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1. A population has a mean of 50 and a standard deviation of 6. (a) What are the mean and standard deviation of the sampling distribution of the mean for N = 16? (b) What are the mean and standard deviation of the sampling distribution of the mean for N = 20? 2. Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find: a. the probability that a single score drawn at random will be greater than 110 b. the probability that a sample of 25 scores will have a mean greater than 105 c. the probability that a sample of 64 scores will have a mean greater than 105 d. the probability that the mean of a sample of 16 scores will be either less than 95 or greater than 10
Develop a 95% confidence interval estimate of the population mean sales price and population mean number of days to sell for Gulf View condominiums. Interpret your results.
1. hint let pi 0.02 as shown in the table for nofree premium channels.a. pxlt 3 b. px 0 px 1 c. px gt 4 1 - px le4
What can we say about the shape of the distribution of the sample mean?
Find the probability the mean of the sample and the only adjustment might be using the p-value from a computer program (like SAS), rather than writing a rejection region.
Calculate chi-square for this table. Show your work. Draw a table just like the one above, leaving room in each cell to record these numbers: observed frequency fo), expected frequency fe), Fo -fe(f0-fe)2 and (f0-fe)2/fe
1. in this exercise we will be building regression models for predicting house prices. we will be using data collected
a chemical company wished to study the consistency of the strength of one of its liquid chemical products. the product
the hypothesis that there is a relationship between perceptions of police performance and area of the city for Montgomery. What might you tell the police chief?
What is the expected total inventory holding and ordering cost per year and how many days should one order last on average?
List and explain the variables you would collect in this study. There must be a minimum of three variables and two must meet the assumptions for a correlational analysis.
Outline two techniques which can be used to decide where to put SPC effort most effectively and state 3 ways in which the application of SPC can improve quality standards.
what is the point estimate for the mean hospital cost for victims who wore seat belts and construct and interpret 99percent conf interval estimate for the mean hospital costs for accident victims who wore seatbelts.
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