863 Answered Questions for the topic Statistics Question
mean question of statistics.
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A distribution of values is normal with a mean of 225.5 and a standard deviation of 3.2.
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 142.7-cm and a standard deviation of 2.2-cm.
please help me its a statistic question
It has been reported that 25% of all cars on the highway are traveling at speeds in excess of 70 mph. If the speeds of eight random automobiles are measured v
A psychology professor of a large class became curious as to whether the students who turned in tests first scored differently from the overall mean on the test
Standard deviation of lifespan
confidence level of a statistical test?
Normal distribution table
If you had a large collection of data, how might you go about determining whether the distribution was normal?
Your report should have a conclusion section written in “non-statistical” style that clearly summarizes the major conclusions from the final analysis and discus
For a normally distributed set of data, the percentage of data less than a z-score of 0.83 is
For a normally distributed set of data, find the area under the normal curve for the region between z-scores of 0.74 and 1.62
In a normally distributed set of data, the mean is 30 and the standard deviation is 5. Find the piece of data that has a z-score of -1.24
Express the original claim in symbolic form. Identify the null and alternative hypotheses
Mean of 600 hours, standard deviation of 70 hours. What percent will be from 600-740 hours, what percent under 600 hours, and what percent 390-670 hours.
The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2
In a regression anaylsis, if r2 = 1, which of the following are implied? a ) SSE = SST b) SSE = 1 c) SSR = SSE d) SSR = SST
Type I and II error with small sample size?
A fair die is rolled 12 times. Consider the following three possible outcomes: