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In a study to estimate the proportion of residents in a city that support the construction of a new bypass road in the vicinity, a random sample of 1600 residents were polled. Let X denote the number in the sample who supported the proposal. To estimate the true proportion in support of the plan, we can compute p^=X+1600?/21600. The estimator p^ has bias
A. 1/(2×40).
B. 40/2.
C. 1/40.
D. 1/1600.
E. 0, so unbiased.
Currently, quarters have weights that are normally distributed with a mean of 5.670 g and a standard deviation of 0.062 g. A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g.
suppose the joint pdf of lifetimes of a certain part and a spare is given byfx y e?xy 0 lt x lt ? 0 lt y lt ?and zero
According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..
Testing equality of two means - difference in performance of the two gasolines and difference in gasoline mileage output
deliverable length 4-8 paragraphs inforum topic with all of the recent frauds and corporate scandals similar to merck
Under the assumption that co payment amounts are normally distributed, find a 99% confidence interval for the mean amount in dollars.
Upon reviewing the accounting records from the restaurant, you discover that it grosses roughly $3000 per day on 6 out of 10 days. Determine the estimated probability that the restaurant will gross over $3000:
Set up the null and alternative hypotheses for testing these claims. In order to conduct the test, the customer selected a significance level of alpha=.05. Interpret this value. (I.e. what does it mean to conduct the test at a level of alpha=.05)
Which of the following statements regarding the coefficient of correlation is true. A value of 0.00 indicates two variables are not related.
in a library of 3000 songs 50 are from a particular group. the library is shufled and played until the kth song from
In 2007, the IRS audited 1.77% of individual tax returns with income greater than $100,000. What is the probability that two randomly selected returns with income greater than $100,000 will be audited?
What is the population from which your sample has been taken? Description of data taken from other sources. Preliminary analysis using histograms, box plots, scatter plots, etc. and investigation of outliers. Do you keep or discard identified outl..
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