According to a college survey, 22% of all students work tull time. Find the mean for the random variable X, the number of students who work full time in samples of size 16. The mean of X is (Round to 2 decimal places)

Q: Given a normal distribution whose mean is 590 and whose standard deviation is 74, find the…

A:

Q: For a normal population with µ = 100 and σ = 9, what is the probability of obtaining a sample mean…

A: According to the given information, we have Mean = 100 Standard deviation = 9 Sample size = 25

Q: Answer = Find the probability that a sample of size n = 92 is randomly selected with a mean that is…

A: given  population  mean  μ  = 120000    population standard deviation σ   = 30000     given sample…

Q: In a tech company, the time it takes for 1 worker to build a PC is a random variable with an AVERAGE…

A:

Q: How much money does a typical family of four spend at McDonald’s restaurants per visit? The amount…

A: The amount of money spend by a family of four at McDonald’s is normally distributed with mean…

Q: Suppose z is a normal random variable. If you need to find P ( Z > 1.84 ), explain how to shade the…

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

Q: A random sample of 25 observations yield a mean of 106 and a standard deviation of 12. Find the…

A: From the given information,Sample size 25, mean 106 and standard deviation 12

Q: A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9…

A: We have given that a Binomial distribution with parameters p=65% = 0.65 , q=1-p = 0.35 and sample…

Q: The operation manager at a tire manufacturing company believes that the mean mileage of a tire is…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: X follows a Normal distribution with mean = 182000 and S.D = 39000 Then z=(x-mean)/SD =…

Q: The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student…

A: 1000 0.6 600 1000000 600000 1200 0.3 360 1440000 432000 1500 0.1 150 2250000 225000

Q: Suppose the random variable xx has a normal distribution with μ=300μ=300 and σ=30σ=30. Find the…

A: Given: μ=300, σ=30.

Q: A population has a mean of u = 30. If 3 points are added to each score, what is the mean for the new…

A: Given :  Mean(μ)=30 and N=3

Q: Given a normal distribution with μ=50 and σ=5​, and given you select a sample of n=100​, There is a…

A:

Q: Suppose that y is a random variable having a normal distribution with a mean equal to 250 and a…

A: Solution: It is given that the random variable y follows the normal distribution with mean and…

Q: If a distribution is normal with μ = 60 and σ = 15, what is the z score of 40?

A:

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: What increases the likelihood that our a random sample will be representative of the population? O…

A:

Q: Since the Fair Labor Standards Act was passed in 1938, the standard work week in the United States…

A: For the given statement Select the correct choice

Q: The distribution of IQ scores for high school graduates is normally distributed with μ = 104 and σ =…

A:

Q: A final exam in science 160 has a mean of 73 with a standard deviation of 7.8. If 25 students are…

A: Given information- Population mean, µ = 73 Population standard deviation, σ = 7.8 Sample size, n =…

Q: An immigration agent at Pearson Airport in Toronto could on the average process 120 entrants during…

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

Q: it is known that the population variance equals 484. with a 0.95 probability, the sample size that…

A:

Q: Aaliyah is 74 years old. Based on a normal distribution with mean 47.8 and standard deviation 12.6,…

A: GivenAaliyah is 74 years oldx=74Mean(μ)=47.8standard deviation(σ)=12.6

Q: For a normal random variable with mean 650 and standard deviation 40, find the probability that its…

A: Given information- Population mean, μ = 650 Population standard deviation, σ = 40 Let X be the…

Q: If X is a random variable with mean 5 and standard deviation 3, then the mean of the random variable…

A: The random variable is X.

Q: If the mean and the standard deviation of a continuous random variable that is normally distributed…

A: Solution

Q: What is the probability of selecting a score greater than 50 from

A: Given μ= 55 and a σ=5.

Q: A racing car consumes a mean of 101 gallons of gas per race with a variance of 49.   If 43 racing…

A: The probability that the sample mean would differ from the population mean by greater than 2.4…

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

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

Q: Find the mean variance and standard deviation for the number of heads when 10 coins are tossed.

A: When a coin is tossed it can it can land either head or tail. Therefore, the number of outcomes is…

Q: Given a random variable having the normal distribution, with mean 26 and variance 3.8416, i) find…

A: Given that, mean(μ)=26 standard deviation (σ)= 3.8416

Q: A racing car consumes a mean of 103 gallons of gas per race with a variance of 36. If 38 racing…

A: The probability of the sample mean would be greater than 101.5 gallons is 0.9382 and it is obtained…

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

A: The provided information is:

Q: Mean = 126 millimeters-variance=64-if a random sample of 37 bolts is selected , what is the…

A:

Q: After conducting a literacy test on inmates, the evaluator realizes that the test was much more…

A: Given that after conduting a litrecy test on inmates, the evaluator realises that the test was much…

Q: The number of tickets purchased by an individual for Beckham College's holiday music festival is a…

A:

Q: For a normally distributed random variable the standard deviation is 3.7 what is the mean if 10% of…

A: Given that, σ=3.7 Consider that 10% of the distribution is less than 31.

Q: Given a non-normal population with a variance of 25 and mean of 13. If the size of a sample is n =…

A: Assume the variable of interest is X.

Q: How would I work this problem out? Thanks

A: It is provided that X follows normal distribution with mean = 300 and standard deviation = 30.Let…

Q: As the sample size n increases, the standard deviation of the sampling distribution decreases.

A: The standard error (SE) of a statistic is approximately the standard deviation of a statistical…

Q: From the past experience, 30% of the stocks are profitable. What is the probability that 5 of the 7…

A: Obtain the mean of the random variable X.   The mean of the random variable X is obtained below as…

Q: A sample of n=10 scores has SS=74.What is the estimated standard error for the sample mean?

A: Givensample size(n)=10sum of squares(ss)=74

Q: In a bottling plant, the filling machine works properly when the variance of filling amount equals…

A: a) The probability that the sample variance is greater than 0.5 is: P(s2>0.5) = P(χ2> (n-1)…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: From the provided information, Number of Girls (x) P (x) 0 0.006 1 0.031 2…

Q: find standard deviation

A: Given Number of tickets purchased = X X follows uniform distribution  (6 ,15)

Q: Determine the standard deviation of the random variable, B(600,0.4).

A: Here we need to find the standard deviation of the given binomial random variable.

Q: Still in the same context, aproximate the probability of having at most 26 jurors using the normal…

A: Here, n = 40 and p = 0.80.

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.