1, a sample of size 68 will be drawn from a population with mean 92 and standard deviation 24.find the probability that xbar will be greater than 90. 2, a sample size of 5 will be drawn from a normal population with mean 60 and standard deviation 12. is it appropriate to use the normal distribution to find probabilities for Xbar 3, TV set:  a Nielson company report states that the mean number of tv sets in a U.S household is 2.24. assume the standard deviation is 1.2. a sample of 85 households is drawn. what is the probability that the sample mean number of tv sets is greater than 2?

Q: 1. The average number of milligrams (mg) of cholesterol in a cup of a certain brand of ice cream is…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2010…

A:

Q: A sample of size 15 will be drawn from a population with mean 125 and standard deviation 28. a.…

A: a) sample size = 15 < 30 And it is not mention about the distribution of sample. So, It is…

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

A: given that  mean (μ) =200sd (σ) = 10

Q: 2. The average comic book has 55 pages and a standard deviation of 7 pages. Assume it has a normally…

A:

Q: An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with…

A: According to central limit theorem if the population is normal or the sample size is at least 30,…

Q: The Energetic Corporation produces electric light bulbs. When everything is going properly, the…

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

Q: In a survey of U.S. men, the heights in the 20 –29age group were normally distributed, with a mean…

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: Suppose that a population is known to be normally distributed with mean = 2,000 and standard…

A: GivenMean(μ)=2000stanadard deviation(σ)=230sample size(n)=16

Q: An insurance company knows that in the entire population of millions of homeowners, the mean annual…

A: The central limit theorem states if the sample size is greater than 30(n>30),then the sampling…

Q: 1. As studied, the average number of hours spent by senior high school students for their online…

A: The random variable X follows normal distribution. We have to find the probabilities for the given…

Q: A manufacturing firm produces resistors with mean and standard deviation of 220 Ω and 11Ω,…

A:

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

A: We have given that, In a survey of a group of​ men, the heights in the​ 20-29 age group were…

Q: If x represents a random variable with mean 117 and standard deviation 40, then the standard…

A: Given : Mean , u = 117  standard deviation, σ = 40

Q: Suppose the average annual consumption of milk in Zambia is 23.4 gallons per person with a standard…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 18.7…

A: It is given that the mean is 187, the standard deviation is 47 and the sample size is 34.

Q: 14. The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: the probability of randomly selecting 46 cigarettes with a mean of 0.863 g or less.P(M < 0.863 g)…

Q: the life expectancy of 400 people in a certain geographic region, the mean age at death was 70…

A: Given, μ=70σ=5.1n=50

Q: 2. The average daily jail population in the New Bilibid prison in Muntinlupa City is 36,295. If the…

A: The average population of jail is 36,295. The standard deviation of the population in jail is 3760.

Q: The average time for a courier to travel from Manila to Pampanga is 200 minutes, and the standard…

A:

Q: The number of people sick from imported meat products in a certain city was found to be normally…

A: Given that, The number of people sick from imported meat products in a certain city was found to be…

Q: If X is a normally distributed random variable with mean -61 and standard deviation 22, find the…

A: Solution: From the given information, X follows normal distribution with a mean µ=61 and a standard…

Q: Suppose that the latest census indicates that for every 10 young people available to work only 4 are…

A: Solution: Let X represent the number of people are employed.  The probability of people are employed…

Q: 12. Rods are taken from a bin in which the mean diameter is 8.30 mm and the standard deviation is…

A: rods follows normal distribution X ~N(8.3 , 0.4) bearings follows normal distribution    Y ~(9.7 ,…

Q: The distribution of heights for men in the United States is approximately normal, with a mean of μ =…

A: Given data, μ = 70 inches σ = 3 inches If n=16 P(X>6.1)=? =P(X>73)=?

Q: Suppose that the weights of the people in a certain office building are normally distributed, with a…

A: Given  μ=150, σ=20, n=16  Note: This probability value calculated from standard normal distribution…

Q: 2. An electronic company in laguna manufactures resisters that have aean resistance of 120 ohms and…

A: Given that: Mean resistance: μ=120Ω Standard deviation: σ=13Ω Random sample: n=40 For : Px>114

Q: The shape of the distribution of the time required to get an oil change at a 15 minute oil change…

A: Here we have μ = 16.2 min and Std (s) = 3.7min

Q: 1. The weights of deer in a national park are normally distributed with a mean of 65 kilograms and a…

A: Given that, the weights of deer in a national park are normally distributed with a mean of 65…

Q: An insurance risk manager has observed that the most common insurance product purchased by business…

A: Given Information:  Mean value = 32.2 m Standard deviation = 0.3 m

Q: If a random sample of size 14 is drawn from a normally distributed population with mean 43.5…

A: Given Sample size n = 14 Population is Normally Distributed with mean 43.5 minutes  Sample standard…

Q: According to the St. Lucie Economic Development Council, the average household income in St. Lucie…

A: Given Mean=45775 Standard deviations=1830

Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. If GPA…

A: Let X be a continuous random variable of average GPA of university students is normally​ distributed…

Q: 1.) The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs…

A: 1) Given that the mean is $55 and the standard deviation is $8. The costs are normally distributed.…

Q: A sample of size 45 will be drawn from a population with mean 10 and standard deviation 5. Find the…

A: Central Limit Theorem states that if you have a population with mean μ and standard deviation σ and…

Q: 1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a…

A: Solution

Q: The shape of the distribution of the time required to get an oil change at a 10-minute oil-change…

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

Q: Suppose that the starting salaries of MBAS at Wilfrid Laurier University (WLU) are normally…

A:

Q: Suppose the heights of 18-year-old men are approximately normally distributed, with mean 66 inches…

A: Let "x" be the heights of 18-year-old men. Draw the normal curve and shade the area between…

Q: Assume the number of physical damage losses for houses as a result of hurricane Irma in Barbuda is…

A:

Q: If a male passenger is randomly selected, find the probability that he can fit through the doorway…

A: Given,Mean μ=69.5Standard deviation σ=2.4a)P(x<72)=Px-μσ<72-μσ   =PZ<72-69.52.4…

Q: Suppose that an airline uses a seat width of 16.7 in. Assume that men have hip breadths that are…

A: Mean = 14.2 Standard deviation = 1

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

Q: In a random sample of 64 resistors, what is the  probability that its mean falls between 218 Ω and…

A: Here use central limit theorem  A manufacturing firm produces resistors with mean and standard…

Q: An electrical company  claims that the average life of the bulbs it manufactures is 1200 hrs. with…

A:

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 11.2…

A:

Q: At a certain beer bottling plant, the amount of beer that is put in a bottle is known to be…

A:

Q: Suppose that an airline uses a seat width of 16.3 in. Assume men have hip breadths that are normally…

A: It is given that the mean is 14.5 and standard deviation is 11.

Q: The weights of ice cream cartons are normally distributed with a mean weight of 10 ounces and a…

A: P(X>10.16)=1-Pz<x-μσ=1-Pz<10.16-100.6=1-P(z<0.27)=1-0.6064=0.3936 Therefore the…

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.