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The component has the exponential time-to-failure distribution with the mean of 10,000 hours. Component has already been in operation for its mean life. Determine the probability that it will fail by 15,000 hours?
Find or create a data set that would allow you to explain what is meant by mean, median and mode. Make sure to also show any calculations or formula necessary. Describe or provide as much information on the data set as possible.
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
Let μ be the mean perceived age estimate for all viewers of the ad, and suppose we consider the industry requirement to be met if μ is at least 25. Set up the null and alternative hypotheses needed to attempt to show that the industry requirement ..
Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
Find out the variance for percentage of tickets? Determine the probability that your sample will have the average between 70 and 75?
A researcher studies the effect of cognitive psychotherapy on positive self-regard. The number of positive statements made about oneself is recorded for each participant during the first meeting.
The data follow. Males Females 27 25 25 29 19 18 10 23 16 20 22 15 14 19 (a) What statistical test should be used to analyze these data?
The following table gives the number of U.S. families, in thousands, with pet dogs, pet cats, and pet birds, by size of family.
A standard deviation of 8 minutes before they could see doctor. Give the 99% confidence interval for average waiting time for all of patients who visit doctor.
To sketch the 3-sigma X-bar chart and R-chart parameters. A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars.
Given the data set body-weight.sav, use SPSS to calculate the 90%, 95% and 99% confidence intervals for the mean of the variable weight.
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