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The weight at birth of males has a mean value of 3.53 kg with a standard deviation of 0.58. What birth weight has a z-score of 0.81? Round to the nearest hundredth as needed.
Explain what the mean, m, tells us about a normal curve. If the random variable x is normally distributed, what percentage of all possible observed values of x will be.
The mean sales per customer µ for all of the sales for your company last month is not known. Based on your past experience, you are willing to assume that the population standard deviation of sales, σ, is about $220. If you take a random sample of 10..
Suppose one samples from a normal distribution with mean and standard deviation a. Describe how you would use a Monte Carlo procedure to find the probability of coverage of your new confidence procedure.
1. a population of scores with u=43 and Q=8 is standardized to create a new population with u=50 and Q=10. what is the new value for each of the following scores from the original population? scores: 43,47,55,35
One way to find probabilities from a Standard Normal Distribution is to use probability tables, which are located inside the front cover of your textbook. According to the table, what is the probability when z ≤ -1.75? The probability when z ≤ 1...
Given the sample mean and the sample standard deviation.Use this information to construct the 90% and 95% confidence intervals for the population mean. Which intervals is wider?
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action
What differentiates the two formulas Σ (x - xbar)^2/n-1 from Σ (x - µ)^2/n, and why the difference?
In a survey of 616 males ages 18-64, 393 say they have gone to the dentist in the past year. Construct90% and95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenie..
What is the General Linear Model (GLM)? Why does it matter and compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?
The average time scheduled for a doctor's visit is 25 minutes with a standard deviation of 22 minutes. A researcher uses a sampling distribution made up of samples of size 271. According to the Central Limit Theore, what is the mean of sampling dis..
Define a correlation coefficient
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