A. The average cost per household of owning a brand new car is 5,000. Suppose that we randomly selected 40 households. Determine the probability that the sample mean for these 40 households is more than 5,350? Assume the variable is normally distributed and the standard deviation is 1,230.

Q: The average salary for a certain profession is $63,000. ASsume that the standard deviation of such…

A: Let X be the salaries of the profession. The mean and standard deviations of X are $63000 and $34500…

Q: Given a normal population whose mean is 665 and whose standard deviation is 24, find each of the…

A: The following information has been given: The population mean is μ=665. The population standard…

Q: A racing car is one of the many toys manufactured by Mack Corporation. The assembly times for this…

A: Mean()=55standard deviation()=4The company closes at 5 P.M every day

Q: 1. A brisk walk at 4 miles per hour burns an average of 300 calories per hour. If the standard…

A: Followings are the Explanation of the question Let X be the continuous variable follows the Normal…

Q: Assume that the heights of men are normally distributed with a mean of 71.3 inches and a standard…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: . A cannery processes sardines.  Sardines have a mean length 4.54 inches with a standard deviation…

A: Solution: Let X be the length of sardines. From the given information, X has a mean µ=4.54 inches…

Q: Assume that the heights of women are normaly distributed with a mean of 63.6 inches and a standard…

A: Given,   Mean = 63.6 Standard deviation = 2.5 Sample size = 100   The objective is to find the…

Q: The population mean for the average weigh of 12 year old children is 102 pounds and the population…

A: Solution: Let X be the weight of 12 year old children. From the given information, µ=102 pounds,…

Q: Suppose the mean height in inches of all 9th grade students at one high school is estimated.

A: Population standard deviation, σ =3 inches Sample size n=6

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: At an airline company, according to the records, the mean age of pilots is 36.2 years, and the…

A:

Q: You want to determine the probability that when seven consumers are randomly selected, exactly two…

A: 1. n = 7, x = 2, p = 0.45, q = 0.552. Mean, μ = 3.15    Standard Deviation, σ = 1.31623. P(X = 2) =…

Q: The average drive to work is 9.6 miles. Assume the standard deviation is 1.8 miles. If a random…

A: Given data ,u=9.6σ=1.8n=36P9<x<10=?

Q: iven a normal population whose mean is 580 and whose standard deviation is 77, find each of the…

A: Given that μ=580,σ=77

Q: The number of thunderstorms in Florida in a calendar year is normally distributed with a mean of 80,…

A: Mean = 80 Standard deviation = 12 Sample size = 8

Q: 1. A survey found that the American family generates an average of 17.2 pounds of glass garbage each…

A: Given Population mean μ=17.2, population standard deviations σ=2.5, n=55  Note: This probability…

Q: At an airline company, according to the records, the mean age of pilots is 36.2 years, and the…

A:

Q: Assume that the heights of men are normally distributed with a mean of 69.5 inches and a standard…

A: It is given that  Mean, μ = 69.5 Standard deviation, σ = 2.1 Sample size, n = 36

Q: Given a normal population whose mean is 320 and whose standard deviation is 58, find each of the…

A: Given, Mean, μ = 320Standard deviation, σ = 58Let X be a random variable which represents the normal…

Q: The average salary for a certain profession is ​$80,000. Assume that the standard deviation of such…

A: We have to find correct answer..

Q: A dice is rolled three times a. Find the probability of getting exactly 2 fours  b. Find the mean,…

A: Let X be a random variable from Binomial distribution with parameter n and p. Mean = np  Variance=…

Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: Givensample size(n)=100Mean(x)=81standard deviation(s)=9

Q: One in ten adults in a city visited a doctor last month. If a sample of 6 adults is selected…

A: Given,  One in 10 adults visited a doctor => p = 1/10 = 0.1 Sample size, n = 6 Let X is the…

Q: Given a normal population whose mean is 580 and whose standard deviation is 37, find each of the…

A: Given that  mean = 580 standard deviation = 37

Q: Suppose the mean starting salary for nurses is $67,290 nationally. The standard deviation is…

A:

Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: a. The mean of this distribution is b. The standard deviation is c. The probability that the the…

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

Q: d the mean and standard deviation of the number of red-headed Scots in a randomly selected group of…

A: Let X be the random variable from binomial distribution with probability of  red hair for Scottish…

Q: ppose the average age of family members is 34 with a standard deviation of 4. If 100 members of the…

A: Given, μ=34σ=4 n=100

Q: All California 5th graders take a standardized test. The mean for the population of 5th graders is…

A: If a random variable X has a distribution with mean µ and standard deviation σ, then the Z-score is…

Q: Suppose exam scores are normally distributed with a mean of 70 and a standard deviation of 6. a.…

A: Given; Mean=70   Standard deviation=6 a. The probability someone receives less than a 60 on the exam…

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

A: Given,mean(μ)=680standard deviation(σ)=40

Q: 1. The average time a person spends in a library is 30 minutes. The standard deviation is 6 minutes.…

A: Since you have posted multiple questions , we will solve first question for you. To get the…

Q: Solve the problem. Assume that male Siberian huskies' weights are normally distributed with a mean…

A:

Q: Suppose that a sample of 15 randomly chosen people were put on a special weight loss diet.  The…

A:

Q: Suppose the mean blood pressure for people in a certain country is 130 mmHg with a standard…

A: given data, normal distributionμ=130σ=24n=10

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.