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Suppose the monthly income of assistant managers of our local banks are normally distributed with mean of Php40,000 and a standard deviation of 5,000. What is the probability that if an assistant manager is chosen at random then his income is between 35,000 and 40,000?
Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.
Computing the mean value for the given data - What is the new mean for the class and frequency distribution graph, what type of graph should be used
Suppose a simple random sample of size n = 34 is obtained from a population with μ = 30 and σ = 4. Is the sampling distribution of x approximately normal.
After six months each pilot's cholesterol level is checked again. At the 0.01 significance level, can we conclude that the program was effective in reducing cholesterol levels?
On a December day, the probability of snow is .30. The probability of a "cold" day is .50. The probability of snow and "cold" weather is .15. Are snow and "cold" weather independent events?
What is the probability that a home has a garage but not a swimming pool?
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.
Below are fertility rates (average children born per woman) in 15 EU nations for 2 years. (a) Make a scatter plot. (b) Find the correlation coefficient and interpret it.
The lifetime of a super tough AAA battery is normally distributed wit mean of 28.5 hours and standard deviation of 5.3 hours. For a battery selected at random
A new-car dealer is leasing various brand-new models for the monthly rates(in dollars) listed below. Estimate the true population variance and standard deviation in leasing rate with 90% confidence.
can we conclude that the mean assembly time for this component exceeds 3 minutes? What error could be made in this case? Describe it in words.
How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why are raw scores transformed to standardized scores, such as z-scores, in order to interpret those raw scores?
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