Question * An automotive repair shop has determined that the average service time on an automobile is 130 minutes with a standard deviation of 26 minutes. What is the probability that the sample of 100 automotive services will have a mean service time at least 124.54 minutes but less than 135.98 minutes?

Q: Mean = 71kg, standard deviation = 13kg. if 46 adults are randomly selected, what is the probability…

A:

Q: A report about how American college students manage their finances includes data from a survey of…

A: Population mean = ? = 907 Sample S.D = s =205 Sample size = n =500 Sample mean = x̅ = 825

Q: A random sample of 25 observations yield a mean of 116 and a standard deviation of 12. What is the…

A: Given data,Mean μ=116sd σ=12P(X>1150)=?

Q: A research firm conducted a survey to determine the average amount of money consistent smokers spend…

A: We have given that,  Let X be a random variable from normal distribution with mean(μ) = 20 and…

Q: An article suggests a normal distribution with mean 130.8 oz and standard deviation 3.05 oz for the…

A: From the provided information, Mean (µ) = 130.8 oz Standard deviation (σ) = 3.05 oz X~N (130.8,…

Q: The sizes of car loans in North Carolina have mean $8,452 and a standard deviation $467. The…

A: The mean is 8452 and the standard deviation is 467.

Q: Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these…

A:

Q: According to the U.S. Department of Agriculture, the mean calorie intake of males 20 to 39 years old…

A: It is given that the mean and standard deviation are 2,716 and 72.8, respectively. The sample size n…

Q: 21. The mean height of a Clydesdale horse is 72 inches with a standard deviation of 1.4 inches. What…

A: Mean(µ) = 72Standard deviations (σ) = 1.4X ~ N (µ, σ )= N(72, 1.4)

Q: Suppose I have an unfair coin, it lands on heads 75% of the time.  If I flip this coin four times,…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

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

A: Given data,μ=180000σ=39000

Q: An random sample of 1200 American adults was asked, “What do you think is the most important problem…

A: Let the random variable X be the sample feel "dysfunctional government" is the most important…

Q: 11. MENSA, the high IQ society, only accepts membership into their organization if an applicant's IQ…

A: Given Data Population Mean,μ = 100.0 Population Standard Deviation,σ = 15.0

Q: The time college students spend on the internet follows a normail distrubution. At Johnson…

A:

Q: What is the probability of a male foot length between 10 and 12.5 inches? (Use the same mean of 11…

A: According to the Bartleby guideline only three sub steps of one question can be solved at one time,…

Q: After an exhaustive university-wide student survey, it was found that the IQ scores of Brac…

A: For normal distribution , z=(x-?)/? , where, ? = mean , ? = standard deviation a. we have to find…

Q: A road averages 2,115 vehicles per day with a standard deviation of 485 vehicles per day. A traffic…

A:

Q: 4) What does it mean for a sample to have a standard deviation of zero? Describe the scores in such…

A: Given that sample standard deviation is Zero. this indicates that the variance of Sample is also…

Q: Consider a dataset with standard deviation 2, mean 6.2, and a total of 186 data points. What is the…

A: The given data is - Standard deviation (σ)=2 Mean(x)=6.2 Sample size(n)=186

Q: A major application of analytics in marketing is determining customer retention. Suppose that the…

A: Given The customer leaving for another carrier from one month to the next is 0.14

Q: In a certain barangay, the Local Government Unit (LGU) distributes "ayuda" benefits to each family…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: 4. The mean score of 100 BS Biology students on a 100-item chapter test is 92. midpoint method. What…

A: Midpoint Method  Mean = x¯=x1+x2+...+xnnwhere n - number of observationsx¯=∑fixii∑ifi Deviation…

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A:

Q: 2.) The average words per minute a person can type is 40 words per minute with standard deviation of…

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

Q: According to Nielsen Company, the mean number of TV sets in a US household in 2013 was 2.24.  Assume…

A: As per our guidelines we are suppose to do first three sub parts only

Q: The driving distance to work for residents of a community is has a mean of 21 miles and a standard…

A: The objective here is to find the probability that individual drives between 10 and 20 miles to…

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: A report about how American college students manage their finances includes data from a survey of…

A:

Q: Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these…

A: Let X be a random variable with mean μ and standard deviation σ. Then, x¯-μσn follows a standard…

Q: The mean salary offered to students who are graduating from Coastal State University this year is…

A: Given that the mean = $24,230                         standard deviation = $3712…

Q: Question 3 (a) According to a recent survey, Americans get a mean of 7 hours of sleep per night. A…

A:

Q: What is the probability that a battery lasts more than four hours? b. What are the quartiles (the…

A: Let X denote the time until recharge for a battery. Given that X follows N(mean = 260, SD = 50),…

Q: In a study of the health effects of cigarettes, a random sample of 32 filtered cigarettes was…

A:

Q: A racing car consumes a mean of 103 gallons of gas per race with a standard deviation of 6 gallons.…

A:

Q: A company's mean salary is $65,000 with a standard deviation of $6,000. What is the probability that…

A: P(0<Z<2.5)=0.4938 P(0<Z<0.83)=0.2967

Q: Suppose the average age of a Tulane undergraduate is 20 years with a standard deviation of 1.2…

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Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.6…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: The average per capita spending on health care in the USA is 5274 USD. If the standard deviation is…

A: Given,mean(μ)=5274standard deviation(σ)=600

Q: University students' blood pressure can be expected to follow a normal distribution with a mean of…

A: Given data,μ=85σ=20If n=4P(X<90)=?

Q: "Given the information provided, what is the probability of obtaining a sample mean within +/- 2 of…

A:

Q: A manufacturing plant has 500 employees with average age as 35 years with standard deviation of 9…

A: We have to find out given probabiity..

Q: mean = 71 kg, standard deviation = 13 kg, If 46 adults are randomly selected, what is the…

A: Given:  μ = ​71 kg σ = 13 kg n = 46

Q: The amount of money that college students spend on food each week during the academic year is…

A: Given,mean(μ)=31.28standard deviation(σ)=11.42sample size(n)=10

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.6…

A: To find the probability of items will last longer than 9 years.

Q: Most graduate schools of business require applicants for admission to take the Graduate Management…

A: Given:  mean =527 standard deviation = 112 Let the scores of GMAT be X Scores on the GMAT are…

Q: report about how American college students manage their finances includes data from a survey of…

A: Option a

Q: 1. When conducting a hypothesis test for the population mean, you will not know the population…

A: The process will remain unchanged but the distribution. As,  you know the sample standard deviation.…

Q: An organization for people with high IQ, and eligibility requires an IQ above 131.5. Suppose the IQ…

A: Normal distribution is a continuous distribution. Normal curve is a bell shaped curve and it is…

Q: A racing car consumes a mean of 106106 gallons of gas per race with a standard deviation of 66…

A:

Q: 3. An extensive study of the cost of health care in the United States presented data showing that…

A:

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.