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A manufacturing company produces electrical insulators. If the insulators break when in use, a short circuit is likely to occur. The following date (stored in force) are from 30 insulators subjected to this testing area. At the level of significance, is there evidence that the population mean force is greater than 1500 pounds?
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
Using Chi-square table finding the P-value and interpret the result
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
If the population mean was $1047 in the previous year, does the evidence suggest that expenditure this year has significantly changed?
What terms describe the fit of a regression equation to the data? What is the practical use of the regression equation in the real world? Explain with some examples.
To forcast the sample size within 0.02 with 90 percent confidence. The CEO of the organization needs to forcast the proportion of Canadians who own their house.
A business finds the average cost required to complete a project is $416 with a standard deviation of $57. A sample of 36 project cost reports was selected at random.
What can we conclude from these figures at a level of significance of .01?
Describe what the researcher must do if one of the requirements is not met and give illustrations.
What are the singleton subsets of X and Y? are the empty set and the sample space the singleton subsets?
Findout the probability value for normal distribution. Illustrate the weight of football players is normally distributed with a mean of 200 pounds also a standard deviation of 25 pounds.
Compute the correlation among the variables. Describe perfect correlation also negative correlation. Utilize the following data to answer questions related.
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