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A coin was flipped twenty times and landed heads fifteen times. Based upon this information, answer the following the question:
If the coin is balanced (fair) what is the probability of a head on the toss?
If the coin is not balanced (not fair), what is the probability of a head on the next toss?
If a fair coin is flipped three times what is the probability of getting the following outcomes?
- Zero Heads
- One or more heads
= One head followed by two tails
Use α =.01 and test for a significant difference. What is your conclusion?
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
The manager of a department store wants to determine what proportion of people who enter the store use the store's credit cards for their purchases.
Suppose that beer consumption and religious affiliation are not independent of each other. That means that
The data represents the closing value of the Dow Jones Industrial Average (DJIA) over the 29-year period from 1979 to 2007.
Use regression analysis to develop an estimated regression equation that could be used to predict the value score given the price of the car.
What are the expected value and variance of the following probability distribution?
Does the normal distribution yield a good approximation of the actual results?
Draw a ball from number 1: if red go to number 2; if black go to number 3. What is probability
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
Probability that the entire batch will be rejected?
Given that x is a normal variable with mean u = 47 and standard deviation = 6.2, find:
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