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Based upon statistical studies it has been found that 3.32% of all births in the United States will result in twins being born. If 17,300 births are selected at random what is the probability that:
a) at most 600 of them will result in twins being born?
b) between 525 and 550 of them (inclusive) will result in twins being born?
For each marksman, the total score was recorded for shots fired during a heartbeat and for shots fired between heartbeats. Do the data belowindicate a significant difference? Test at the α = 0.05 level. Include a formal decision statement regardin..
What is his expected cash balance at the end of the following May and what is the probability that his balance will be negative in one or more month?
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
The average monthly cost per household for groceries in kentucky is $625/mo with a standard deviation of $125/mo. The average age of the memebers in each of the households in Kentucky is 22.5 yr with a standard deviation of 5.175 yr. Which data se..
Differentiate between the levels of measurement by providing an example of data which can be transformed from one level of measurement to another and another example of data that cannot be transformed.
About one-third of the students entering a certain university drop out during or at the end of their first year." Does this statement illustrate percentage, proportion or probability?
a student wanted to construct a 95 confidence interval for the average age of students in her statistics class. she
in a university statistics course a correlation of -0.8 was found between numbers of classes missed and course grade.
in random sampling each item or element of the population has an equal chance of being chosen at each draw. a sample is
Calculating the effectiveness of an educational intervention using a pretest-posttest design. I plan to run an ANCOVA on the scores with the pretest as the covariate. The six subcatagories on the test give the raw score of correct answers out of the ..
Calculate the test statistic. Determine the p-value of the test-statistic.
Description of data collection and analysis methods (how do you choose people for survey? Sampling plan or any others) Survey on according to the Australian market
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