The demand for a product in the next month shows a normal distribution with an average of 1700 units and a standard deviation of 180 units. Accordingly, the sales; a) What is the probability that it is more than 1550 units? b) What is the probability of being between 1550 units and 1850 units?

Q: The average number of electronic messages received in a day on a smartphone is 15. If the standard…

A: Given information: μ=15σ=4

Q: normalized so this is the case). What is the probability that a randomly selected group of 100…

A: Given: The average IQ of a population is 100 with standard deviation 15. sample size (n) = 100

Q: Weights

A: Normal probability plot is one of the technique to assess whether the data follows normal…

Q: according to a survey conducted by wedding book, women who celebrated valentines day last year spend…

A: given data, normal distribution μ=86σ=27 probability that a randomly selected woman who celebrated…

Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A:

Q: The tread life of a particular brand of tire is a random variable best described by a normal…

A: The random variable tread life of a particular brand of tire follows normal distribution. The…

Q: The time it takes to drive through the middle of campus follows a uniform distribution with a…

A:

Q: New York City is the most expensive city in the United States for lodging. The mean hotel room rate…

A: Given that μ = 204 , σ =55

Q: Blood glucose levels are normally distributed with a mean of 85 mg/dl and a standard deviation of 25…

A: Answer: Given that:   ‘x’ is Normally distributed with                 Mean  µ =85       standard…

Q: The World Health Organization's (W.H.O.) recommended daily minimum of calories is 2600 per…

A: given data  W.H.O. minimum calories = 2600 μ = 2460σ = 500n = 49P(x¯ >2600) = ?

Q: IQ scores follow an approximately Normal distribution with a mean of 100 and standard deviation of…

A: Population mean μ =100 Population standard deviation =15

Q: The alkalinity level of water specimens collected from the Han River in Seoul, Korea, has a mean of…

A: given data  normal distribution μ = 50σ = 3.2

Q: The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard…

A:

Q: The level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful…

A: Mean == 80Standard deviation  = 6n = 16s = 6/√16 = 1.5Levels of significance = 1 - 0.05 = 0.95 or…

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: On the final exam in a large statistics class the average score was 76 with a standard deviation of…

A:

Q: Find the probability that the mean height of the sample is greater than 58 inches.

A: Assume that the height of adult females in the United States is approximately normally distributed…

Q: A recording firm wants the distribution of lengths of cuts on its playlists to have an average of…

A: Let X be the distribution of lengths of cuts on its playlists. Given mean, μ = 135 sec Standard…

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: he level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful…

A: Given Data: Mean (μ)=85 Standard deviation (σ)=6 Variance (σ2)=36 Sample size(n)=16   Let X be the…

Q: A line waiting for tickets to an event has a normal distribution and the mean time is 23 minutes.…

A: Population mean, μ=23 Population sd, σ=4

Q: Suppose a survey finds that the mean monthly rent of a two-bedroom apartment in seattle is $560,…

A: Given Information:Mean, μ=$560Standard Deviation, σ=$35

Q: Suppose that the ages of all SCC students are normally distributed with mean 24.01 yrs and s.d. 5.31…

A: Given data, Mean μ=24.01sd     σ=5.31P(X>20)=?

Q: average score of students taking a statistics final was 80 with a standard deviation of 7. assuming…

A:

Q: A government sample survey plans to measure the total cholesterol level of an SRS of men aged 20-34.…

A: Note: As it is not logical that “the probability that x falls within + or -2 milligrams per…

Q: The waiting time at a railroad crossing follows an exponential distribution, with an average time of…

A:

Q: Assume that a root beer factory’s production is normally distributed with a mean of 100,000 gallons…

A: We have to use normal distribution for finding the probability.

Q: On average, TV crash after 109,000 hours of continuous use. Although the time for the TV to crash is…

A: From the provided information, On average, TV crash after 109000 hours of continuous use that is…

Q: In a dorm, the weights of the students are normally distributed with mean 175 lbs and standard…

A:

Q: Scores on a standardized exam for 2nd graders are approximately normally distributed with a mean of…

A: Given data: Mean =72 Standard deviation  = 6

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.