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Question: The weight of a population of individuals is normally distributed with a mean 65 kg and a standard deviation of 11 kg.
Based on your cases, solve the following problems using the continuous probability distribution techniques.
a) State the mean, standard deviation and variance of the population.
b) Describe how the normal curve will look when the mean decreases and the standard deviation increases.
c) Calculate the amount for the top and bottom kth percentage of the population, where k is 18%
If the true mean for Saturday sales is now $4500, what is the probability of accepting the (false) null hypothesis in (a) above (the probability of not sharing the manager's concern because of lack of evidence)?
provide a definition of the nominal, ordinal, interval, and ratio scales. Conclude your discussion with a reflection on how statistics might be utilized in your own evidence-based practice.
Let X be the number of individuals in a simple random sample of size 50 from this population who get some relief by taking ibuprofen, and let pˆ be the sample proportion. Find the probability that the value of p is in the interval
Customers arrive at a two-server system according to a Poisson process having rate λ = 5. An arrival ?nding server 1 free will begin service with that server.
When only the value-added time is considered, the time it takes to build a laser printer is thought to be uniformly distributed between 8 and 15 hours.
A medical research team wished to evaluate a proposed screening test for Alzheimer's disease.
The weight of oranges growing in an orchard is normally distributed with a mean weight of 8 oz. and a standard deviation of 1.5 oz.
The population of SAT scores forms a normal distribution with a mean of µ=500 and a standard deviation of o =100. If the average SAT score is calculated for a sample of n=25 students,
In 1998, as the advertising campaign, Nabisco Company announceda "1000 Chips Challenge," claiming. Develop the 95% confidence interval for average number of chipsin bags of Chips Ahoy cookies.
Prepare a data spreadsheet with three columns: Date, High Temperature, and Low Temperature. List the past 60 days for which data is available. Prepare ahistogram for the data on high temperatures and comment on the shape of the distribution as ob..
the time it takes to process phone orders in a small gift shop is normally distributed with a mean of 6 minutes and a
the american lighting company developed a new light bulb that it believes will last at least 700 hours on average. a
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