A population of Gala apples has a mean m=0.40 lbs and a standard deviation s=0.16 lbs. How large a sample is needed to insure the probability that at least 90% of the sample means are less than 0.49 lbs

Q: Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7.…

A: Let X be the random variable which follows normal distribution with mean 50 and standard deviation…

Q: An airliner carries 100 passengers and has doors with a height of 70 in. Heights of men are normally…

A: Given that an airliner carries 100 passengers and has doors with a height of 70 in. Heights of men…

Q: in a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: GivenMean(μ)=58650standard deviation(s)=1890sample size(n)=40

Q: The height of the students at Great Lake University is normally distributed with a mean (mu) of 68…

A: The question is about normal distribution.Given :Population mean height of students (  ) = 68…

Q: In a certain region, the mean annual salary for HVAC contractors is $53,100. Let x be a random…

A: In a certain region mean annual salary for HVAC contractors is $53100. Therefore, μ = $53,100. Let X…

Q: A population has a mean u = 70 and a standard deviation o = 30. Find the mean and standard deviation…

A: Mean = 70 Standard deviation = 30

Q: A packet of chocolate bar's content is regularly distributed, with a mean of 250 grammes and a…

A:

Q: The weight of trucks traveling on a particular section of I-475 has a population mean of 15.8 tons…

A: Central limit theorem: The central limit theorem implies that the distribution of the sample means…

Q: Consider the following data from a repeated-measures design. You want to use a repeated-measures t…

A: Given: The table of data can be given as follows: Observation A B Difference score (D=B-A)…

Q: Suppose on a CD, you like 8 out of 22 songs. If you randomly select four songs to be played once,…

A: Solution

Q: An organization claims that its product has a life of at least 19 days. if the sample size 36,…

A:

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

A:

Q: the mean for test 1 is 50. and the standard deviation is 7. then the probability that a group of 49…

A: Mean(μ)=50 standard deviation(σ)=7

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A: It is given that p is 0.10 and n is 500.

Q: he weights of the fish in a certain lake are normally distributed with the mean of 18 lb and a…

A: Answer: From the given data, Mean (μ) = 18 Standard deviation (σ) = 12 X follows normal…

Q: Canadians usually spent around $940 on Christmas presents in 2005. Assume the standard deviation is…

A: Given: Mean=μ=940 and standard deviation=σ=210. Sample size=n=70.

Q: The distance travelled to work by the employees of PUP may be modelled by a normal distribution with…

A: Answer:- Given the distance traveled to work by the employees of PUP may be modeled by a normal…

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A: Given data,Mean μ=88sd    σ=10If n=10P(X>93)=?

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: The average distribution of an unknown population is 80, and the variance is 40. The expected value…

A: Given the population parameters : The average of the distribution , μ = 80 Variance,  σ2 = 40…

Q: The time taken by employees at Grace Floral shop to put a bouquet together has a normal distribution…

A:

Q: The World Health Organization's (W.H.O.) recommended daily minimum of calories is 2600 per…

A: given data  W.H.O. minimum calories = 2600 μ = 2460σ = 500n = 49P(x¯ >2600) = ?

Q: Suppose the weight of an adult male Labrador is normally distributed with u=71.2 pounds and a…

A: Mean()=71.2standard deviation()=3.4

Q: Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7.…

A: Given,μ=50σ=7Find 96th percentile?

Q: A radar unit is used to measure speeds of bowling balls thrown by professional bowlers. The speeds…

A: Given information: The speeds of bowling bowls thrown by professional bowlers are normally…

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: A data obtained from a random sample has mean 68 and standard deviation 35. The value whose Z-score…

A:

Q: A survey found that men's heights are normally distributed with mean 68.4 in. and standard deviation…

A: The doorway height that would allow 90% of men to fit without bending is approximately 73.4…

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A:

Q: Suppose that an airline uses a seat width of 17.1in. Assume men have hip breadths that are normally…

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 normal population has a mean of 37 and a standard deviation of 8 A.What proportion of the…

A: Given Population mean μ=37, standard deviations σ=8

Q: Answer ONLY parts D,E

A: Solution

Q: Suppose that an airline uses a seat width of 17.2 in. Assume men have hip breadths that are normally…

A: Let "X" be the hip breadths of men.

Q: An airliner carries 400 passengers and has doors with a height of 75 in. Heights of men are normally…

A: Given,mean(μ)=69standard deviation(σ)=2.8

Q: Find the probability that the mean of a randomly chosen sample of 25 students scores is between 72.3…

A:

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

A:

Q: The weight of 2,000 students are normally distributed with the mean of 46kg and standard deviation…

A:

Q: A population has a mean u = 87 and a standard deviation o= 21. Find the mean and standard deviation…

A: Givenmean(μ)=87standard deviation(σ)=21sample size(n)=249

Q: The Poisson probability distribution is a function of an integer variable. True or False

A: Introduction - Poisson Probability distribution -  Statistically Poisson probability distribution is…

Q: The average weight of an apple at John's orchard is 162 grams with a standard deviation of 8 grams.…

A:

Q: For men heights are normally distributed with a mean of 69 inches and a standard deviation of 2.8…

A: The random variable X is heights of the men. It is normally distributed. X~N(μ=69,σ=2.8) The sample…

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: In a sample of size 36, the sample mean was found to be 54.6. If the probability of getting a sample…

A: Given : In a sample of size 36, the sample mean was found to be 54.6.

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.