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1. Differentiate between sampling error and nonsampling error.
2. Provide a real or hypothetical example of a situation in which the sampling process is destructive.
3. Differentiate between the terms parameter and statistic. Which one will be the result of taking a sample?
what is the standard error of a sampling distribution when ? sigma 24 and n 144?a 20 b .167 c 2.0 d unable to
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
Researcher wants to estimate in $300 true average amount of money country spends on road repairs each year. If she wishes to be 90% confident, how large sample is essential?
1. explain why stepwise regression is necessary when there are many predictor variables.2. explain the main difference
Find values for the interval x‾ ± 2s, and explain why the result is evidence that the distribution of weekly hours spent using the computer is not bell-shaped.
a new design for the braking system on a certain type of car has been proposed. for the current system the true average
electronics manufacturer se must decide whether or not to invest in the development of a new type of battery. if the
You are looking at a bond to add in your portfolio. The bond has a 7.2 percent coupon (paid semiannually), 10 years left to maturity, and can be purchased at par ($1,000).
The following is a case-control study: Obtaining histories and other information from a group of known cases and from a comparison group to determine the relative frequency of a characteristic or exposure under study.
1) What is the force of attraction between Mars and the satellite? 2) What speed should the satellite have to be in a perfectly circular orbit? 3) How much time does it take the satellite to complete one revolution?
question thompson photo works purchased several new highly sophisticated machines. the production department needed
A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47.
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