Time taken by a randomly selected applicant for a mortgage to fill out a certain form has a normal distribution with mean valu min and standard deviation 3 min. If five individuals fill out a form on one day and six on another, what is the probability that sample average amount of time taken on each day is at most 11 min? (Round your answer to four decimal places.)

Q: The time it takes to grade an test has a mean of 5.45 minutes and a standard deviation of 1.2…

A: Given that.   X~N( μ , ?)   μ=5.45    , ?=1.2   Z-score =( x - μ )/?

Q: Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long…

A: Obtain the Z-score for the random variable X equals 60.5. The Z-score for the random variable X…

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: For a population With a mean of 75 and a standard deviation of 12, what is the probability that a…

A:

Q: "Ch6. Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=31 minutes and a…

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

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

Q: A sample of 235 students was taken for an exploratory study. Each member of a random 35 of these…

A: Since the sample size is sufficiently large, and the population standard deviation is known, the…

Q: Suppose that the monthly charges for cell phone plans in the United States are normally distributed…

A: Let:Monthly charges for cellphone plans = xGiven that:Monthly charges for cellphone plans (x) in the…

Q: If x is a normally distributed variable with a mean of 151.7 and a standard deviation of 21.9, what…

A: GivenMean(μ)=151.7standard deviation(σ)=21.9

Q: Suppose one value is selected from a uniform distribution with a = 0 and b = 11. What is the…

A: Given: X~U(0,11) a=0 b=11

Q: Bryse is 27 years old. Based on a normal distribution with mean 47.8 years and standard deviation…

A: GivenBryse is 27 years oldx=27Mean(μ)=47.8standard deviation(σ)=12.6

Q: Service time for a customer coming through a checkout counter in a retail store is a random variable…

A: GivenMean(μ1)=4.0Mean(μ2)=4.0standard deviation(σ1)=2.5standard deviation(σ2)=2.5sample…

Q: Assume the values of accounts receivable by a corporation are distributed with a true mean of…

A:

Q: Ava's morning routine is normally distributed and independent. She has been tracking her time from…

A: Let X and Y are the first and second mornings. It is given that X and Y are independent and…

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A:

Q: If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of…

A: Let X be the random variable of the diameter of metal shafts produced in a manufacturing…

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: The time taken to complete a mathematics test is normally distributed, with an average time (u) of…

A: We have that Population mean =35 Population standard deviation =8.5

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A: GIVEN DATA, IQ scores are normally distributed μ =100σ=15 n=150probability a random sample of 150…

Q: n the country of United States of Heightlandia, the height measurements of ten-year-old children are…

A: It is given that the mean is 54.6 and standard deviation is 1.5.

Q: You obtained IMDB scores of all movies and see that they are normally distributed with a mean of 6.7…

A:

Q: Traveling between two campuses via shuttle bus takes, on average, 28 minutes with a standard…

A:

Q: Suppose y is drawn from a normal distribution with mean 5 and standard deviation 3. Suppose three…

A: Given: Let Y follows normal distribution. Mean of Y = μ=5 Standard deviation of Y = σ=3 Number of…

Q: Suppose the average weight of a male US resident aged 20 to 30 years is 160 pounds with a standard…

A:

Q: Suppose that the height distribution of students in your class was normally distributed with mean 68…

A:

Q: The acidity of human​ blood, measured on a pH​ scale, is a normal random variable with a mean of 7.4…

A:

Q: While checking receipts at Reds, it was determined that the average amount spent on food per table…

A:

Q: The annual salary for an emergency room nurse is a normally distributed random variable with a mean…

A: Suppose the random variable x defines the annual salary for an emergency room nurse.

Q: A professor at a university gives her large class an examination and finds that the scores follow…

A: mean = 73 sigma = 8

Q: According to the Niesien Company the mean number of TV sets in a US household in 2013 was 2.24…

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: After collecting the data, Maria finds that the employee turnover for a certain company is normally…

A:

Q: The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio, varies according…

A: Given data,μ=21σ=10P(15<X<25)=?

Q: a sample size of 49 drawn from a population with a mean of 36 and a standard deviation of 15 for the…

A:

Q: Assume that blood pressure readings are normally distributed with a mean of 123 and a standard…

A: