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Assume a binomial probability distribution has p=0.6 and n=200 a)What is the mean and standard deviation?b)Is this a situation in which binomial probabilities can be approximated by the normal probability distribution ?Explain.c)what is the probability of between 100 and 110 successes? d) What is the probability of 130 or more successes?
Suppose that patrons of a restaurant were asked whether they preferred beer or whether they preferred wine. 70% said that they preferred beer. 60% of the patrons were male. 80% of the males preferred beer.
What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?
What concepts and constructs would you use to study this phenomenon? How might the concepts or constructs relate to explanatory hypotheses? Explain.
10 independent measurements were made of the pH level for both solutions, with the following data testing. Do the data disprove the scientist's claim? Use the 5% level of significance. What is the p-value?
Students that studied for more than one hour received a c+ or above on the final. Use a .05 significance level to test the professor's claim.
Initially the wheel rotates with an angular speed W, causing the block to rise with a linear speed v = 0.33 m/s. Find the moment of inertia of the wheel if the block rises to a height of = 7.9 before momentarily coming to rest.
In the following observational studies, describe changes that could be made to the data collection process that would result in an experiment rather than an observation study. Also, offer suggestions about unseen biases or lurking variables that m..
If the oven gets hotter than 475 degrees F, the core is defective. What is the probability that the oven will cause a core to be defective?
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
No information is available about its value. How large a sample size is needed to estimate it to within 0.15 with 99% confidence?
Over the same period the average /maximum temperature in Dublin was 6.2 degrees Centigrade. The standard deviation was 2.9. How to compute the variance of temperature in Boston.
What characteristic (or property of random samples) could be observed during the sampling process?
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