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Suppose a coin toss turns up 12 heads out of 20 trials. At .05 significance level, can one reject the null hypothesis that the coin toss is fair?
Create an accurate scatter plot of the data. This can be done by hand or using a program like Excel. Use Height as the x variable and Arm Span as the y variable. Does this graph show a linear relationship between x and y?
Would you recommend test- ing H0 : m = 5 versus Ha : m> 5 or H0 : m= 5 versus Ha : m
Using the 2.5% significance level, can you conclude that the average credit limit for all new credit cards issued in 2008 is higher than the corresponding.
In calculating the UCR rape rates in New York City, which of the following would appear to be the best data for the denominator?
a bank estimated the average amount of money withdrawn from its atm machines over weekends exceeds 150 per customer
Standard deviation 0.3 ton. What is the probability that a fully loaded truck of this model is (a) less than 6 tons, (b) more than 7 tons, (c) between 6 and 7 tons?
You flip four 2-sided coins and roll one 6-sided die. How many unique outcomes are there for this five-part experiment? Compute an exact answer?
This information was also obtained from monitored calls. At the .05 significance level does it take longer to resolve software issues? What is the p-value?
Management of a company is considering adopting a bonus system to increases production. One suggestion is to pay a bonus on the highest 5 percent of production based on past experience.
A mainframe computer in a university crashes on the average 0.71 time in a semester. What is the probability that it will crash at least two times in a given.
Develop a joint probability table for these data. If a student goes full time, determine the probability that school quality is first reason for selecting a school?
About 75% of the students in a class score between 80 and 100 on a quiz. The other 25% of the students have scores spread out between 35 and 79. Characterize the shape of the distribution of quiz scores. Explain.
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