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According with the IRS the taxpayers spent an average of 330 minutes in preparing, copying and to file in an electronic way the fiscal form 4020. An organization that watches over the consumers it selects a chance sample of 40 taxpayers and finds that the time needed to prepare, to copy and to file the form 4020 is 80 minutes. a) Which is the standard error of the median in this example?
b) Which is the probability of that the median of the sample or average medians is greater or more than 320 minutes?
c) Which is the probability of that the median of the sample or average medians be between 320 and 350 minutes?
d) Which is the probability of that the average or median of the sample is greater than 350 minutes?
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee.
The alternative hypothesis is true. In this case the consumer advocacy group will have, A consumer advocacy group doubts this claim and tests the hypotheses
We want to estimate the population mean within 5, with a 99% confidence level. The population std dev is estimated to be 15. How large is the required sample size?
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Find out the probability distribution, and the cumulative probability distribution of car arrivals.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
What is the likelihood that none of the selected flights arrived within fifteen minutes of scheduled time?
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
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