Suppose the time the time an average BSSE girl takes to complete semester project is normally distributed with mean 52 days and standard deviation 18 days. Suppose the project completion time of 10 girls were recorded randomly. a. What is the probability that the mean completion time for 10 girls exceeds 58 days b. What is the probability that a randomly selected girl would complete her project in less than 48 days

Q: According to a survey, a person uses a smart phone for 3 years on average and the standard deviation…

A:

Q: There is a 4% chance that smokers will have a mean pregnancy length of 266 days.  is it valid or…

A: Null and alternative hypotheses: The null and alternative hypotheses are as follows:

Q: Suppose the publisher examines the printing time for a sample of 36 books. What is the probability…

A: From given data we have : mean μ=9 std deviation σ= 4

Q: The life time of a particular steel plate used in constructions has a normal distribution with a…

A: we have given that, the construction normally distributed with mean (mu)= 80 and standard deviation…

Q: In Spring 1990, John enrolls in 9, 12, 15 or 18 credit hours with probabilities 0.1, 0.3, 0.4 and…

A: Solution: Let X be the number of hours enrolled for John. From the given information, the…

Q: The annual rainfall amount in Izmir is approximately normally distributed with mean 102.108 cm and…

A:

Q: A hybrid cars battery company produces batteries with mean life 100,000 Kilometers and standard…

A: Given : A hybrid cars battery company produces batteries with mean life 100,000 km and S.D 5000 km…

Q: V. Lifespans of Monarch Butterflies are normally distributed, with a mean lifespan of 30 days and a…

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

Q: The lives of Globewrite light bulbs made by Glowbuff Inc. have a mean of 1000 hours and standard…

A:

Q: Suppose that in a certain region of the country the mean duration of first marriages that end in…

A: Sampling Distribution of a Normal Variable :  Given a random variable X. Suppose that the…

Q: Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia,…

A: Given: X~N(μ,σ)μ=88σ=6.4

Q: The annual rainfall amount in Izmir is approximately normally distributed with mean 102.108 cm and…

A: From the given information: Consider, X be a random variable denoting the annual rainfall amount in…

Q: Delivery times for shipments from a central warehouse are exponentially distributed with a mean of…

A: Given:Note that sample mean  follows a Normal distribution with

Q: For the last 10 years, a certain school in Visayas has a passing rate of 63.25% for the bar exam. If…

A:

Q: Suppose that Google has designed its servers soo there is a probability 0.03 that the number of…

A: given data  μ = 2800σ = 860P(x>z) = 0.03x = ?

Q: An electronic component is known to have a useful life which follows a probability distribution with…

A: A Poisson distribution is a counting distribution; it counts the random number of failures occurring…

Q: The time that bank tellers taken to complete entering a transaction into the system is normally…

A: Mean(µ) = 80Standard deviations (σ) = 10X ~ N (µ, σ )= N(80, 10)

Q: The lifetime of lightbulbs that are advertised to last for 3500 hours are normally distributed with…

A:

Q: A tire manufacturer warranties its tires to last at least 20245 miles or “you get a new set of…

A: Given,  μ=26245σ=5070 Consider, the probability that a set of tires wears out before 20245 miles is,…

Q: An automotive tire producer reports that the tread life for “XYZ” series summer tires has a normal…

A: Here the treadlife follows N(50000,6000). We need to find P(X>59000).

Q: Assume that the mean daily amount of water consumed by females between the ages of 16 and 30 is 26…

A: normal distributionμ = 26σ = 8.5

Q: Suppose times for the 100m sprint for the average person are unimodal and symmetric with mean 14…

A: Consider X be a random variable which follows normal distribution indicates average time in seconds.…

Q: 5. In 2018, the braking distance of Toyota Camry cars on a wet surface follows a normal…

A: Let,        X = braking distance of the Toyota Camry cars    Then, X ~ N(122, 20)  Then, let, Z = (X…

Q: Suppose that an airline has a requirement that male members of the cabin crew are between 62 inches…

A: Approach to solving the question: 1) First find the z-score for both the given inches.2) Find the…

Q: The average speed of vehicles traveling on a stretch of highway is 67 miles per hour with a standard…

A: 2. Suppose the random variable X defines the speed of vehicles traveling on a stretch of highway.

Q: According to a report each malaysian student uses an average of 125kg of paper in a year. suppose…

A: Given,mean(μ)=125standard deviation(σ)=78

Q: Shomee is rolling a die repeatedly. What is the probability that a six will emerge for the first…

A:

Q: Q4) The time taken by a randomly selected applicant for a mortgage to fill out a certain form has a…

A: Let X be the amount of time. X~Nμ, σ The population mean is μ=10.The population standard deviation…

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Let us denote: X=time to travel between University of Santo Tomas and Rizal ParkGiven that X follows…

Q: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: A Soft drink machine outputs a mean of 25 ounces per elip. The machines output is normally, With a…

A: Given that: Population mean, μ=25 Population standard deviation, σ=4

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.