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Margin of error
A TV newscaster reports the results of a poll of voters, and then says, The margin of error is plus or minus 4%. Explain carefully what that means.
Make sure you include a complete ANOVA summary table. Also, report the appropriate null and research hypotheses and the critical value (alpha = 0.05).
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
an instructor is interested in checking whether attending labs improves students performance on their finals. the
Standard deviation equal to 500 and 50 hours, respectively. Find the probability that a random sample of 15 bulbs will have an average life of less than 475 hours.
Find P-Value with 0.05 significance level, and state the conclusion about the null hypotheses (reject or fail to reject) With H1: p is not equal to 3/4, the test statistic is z=0.35
Statistics 285: How to Create a Data Set and Formulate Research Questions. What is the topic of your data? Is it numeric - i.e. quantitative or narrative (ethnographic) - qualitative
Use the Histogram option from Data Analysis to examine whether the daily percentage scrap from the machine is normally distributed. Comment on the findings.
a. What is the probability that a randomly selected juror has an IQ score below 120?
What evidence from the fiveother documents would support or oppose the views of Rauschenbusch or Pius?What do all of the documents tell you about the issues and problems that were affecting people's behavior around 1900?
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothepaste. A random of 60 people used the new toothpaste for 6 months.
Use the Emperical Rule to find what two values 68% of the data will fall between for a data set with a mean of 219 and standard deviation of 20.
when using the weighted moving average forcasting method the sum of all the weights used must add to what
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