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How can I conduct statistic experimental design for three independent variable (time, amount, temperature) are useful to predict Y? Please include any approach steps and How can I interpreted? i don't have real number, I just want to design at first (null hypothesis, t-test, f-test etc).
We can compare two sample means to determine if the samples were obtained from normal populations with the same mean using the "t" distribution.
What is the standard error of estimate? Describe with an example. What are the coefficients of the linear regression model and what do they mean? What are the various statistics reported in a regression output?
Compute test statistic and p -value for each sample. (Negative amount must be pointed out by minus sign.)
The Speedy Oil Change Company advertised a 15-minute wait for an oil change. A sample of 23 oil changes showed a mean time of 16.5 minutes and a standard deviation of 4.3 minutes.
Using the following data, test the question that an equal number of Democrats, Republicans, and Independents voted during the most recent election.
A random sample of eight adults aged 30 years were asked how much they spent on medical costs in the year 2011. The following data were measured. Compute the sample standard deviation.
SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points and are approximately normally distributed. A person who scores (a perfect) 800 on the SAT I has approximately what percentile rank..
What percent of sales representatives earn more than $42,000 per year?
Determine the mode for this distribution. Describe why you can't calculate the mean number of times using data in the table.
Find out the probability of an event relies on past history of record data. The relative frequency method of computing the probability of an event relies on past history.
Draw a tree diagram depicting the sample space outcomes for this experiment.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
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