Cumulative SAT scores are approximately normally distributed with a mean of 1550. If a sample of 12 students is selecte and their standard devaition was noted to be 200, what is the probability that the average score of the sample will be at least 1500?

Q: The average age of accountants is 53 years, with a standard deviation of 5 years. If an accounting…

A: We have to find probability..

Q: Suppose the scores on an IQ test are normally distributed. If the test has a mean of 100 and a…

A:

Q: The average time it takes a music producer to complete a recording of a pop song is 53.5 minutes.…

A:

Q: In 1999, the murder rates (per 100000) for the 50 states and the District of Columbia had a mean of…

A: Given mean is 5.9 and standard deviation 6.3 sample size is 5

Q: population has a mean of 350 and a standard deviation of 25, determine the probability that a random…

A: GIVEN DATA, μ=350σ=25n=40p(335<x¯<375)=?

Q: the probability that a ball dropped from a certain height will strike the ground is 80 percent and…

A: Given: Number of trials or balls (n) = 12 Probability of success  here (p) = 0.80 Let X ~ Bin(12,…

Q: Suppose the life spans of a particular brand of car battery are normally distributed with a mean of…

A: Given that  Mean=44.7 P(X>53.7)=0.26

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: In 1999, the murder rates (per 100,000) for the 50 states and the District of Columbia had a mean of…

A:

Q: A final exam in Math150 has a mean of 73 with standard deviation 7.8. If 24 students are randomly…

A:

Q: Suppose the life spans of a particular brand of car battery are normally distributed with a mean of…

A: We have given that  Mean=45.3

Q: A traffic light is set to switch from red to green according to a uniform distribution with a mean…

A: The cumulative density function for uniform distribution is  F(X)=x-ab-a The mean of uniform…

Q: r a standardized psychology examination intended for psychology majors, the historical data show…

A: Given: The corresponding z score can be calculated as: The distribution will be normal as the…

Q: A population has a mean of 80 and a standard deviation of 7.A sample of 49 observation will be…

A:

Q: The population mean is 20 inches and population standard deviation is 4 inches. A random sample of…

A: mean = 20 s =4

Q: Provide an appropriate response. 11) The probability that a tennis set will go to a tiebreaker is…

A: Suppose a random variable x, defines the number of tiebreakers in tennis set.It is given the…

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: If the population mean weight is increased to 100.15 lb, what is the probabilitythat the sample mean…

A: As per given by the question, what is the probability that the sample mean of weight of a sample of…

Q: The mean height of 15-year-old boys is 175 cm and the variance is 64. For girls, the mean is 165 and…

A:

Q: Suppose the average credit card debt for Americans is $7000 and is not normally distributed with a…

A:

Q: In company XYZ, the success of an email to land into a spam folder is 4%. If an account received 20…

A: Solution To find the probability we will use Excel  Given data is  n= 20

Q: If the probability of busy time from a mobile phone connection is p=0.04. To find out that 4…

A: Probability distribution describes all possible values that a random variable can take within the…

Q: Suppose that the ages of all MIT students are normally distributed with mean 24.01 yrs and s.d. 5.31…

A: Given,mean(μ)=24.01standard deviation(σ)=5.31

Q: If the gondola is filled with 25 randomly selected​ skiers, what is the probability that their mean…

A: Mean = 180 Standard deviation = 44 Sample size = 25

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: University students' blood pressure can be expected to follow a normal distribution with a mean of…

A: Given data,μ=85σ=20If n=4P(X<90)=?

Q: The quality control manager at a computer manufacturing company believes that the mean life of a…

A: let  denotes the mean lifetime of computersThis follows the normal…

Q: An industrial designer wants to determine the average amount of time an adult spends building an…

A: Given information: Confidence level = 95% Significance level α=0.05 The given data is as follows:…

Q: The mean performance score on a physical fitness test for Division I student-athletes is 947 with a…

A: A normal distribution is a continuous distribution which has many real life applications. A standard…

Q: University students' blood pressure can be expected to follow a normal distribution with a mean of…

A:

Q: IQ scores are normally distributed with a mean of 100 and standard devation of 15. find the…

A: Let us consider, IQ scores are denoted by X which are normally distributed with a mean of 100 and…

Q: A study found that student weights averaged 87.3lb with a SD = 4lb.   What is the 2-decimal %…

A: Given that, μ=87.3 lbσ = 4 lb The probability that an individual student will weight below 85 lb is,…

Q: Suppose a population distribution has a mean  = 150 and a standard deviation s = 30, and you draw a…

A: Given: Mean = μ = 150 Standard deviation = σ = 30 n = 100

Q: probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have…

A: Given problem is binomial distribution Let, X: Patient recovers from a rare blood disease p=Prob. of…

Q: Suppose scores on an examination are normally distributed. If the examination scores have a mean 60%…

A:

Q: The average number of moves a person makes in his or her lifetime is 12. If the standard deviation…

A: Given,   Mean = 12 Standard deviation = 3.2 Sample size = 30

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.