What is the distribution of XX?      XX ~ N(   ,   ) What is the distribution of ¯xx¯?   ¯xx¯ ~ N(   ,   ) For a single randomly selected movie, find the probability that this movie's production cost is between 54 and 58 million dollars.

Q: If a woman is 5 feet 11 inches tall, what is her z-score (to 4 decimal places)? z =    Who is…

A:

Q: The mean lifetime of a wristwatch is 25 months, with a standard deviation of 5 months. If the…

A: According to the provided information, wristwatch X~N(25, 5)

Q: students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally…

A:

Q: a. z=+2.00 z=+0.50 z = −1.00 z = −0.25

A: a. The location of z-score equal to +2.00 is, z=x-μσ+2=x-μ20x-μ=+40 Thus, z=+2.00 is a location that…

Q: A frontliner commutes daily from his home to work. The average time for a one-way trip is 35…

A: Let , X be the time Let , X→N(μ=35 , σ=5) Since , his work starts ate 9:00 AM and he leaves his…

Q: Researchers at a weather center in the northeastern United States recorded the number of 90° days…

A: Solution: Given information: n= 4 Sample size μ=9.6 Population mean σ=1.9 Population standard…

Q: (a) The average age of Amtrak passenger train cars is 19.4 years. If the distribution of ages is…

A: Solution

Q: The heights (in inches) of males in the U.S. are believed to be normally distributed. The average…

A:

Q: The heights of adult men in America are normally distributed with a mean of 69.1 inches and a…

A: Given For menMean(μ)=69.1standard deviation(σ)=2.68For womenMean(μ)=64.7standard deviation(σ)=2.52

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: Solution

Q: The height of 1000 students are normally distributed with a mean of 170.5 centimeters and a standard…

A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you.…

Q: Suppose the distribution of maximum monthly January temperatures in Sydney is normal with mean, μ =…

A:

Q: On a dry surface, the distribution of the braking distances (in meters) of Honda Accords can be…

A: It is given that the braking distance follows N (45, 0.5). The probability that the breaking…

Q: The duration of gestation in healthy humans is approximately normally distributed with a mean of 280…

A:

Q: The finished inside diameter of a piston ring is normally distributed with a mean of 10 centimeters…

A: From the given information, let X be the diameter of a piston ring. Mean diameter of a piston ring…

Q: Based on the records of the Admissions Office of University X, the mean score of all Grade 11…

A:

Q: at a company, the data set containing the ages of aplicants for a particular job was normally…

A: The mean is 30 years and the standard deviation is 3.5 years.

Q: The mean weight of 500 male students at a certain college is 151 lb and the standard deviation is 15…

A:

Q: for a population with a standard deviation of 0.03 and mean of 3.08, draw a bell shaped curve,…

A:

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 120…

A:

Q: In a course where the mean final exam grade is 68 with a standard deviation of 6.5, the grading…

A: Consider X be a random variable which follows normal distribution indicating the final exam grade…

Q: The heights of two year old females is approximately normally distributed with a mean of 33.7 inches…

A: Solution: Let X be the heights of two year old females. From the given information, X follows normal…

Q: The heights of 1000 students are normally distributed with a mean of 174.5 centimeters and a…

A: From the provided information, Population size (N) = 1000 Mean (µ) = 174.5 cm Standard deviation (σ)…

Q: the quality grade point averages of 300 college freshmen follow approximately the normal…

A: Given: X~N(μ,σ)μ=2.1σ=0.5 n=300

Q: The total cholesterol levels of a sample of men aged 3544 are normally distributed with a mean of…

A: (a) The random variable X is defined as the total cholesterol levels of a sample of men aged 35-44…

Q: The heights of adult men in America are normally distributed, with a mean of 69.5 inches and a…

A:

Q: When the weight of a parcel of oranges was measured, it was observed that the average 190 grams and…

A: Given: Population mean μ=190 Population standard deviation σ=25 Let X be the weight of a parcel X ~…

Q: In a factory producing parts for an electronic appliance, the length of a large  number of parts…

A: From the provided information, Mean (µ) = 3 Standard deviation (σ) = 0.05 X~N (3, 0.05) Here X be a…

Q: Suppose that the middle 95% of average scores in the NBA per player per game fall between 2.01 and…

A: Given that the middle 95% of average scores in the NBA per player per game fall between 2.01 and…

Q: The mean value of land and buildings per acre from a sample of farms is ​$1200​, with a standard…

A: Given that, the value of land and buildings per acre from a sample of farms have…

Q: In a random sample of 10 cell phones, the mean full retail price was $523.30 and the standard…

A:

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A: The given question requires accurate answers, hence I will use excel to solve this question.…

Q: The time taken by the rider to deliver foods to the Block Tuah is normally distributed with a mean…

A:

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: We have given that.   X~N( μ , ?^2 )   μ =118 , ? =15   Z-score =( x - μ )/?

Q: Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed…

A:

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

A: From the provided information, Mean (µ) = $1800 Standard deviation (σ) = $200 X~N (1800, 200) Sample…

Q: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A:

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

A: Given,sample size (n)=50sample mean(μ)=268standard deviation (σ)=15

Q: . The scores of 400 applicants who took the examination in a certain company approximate normal…

A:

Q: b) If there are 3.000 plants in the field, approximately how many will be taller than 71 in?

A: Here use basic of normal distribution

Q: The line width for semiconductor manufacturing is assumed to be normally distributed with a mean of…

A: (A) Obtain the probability that a line width is greater than 0.72 micrometer. The probability that a…

Q: An engineer working for a manufacturer of electronic components takes a large number of measurements…

A: GivenMean(μ)=2.340standard deviation(σ)=0.056

Q: a) A study has shown that 25% of all college textbooks have a price of RM 200 or higher. It is known…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: The results of a national survey showed that on average, adults sleep 6.9 hours per night.Suppose…

A: The normal distribution is a continuous distribution which has so many real-world applications. A…

Q: The heights of adult men in America are normally distributed, with a mean of 69.4 inches and a…

A:

Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

A: Let X denote the  body temperatures of a group of healthy adults have a​ bell-shaped distribution…

Q: A set of final examination grades in an introductory statistics course was found to be normally…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: The systolic blood pressure (BP) of adults in the USA is nearly normally distributed with a mean of…

A: Solution: Let X be the systolic blood pressure of adults in the USA. From the given information, X…

Q: The mean weight of 500 male students at a certain college is 151 lb and the standard deviation is 15…

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.