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A research manager at Coca-Cola claims that the true proportion, p, of cola drinkers that prefer Coca- Cola over Pepsi is greater than 0.50. In a consumer taste test, 100 randomly selected people were given blind samples of Coca-Cola and Pepsi. 58 of these subjects preferred Coca-Cola. Is there sufficient evidence at the 5% level of significance to validate Coca-Cola's claim? Conduct an appropriate hypothesis test using (i) the p-value method and (ii) the rejection point method.
Find the standard deviation of the time, rounding to the nearest tenth.The standard deviation of the military coups in the other South American country was 1.5.
Is the z value positive or negative? Explain why it should be positive or negative.
Use the data from the group without EFM exposure, calculate the 95% confidence interval for the proportion of cesarean delivery. Calculate the 95% confidence interval for the odds ratio representing the relationship between EFM exposure and cesa..
Texas hold 'em In the popular Texas hold 'em variety of poker, players make their best five-card poker hand by combining the two cards they are dealt.
Problem 1: Consider the natural cubic spline function s(x) interpolation the following data:
Education and Child Development Students at Stetson University plan to ask administrators to build more on-campus housing on the DeLand campus.
Let P(x) be the number of people of height = x inches in the US. What is the meaning of P'(66)? What are its units? Estimate P'(66) (using common sense).
The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was absent on the test day, and his score wasn't included.
A sociologist wishes to study the relationship between happiness and age. He interviews 24 individuals and collects data on age and happiness
a. Distribution of sample slope b1 for regression of foot length on height for small random samples
A gambler believes that a strategy called "doubling up" is an effective way to gamble. The method requires the gambler to double the stake after each loss. Thus, if the initial bet is $1, after losing he will double the bet until he wins. After a ..
question 1 explain the continuity correction factor and provide a good example. 3-4 paragraphsquestion 2 randomly
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