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A vending machine dispenses coffee into an 8 ounce cup. The amount dispensed is normally distributed with a standard deviation of 0.05 ounces. You can allow the cup to overfill 4% of the time. What amount should you set as the mean amount of coffee to be dispensed?
Which of the following would be the hypothesis for testing the claim that the proportion of students at a large university who smoke is significantly different from 0.15?
A financial analyst is interested in estimating the average amount of a foreign loan by U.S. banks. Construct the Stratum weights for proportional allocation
The number of days (X) after mailout it takes a utility company to receive payment for a customer's bill is a normal random variable with a mean of 31 days.
a researcher obtains an f-ratio with df 2 36 from an independent-measures research study. what is the total number of
A sample of students from our statistics classes reported their GPAs, indicated their genders, and stated whether they were in the university's Greek system.
Explain how the postsampling confidence level is derived from a presampling probability.
find the z value based on standard normal distribution for each of the following 88 confidence interval for a
Verify that if the raw data for each individual in a sample is 1 when the individual has a certain trait and 0 otherwise, then the sample mean is equivalent.
Two drugs were administered to two groups of randomly assigned 60 and 40 patients, respectively, to cure the same disease.
1.simulate 100 random normal variables with mean 1.5 and standard deviation 2. create a histogram which shows the data
Should the professor spend the money for this software? Support your recommendation with an appropriate test.- Explain carefully what your P-value means in this context.
sketch and determine the area under the standard normal curve that liesi.to the left of -3.20ii. to the right of
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