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Q1) Researcher forecasts that listening to music while solving math problems will make particular brain area more active. To test this, research participant has her brain scanned during listening to music and solving math problems and brain area of interest has percent signal change of 58. From many earlier studies with this same math-problems procedure (but not listening to music), it is known that signal change in this brain area is normally distributed with mean of 35 and standard deviation of 10. By using .01 level, what must researcher conclude? Solve this problem explicitly by using all five steps of hypothesis testing and demonstrate your answer with sketch showing comparison distribution. Then describe your answer to someone who has never taken a statistic course (but who is familiar with mean, standard of deviation and Z scores).
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
What is the probability that at least one of the new books is a commercial success?
Are number of toilet breaks and amount of beverage consumed related? Describe how? Provide the value of statistic and probability value.
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
Gas consumption of 3 cars (labeled car A, car B, and car C) using 4 different kinds of gasoline. Is there difference among kinds of gasoline?
What percent of the Fords traveled 62.000 miles or less during the year?
Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0?
Assume the arrival of these emails i3 approximated by the Poisson distribution.
Perform a proper analysis. Describe your null and alternative hypothesis, report the p-value. What is your conclusion?
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
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