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It is estimated that 68% of the voters in the city are against a new sales tax. If 20 voters are selected at random and asked their opinion, what is the probability that at least 15 of them are apposed to a new sales tax?
suppose a bar buys 10 of these sony tvs what is the probability that the average life time of the bar's tv is less than 19,650 hours.
1.an experiment was conducted to determine the effects of three different pesticides p1p2p3 on the yield of three
Ace Machine Works estimates that the probability its lathe tool is properly adjusted is 0.8. When the lathe is properly adjusted, there is a 0.9 probability that the parts produced pass inspection.
What are the four levels of measurement scales? Give examples of each and explain in detail. Explain the use of normal probability plot to evaluate whether a set of data is normally distributed? Please discuss in detail.
Find the z score corresponding to a score of X = 60 for each of the following distributions:
the number of items sold by freds candy store for 2004 and 2007 and the store prices for the two periods
How many selections result in all 6 workers coming from the day shift? What is the probability that all 6 selected workers from the day shift?
State the hypotheses. (b) State the decision rule and sketch it. (c) Find the test statistic. (d) Make a decision. (e) Estimate the p-value and interpret it. HeartRate.
A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
What is the point estimate of the difference between the population means? What is the 95% confidence interval estimate of the difference between the population means?
Mean and standard deviation for new sample were then computed to be M _ 6 and s _ 3. Write down the values of mean and standard deviation for original sample?
Describe what is measured by the estimated standard error in the bottom of the independent-measures t statistics.
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