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Q1) Pilot survey of ages of country residents is taken and originally shows and average age of 33.5 years with standard deviation of= 5.2 years. Researcher now wishes to do a full survey and to create the estimate of average age of population of country residents with 95% confidence and with precision of evaluate of plus and minus 1.5 years. How large sample will be needed?
Q2) In the political survey , where opponents are probable to be relatively close in terms of percent of vote that they will receive, how large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
Probability histogran curve of percentage of (P)z
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention.
Calculate descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Calculate the value of beta for each stock.
P-value to test hypotheses,
Find the probability that a randomly selected employee earns less than $5.43.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
The number of standard errors that the sample estimate (p 1 - p 2 ) of (p1 - p2) falls from its null hypothesis value of zero is called
Analysis of data sets assignment
Is there evidence of difference in median performance between two methods? (Use α = 0.05.)
Describe the sampling distribution of the sample proportion
The results of the simple linear regression are provided below.
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