . It has got wide applications in all statistical fields .

Q: Find the probability that an observation taken from a standardnormal population will be more than…

A: From the provided information, The observation is taken from a standard normal population. Mean for…

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: Find the indicated probability. The lengths of humpback whales' pregnancies are normally…

A: x = length of human pregnancies Mean μ = 330 standard deviation (σ) = 25

Q: Suppose the weight of an adult male Labrador is normally distributed with u=71.2 pounds and a…

A: Mean()=71.2standard deviation()=3.4

Q: Find the probability that a randomly selected adult has an IQ greater than 129.9.

A: Let X denote the IQ scores. Given that X follows N(mean = 98.6, SD = 18.5), then Z = (X - mean)/SD…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A:

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 average GPA at a college is 2.79 with a standard deviation of 0.6. Find the probability that 7…

A: Let X, be the random variable of average GPA at a college follows Normal distribution with a mean…

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

A:

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 lengths of large wooden beams are Normally distributed with mean 5 m and standard deviation 10…

A: Let x be the length of large wooden beams are normally distributed with mean μ1=5 m and standard…

Q: Assume the probability that a maple tree at age 5 grows less than 130 cm is equal to 0.1. If the…

A:

Q: The average number of acres burned by forest and range fires in a large county is 4,200 acres per…

A: Note:- Since you have posted a question with multiple subparts we will provide solutions only to the…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 95.9 and a standard…

A: Given: Mean μ = 95.9 Standard deviation σ = 15.6 Formula Used: Z-score: Z = X-μσ

Q: The amount of daily sales of a candy shop in weekdays is approximately normally distributed with a…

A: Let us denote: X=the amount of daily sales of a candy shop in weekdays Given that X follows a normal…

Q: The amount of milk sold each day by a grocery store varies according to the Normal distribution with…

A: It is given that the mean is 130 and the standard deviation is 10.

Q: A population is normally distributed with mean 15 and standard deviation 2.6. Find the probability…

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: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: It is given that the test scores follow normal distribution with mean 0 and the standard deviation…

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: Each month, a public market in Batangas generates an average of 30 pounds of plastic for garbage or…

A: Mean(µ) = 30Standard deviations (σ) = 4X ~ N (µ, σ )= N (30, 4)

Q: Assume females have pulse rates that are normally distributed with a mean of 72 beats per minute and…

A: Given that: Mean = 72 beats S. D. = 12.5 beats Sample size (n)  = 25 By using standard normal…

Q: suppose the walking step lengths of an adult males are normally distributed with a mean of 2.7 feet…

A: Given that  Mean=μ=2.7 Standard deviation=σ=0.3 Sample size=n=70 X~Normal(μ=2.7,σ=0.3)

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: A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean…

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

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.