Question : suppose the average length of stay in a chronic disease hospital of certain type of patient is 65 days with a standard deviation of 15 days. if it is reasonable to assume an approximately normal distribution of length of stay. Find the probability that a randomly selected patient from this group will have a length of stay: A) less than 65 days? B) more than 50 days? C) find (a), if P(X

Q: A manufacturer produces a commodity where the length of the commodity has approximately normal…

A: Given that, Mean = 16.9 Standard deviation = 2.7 Sample size = 50

Q: According to a study done by UCB students, the height for Martian adult males is normally…

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

Q: Waiting time for all passengers waiting for the arrival for an Amtrak train follows a uniform…

A: Uniform distribution is a continuous probability distribution. This distribution is also called a…

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A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 70…

A: GivenMean(μ)=70standard deviation(σ)=17

Q: 7. The nicotine content in a certain brand of cigarettes has a normal distribution with a mean…

A: GivenMean(μ)=1.4standard deviation(σ)=0.15

Q: A student takes on average, 40 minutes, to commute from home to school and vice-versa (assume equal…

A: Given problem Given that   A student takes on average , 40 minutes , to commute from home to…

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Let X be the length of the steel rods. It is given that X is normally distributed with mean 180.6…

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A:

Q: A person's level of blood glucose and diabetes are closely related. Let x be a random variable…

A: Obtain the Z-score for the random variable X equals 85. The Z-score for the random variable X equals…

Q: Thestandard deviation of a probability distribution must be: A.anonnegative number B.anumber between…

A: The formula of standard deviation iss=Variance=∑x-x2n-1 Therefore, the value of standard deviation…

Q: The average number of acres burned by forest and range fires in a large county is 4200 acres per…

A: Given data: Mean = 4200 acers Standard deviation = 800 acers Let ,X = be the number of acers burned…

Q: Example 10: According to actuarial tables, life spans in the United States are approximately…

A:

Q: Service time for a customer coming through a checkout counter in a retail store is a random variable…

A: Given  μ=2.5σ=3.5n1=45n2=46 Consider, EX¯1-X¯2=μ1-μ2=2.5-2.5=0…

Q: If a random variable has the normal distribution with p=20 and o=5, what is the probability that it…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: If a random variable has the normal distribution with μ=20 and σ=5, what is the probability that it…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Given that, Mean =105 Standard deviation =15 X follows Normal distribution with mean 105 and…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: C.The middle 40% of Martian heights lie between what two numbers is obtained below:From the…

Q: 10. Assume that a randomly selected subject is given a bone density test. Those test scores are…

A: Let X be a continuous random variable of bone density test score is normally​ distributed with a…

Q: Men's heights are normally distributed with a mean of 68.4 in and standard deviation of 2.6 in. Use…

A: Let X be the random variable from Normal distribution with mean (μ) = 68.4 and standard deviation…

Q: A random sample of 36 junior managers in the offices of corporations in a large city center was…

A: Given: Sample size n = 36 μ = 90 Standard deviation σ = 24

Q: The average sunshine hours per year in a city have a normal distribution with a mean of 1,200 hours…

A:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

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

Q: 5. The average length of time required for students to complete a test in an Introductory Statistics…

A: Solution

Q: The highest recorded temperature during the month of July for a given year in Death Valley, in…

A: Given information- Population mean, µ = 123.8˚F Population standard deviation, σ = 3. 1˚F Let, X be…

Q: The length of eels (in cm) in a river may be assumed to be normally distributed with a mean of μ=48…

A:

Q: A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way…

A: As per guideline expert have to answer first question three subparts only dear student please upload…

Q: 9. The mean cost customers pay for gasoline in a gas station is SAR 75. The distrıbu cost of…

A: Formula : Z =(X - μ)/σ

Q: 3. The elongation of a steel bar under a particular load has been established to be normally…

A: Solution

Q: Once an individual has been infected with a certain disease, let X represent the time (days) that…

A:

Q: 1) The average number of calories in a chocolate bar is 225. Suppose that the distribution of…

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

Q: The duration of gestation in humans has a normal distribution, with an average of approximately 269…

A: Given, Mean μ = 269 Standard deviation σ = 16 Let X be gestation period

Q: a) What is the standard deviation of the time spent with a patient? b) What is the likelihood that…

A: The standard deviation of the time spent with a patient can be calculated as:   Thus, the standard…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 64…

A: GivenMean(μ)=64standard deviation(σ)=16

Q: 1.The test scores of Biostatistics examination follows a normal distribution with a mean of 60 and a…

A: As per bartleby guideline expert have to answer first question only dear student please upload other…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A:

Q: 9. The compressive strength of samples of cement can be modeled by a normal distribution with a mean…

A: Given: The mean strength of samples of cement is μ=6000 kg/cm2. The standard deviation is σ=100…

Q: 3.) The amount of tip the waiters in an exclusive restaurant receive per shift is normally…

A: It is an important part of statistics. It is widely used.

Q: A persons blood glucose level and Diabetes are closely related.  Let x be a random variable measured…

A:

Q: In a biomedical research activity it was determined that the survival time, in weeks, of an animal…

A: Let X represents the animal of the type used in the experiment. Then according to the question,…

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A: Consider X denotes consumption of canned vegetables by people in United States, which is normally…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: Here's, mean is 64 and standard deviation is 2.3. We will use z-standard normal distribution.

Q: Let X distributed as a Normal random variable with a mean of 15 and a standard deviation of  3. A)…

A: Solution: A. Let X be the random variable. From the given information, X follows normal distribution…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 74…

A: According to our guidelines we can answer only three subparts and rest can be repost.

Q: In a study of life expectancy in a certain region, the mean age at death was 70 years, and the…

A:

Q: Heights of men are normally distributed with a mean of 68.5 in and a standard deviation of 2.4 in.…

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: A population distribution has a mean of 40 and a standard deviation of 12. (a) What does the…

A:

Q: The monthly salaries of employees working in a company have a standard normal distribution with an…

A: Given Data: Let x represent the random variable Mean=1700 Standard deviation=500   X~ Normal (1700,…

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.