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Suppose you own a share of a company's stock. Over the past several days its selling prices has been right around $14.89. For the history of the company, the average stock price has been $10.43 with a standard deviation of $5.60. Is this unusually high? Should you sell, given this information, or is it likely that the price could go up more? Show your work and explain your answer.
Does the sample provide sufficient evidence that the mean pH level in the water differs from 8.5? Conduct a test at the ? = .01 level. What are the upper and lower limits of the 95% confidence intervals?
In this paper present the Construction of confidence Intervals and the Proper Interpretation of confidence Intervals and show appropriate examples in the education environment.
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
Finding the probability of each event in a group of events of different possibility
Draw a single Venn diagram representing their possible decisions. Explain any assumptions you have made regarding mutual exclusivity of events.
What is the probability that the poll gets a sample in which fewer than 53.4% say the level of immigration to this country should be decreased?
one state lottery has 1200 prizes of 1 115 prizes of 10 15 prizes of 70 5 prizes of 305 2 prizes of 1280 and 1 prize of
A research team conducted a study of soft- drink preferences among residents in a test market prior to an advertising campaign for a new cola product. Of the participants, 130 are teenagers and 130 are adults. The researchers secured the following re..
A highly simplified game of "Monopoly" is played on a board with four squares as shown in Figure 11.8. You start at GO. You roll a die and move clockwise around the board a number of squares equal to the number that turns up on the die.
A chi-square test for goodness of fit is used to test whether or not there are any preferences among 3 brands of cola.
A computer chess game and a human chess champion are evenly matched. They play ten games. Find probabilities for the following events.
The fat percentages found were as follows: 24, 40, 29, 32, 33, 25, 15, 22, 18, 25, 16, 27. On the basis of these data, can we conclude that middle-age men employed by the corporation have become fatter? Assume a directional H1 is legitimate and us..
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