A random sample of n = 9 is obtained from a normal distribution with µ= 40 and σ= 15.  What is the probability that the sample mean will be greater than M =43? Report to the thousandths

Q: suppose that a coin is to be tossed four times and let X represent the number of tails that can come…

A: Given: A coin is tossed four times. X represents the number of tails. The objective is to find…

Q: A normal distribution has a mean of 60 with a standard deviation of 8. If one score is randomly…

A: Let A(x) be the probability that the value of a random variable X is less than or equal to x where X…

Q: The amount of time it takes students to complete a biology exam is normally distributed with a…

A: Given that, The random variable X is the amount of time takes students to complete a biology exam It…

Q: A population forms a normal distribution with a mean of 85 and a standard deviation of 24 compute…

A: From the provided information, Mean (µ) = 85 Standard deviation (σ) = 24 X~N (85, 24)

Q: Jumbo Shrimp are those that require 10-15 shrimp to make a pound. Suppose that the number of jumbo…

A: Given: m=12.5, s=2.5, M=12.

Q: The probability that a person has immunity to a particular disease is 0.6. Find the mean number who…

A:

Q: A population has a mean of 33 and a standard deviation of 5 . What is the probability that the…

A: Population mean=33Population standard deviation=5Sample size n=58

Q: The random variable X has a uniform distribution with values between 11 and 21. What is the mean…

A:

Q: A sample of n = 6 scores has a mean of m = 5. one person with a score of x = 19 is added to the…

A: Sample size (n) = 6Mean(m)  =5

Q: mean thickness of 4 mm and a standard deviation of 1.1 mm. A simple random sample of 90 sheets of…

A: Given: Mean=μ=4Standard deviation=σ=1.1Sample size=n=90Sample mean=x¯=4.1 First, we have to obtain…

Q: Part ii) Suppose the number of printers drawn is quadrupled. How will the mean of the sample mean…

A: From the given information, The mean of the distribution is 17.57 ppm and the standard deviation is…

Q: 30% of a compnanies clients are in south africa.  a sample of 130 is randoms selected  what is the…

A:

Q: The height of students is a random variable with a normal distribution with mean = 168:5cm and…

A: We have to find the probability that a randomly chosen student has a height of more than 180.4…

Q: A normal distribution has a mean of 20 and a standard deviation of 10. Two scores are sampled…

A: The provided information is:

Q: Suppose IQ scores are normally distribut a mean of 100 and a standard deviation What is the…

A: Solution:  Let X be the IQ scores are normally distributed with mean 100 and standard deviation 15.…

Q: The distribution of annual returns on common stocks has a mean of 9 percent and a standard deviation…

A:

Q: The average number of dropouts for a school district has been 305 per year, with a standard…

A: Mean = 305 s = 50

Q: Peter collected data to find that the finishing times for cyclists in a race has a normal…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: In a normal distribution, what is the probability that a random sample of 219 with population…

A: The given sample size is 219 and population proportion is 0.17.

Q: The national average SAT score is 1027 with standard deviation σ=92  . What is the probability that…

A: Let "M" be the mean score of the SAT.

Q: ortion of firms will earn a return between 4% and 8%? B   To the nearest percent find the…

A: given: mean (μ)= 7.5 standard deviation(σ)=2.5

Q: A waitress keeps track of the tips she earns and knows that her mean tip is 15% with a standard…

A: We have been given that a waitress keeps a track of the tips that she earns and knows that her mean…

Q: In a Normal distribution, the average is 45 and standard deviation is 12. What is the probability…

A:

Q: A researcher measures the amount of sugar in several cans of the same soda. The mean is 39.01 with a…

A:

Q: Amos and Andy are students with the same ability. The potential grade that each of them would…

A: Let  X be the potential grade that Amos would receive on the test and Y be the potential grade that…

Q: Fifty students took a Mathematics exam. Assume that their scores formed a normal distribution with a…

A: Solution-: Given: μ=80,σ=4 We find x such that, P[X>x]=0.025

Q: A random sample of 18 light bulbs is drawn from a normally distributed population. The population…

A: Since, the samples are drawn from the normal population thus sampling distribution of sample 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.