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In "Boston Record Game Fishes", it is stated that in the Cozumel region, approximately 40% of strikes (while trolling) result in a catch. Suppose that on a given day a fleet of fishing boats got a total of 35 strikes. What is the probability that the number of fish caught was:
(A) 10 or more?
(B) 20 or fewer?
(C) between 10 and 20?
(HINT: can this binomial distribution be approximated by a normal distribution)
weights were measured for 5 female and 5 male beetle pupae. test the hypothesis of no difference in mean weight of
questiona. the following probability distributions relate to the completion times in weeks ta and tb of two independent
Assuming that the manager's claim is correct, calculate the probability that 117 or fewer of 205 randomly selected marketing researchers would disapprove of the scenario.
Make up the ages of a group of participants who are freshman, sophomores, juniors, and seniors. You will need the age of 10 participants across each level.
A soft drink company has recently received customer complaints about its one-liter-sized soft drink products. Customers have been claiming that the one-liter-sized products contain less than one liter of soft drink.
Plot the data on the same line and give your impression regarding any apparent differences between the two companies.
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
suppose as part of a national study of economic competitiveness a marketing research firm randomly sampled 200 adults
do interruptions while you are working reduce your productivity? according to a university of california-irvine study
Using the .02 level of significance, conduct a five-step hypothesis testing procedure to determine if the new processes significantly reduced the wait time.
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What is the value of your pooled proportion?
Write the null and alternative hypotheses. You want to see if the number of minutes cell phone users use each month has changed from its mean of 120 minutes 2 years ago.
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