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Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny 200 times and got 83 heads. How significant is this evidence against equal probabilities?
Use the following four step process:
STATE: What is the practical question that requires estimating a parameter?
PLAN: Identify the parameter, choose a level of confidence, and select the type of confidence interval that fits your situation.
SOLVE: Carry out the work in 2 phases:
1. Check the conditions for the interval you plan to use.
2. Calculate the confidence interval.
a) 95% of confidence intervals generated will include the sample mean X. b) 5% of the confidence intervals generated will include the true mean μ
For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha set at .05 with one tail. The data are as follows:
Do you think that all random samples taken from the same population will lead to the same result?
Which statistical analysis technique should be used? What is the null hypothesis? Can an analysis be performed? Why or why not?
Suppose you are traveling on business to a foreign country for the first time. You do not have a bus schedule or a watch with you. However, you have been told that buses stop in front of your hotel every 20 minutes throughout the day. If you show ..
Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minute..
If a garage is robbed, what is the probability the doors were left open?
What is the equation for this regression model?
What is the underlying variable that indirectly correlates these 2 variables? What other variables could you identify as having an indirect relationship?
Is it true that one of the major assumptions underlying ANOVA is that all the populations being studied in the experiment have the SAME distribution?
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
Find the linear regression model for the South Central states. How does the equation for the South Central states compare to the one you found for the North Central states?
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