Suppose it is known that a company completes a certain type of order in average of 48 minutes with a standard deviation of 15 minutes, and that for a second type need 30 minutes long with a standard deviation of 20 minutes. If a manger randomly observes 35 from the first type and 40 from the second type, what is the probability that the average time to complete the task of the type 1 will be more than 20 minutes from the type 2? 0.0003 O 0.9654 O 0.3121 O 0.1093

Q: 1. Suppose that the amount of a drink in a can is a normal random variable with mean u = 300ml and…

A: We have given that  X~N(mu,sigma^2) mu=300, sigma =8 , sample size n=4 Z-score =(x - mu)/sigma

Q: g the length of nails in a large box of 3-inch nails is normally Distributed with a mean of 3 and a…

A: Consider X be a random variable that represents the  length of nails in a large box of 3-inch nails…

Q: A company advertises that the batteries it sells is normally distributed with a mean life of 20…

A:

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given that mu = 50 ,s.d =15 p ( 50 <x<70 ) = ?

Q: Suppose it is known that a company completes a certain type of order in average of 48 minutes with a…

A: Let X be the time taken to complete task of type 2 and Y be the time taken to complete task of type…

Q: Suppose that the heights of men in the United States are normally distributed with a mean of 65.6…

A: The mean is 65.6 and the standard deviation is 2.7.

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A:

Q: Suppose certain coins have weights that are normally distributed with a mean of 5.945 g and a…

A: Given information- Population mean, µ = 5.945 g Population standard deviation, σ = 0.071 Sample…

Q: Suppose that a petrol station has its daily demand for petrol as normally distributed with a mean of…

A:

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A: μ = 64σ = 2

Q: Q2/ The speed of a file transfer from a server on campus to a personal computer at a student's home…

A:

Q: A company advertises that the batteries it sells is normally distributed with a mean life of 25…

A:

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A: Given that, mean = 400 standard deviation =  24 n = 144

Q: Given that 40% of employed persons are in favour of the implementation of t h e flexi-week, in a…

A:

Q: Assume that in 2009 the ABC stock returns will be normally distributed with a mean return of 1.7​%…

A: Let us denote: X=in 2009 the ABC stock returns Given that X follows a normal distribution with…

Q: it is Known that a company completes a certain type of order in average of 30 minutes with a…

A: Given  Type 1  mu1=45, n1=35, sigma1=15 Type 2 mu2=30,n2=40, sigma2=20 We want to find the…

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: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A:

Q: Suppose that an airline uses a seat width of 16.1 in. Assume men have hip breadths that are normally…

A: From the provided information, Mean (µ) = 14.5 in Standard deviation (σ) = 1.1 in Let X be a random…

Q: Suppose it is known that a company completes a certain type of order in average of 45 minutes with a…

A: Given  Type 1 mean1=45, sd1=15, n1=35 Type 2 Mean2=30, sd2=20, n2=40 We want to find the…

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: A man hieght and weight are nomally distributed with mean u= 70 inches and standard deviation a =…

A:

Q: There are 40 students in an elementary statistics class. On the basis of years of experience, the…

A: Given : Z score :

Q: Suppose that it is known that in a certain community 30% of the households have a micro-wave ovens.…

A: Given: Population proportion p = 30% p =  0.30 Sample size n = 19 Formula Used: Standard deviation =…

Q: Suppose that the mean hourly wage of all employees in a large semiconductor manufacturing facility…

A: Given data,μ=50σ=10If n=256P(48<X<52)=?

Q: Suppose a waitress keeps track of her tips, as a percentage of the bill, for a random sample of 60…

A:

Q: A consumer survey indicates that the average household spends µ = 300 TL on heating per month during…

A:

Q: A particular airline has determined that an average of 18.5 suitcases (#= 18.5) get lost each week…

A: The probability is 24.4% .   Explanation:-

Q: Suppose that from the past experience a professor knows that the test score of a student taking his…

A: Here, µ=60, σ=10, E=1.5

Q: Suppose the number of movies people rent per month is normally distributed with a mean of 4.8 and a…

A: Let x be the number of movies people rent per month which follows normal distribution with mean 4.8…

Q: Suppose that the mean height of Grade 11 male students in a certain school is 170 cm, and that the…

A:

Q: The television picture tubes of manufacturer A have a mean lifetime of 6.5 years and a standard…

A:

Q: 6. The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000…

A: GivenMean(μ)=7000standard deviation(σ)=600

Q: Assume that the heights of 6000 male students at a university are normally distributed with mean…

A:

Q: Suppose that the monthly incomes of all employees in Firm A are normally distributed with a mean of…

A: Solution: Let X be the monthly income of employee in Firm A. From the given information, X follows…

Q: Suppose that the quarterly price, X, of the stock of Company ABC is Normally distributed with mean…

A: Let X: the quarterly price of the stock of company ABCX~N(μ,σ)where mean (μ)=2.0and standard…

Q: Suppose that chemistry exam scores are normally distributed with a mean of 24 and a standard…

A: Let X denote exam scores. Given that X follows N(mean = 24, SD = 4)

Q: The Boeing 727 airliner carries 200 passenger and has doors with a height of 72 inches. Height of…

A: Given,mean(μ)=69.5standard deviation(σ)=2.4

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: In 2000, the average height of a woman aged 20-74 years was 64 inches with an increase of…

A: Let X be the height of a woman aged 20-74 years which follows normal distribution with mean 64, and…

Q: A) if $646i budgeted for next week, what is the probability the actual costs will exceed the…

A: A) The random variable X is defined as the actual costs which follows normal distribution with mean…

Q: In 2000, the average height of a woman aged 20–74 years was 64 inches with an increase of…

A:

Q: A certain machine makes electrical resistors having a mean resistance of 50 Ohms and a standard…

A: Given,sample size(n)=49mean(μ)=50standard deviation(σ)=3

Q: average salary for bank managers in a certain city is $91,900 pesos per hour with a standard…

A:

Q: 1. The nicotine content of a certain brand of king size cigarette has a normal distribution with a…

A:

Q: Suppose the teenagers that attend public high schools get an average of 5.7 hours of sleep each…

A: Mean service life is 5.7 and a standard deviation is 1.7.  Sample size 35.

Q: Given that 40% of employed persons are in favour of the implementation of the flexi-week, in a…

A:

Q: A contractor has concluded from his experience that the cost of building a luxury home is a normally…

A: Let us denote X=the cost of building a luxury home X follows a normal distribution with mean=500,000…

Q: Given that 40% of employed persons are in favour of the implementation of the flexi-week, in a…

A: As per our guidelines we are suppose to answer three sub parts.

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.