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Question: This activity used 90% confidence intervals because it is easy computationally to find the bottom 5% and the top 5% of a distribution. Usually, 95% confidence intervals are reported. Will 95% confidence intervals be longer or shorter than 90% confidence intervals? Explain.
scores on an endurance test for cardiac patients are normally distributed with the mean185 and standard deviation10.a.
Results show access to health care was increased at p
Using the original data, estimate the population standard deviation with 90% probability.
1.on a certain airline the chance the early flight from atlanta to chicago is full is 0.8. the chance the late flight
1. if the population is normally distributed then the sample mean is also normally distributed even for small sample
Compare the pros and cons of each capital budgeting technique, (NPV, Payback, IRR and profitability index) in evaluating capital projects for a company?
A battery manufacturer looks at samples of 30 batteries at the end of every day of production and notes the number of defective batteries.
A point estimate for a parameter is a single number designed to estimate a quantitative parameter of a population, usually the value of the corresponding sample statistic
researchers can run t-tests on which type of variables?a a group variable and continuous variableb two criterian
The standard deviate of fresh fruit consumption is about 30 pounds. Suppose a researcher took a random sample of 38 people and had them keep a record of the fresh fruit they ate for one year.
The results were analyzed using a mixed design and blocking, and the reported results were as follows.- Interpret these findings.
find the following probabilities for the standard normal random variable zgive answers to four decimal places.a pz ?
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