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A film developer claims that the mean number of pictures developed for a camera with 24 exposer is less than 22. If the hypothesis test is preformed, how should you interpret a decision a)reject the null hypothesis and b) fail to reject the null hypothesis.
The project requires you forecast the historical data, replicating the appropriate trends, seasonalities, week-over-week variability, etc. Please refer to the chapter and materials on Forecasting for the procedures to do.
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
The following data represent scores of 50 students in the applied business statistics test. Prepare the frequency distribution table and the frequency histogram for this data set.
State one referenced hypothesis including the three variables (FA as an IV, age as the covariate and RS as the DV)
Answer the following three questions based on what you know about statistics now.
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
Make a relative frequency histogram by using ten-point intervals to show the distribution of the scores.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
A random sample of 400 college students was selected and 120 of them had at least one motor vehicle accident in the previous two years.
At the .01 significance level, can we conclude that there is more variation in the selling prices of the oceanfront homes?
The Absent Minded Professor study was a RCT, which had an objective to estimate the protective effect of drug "No-Reminder" compared to drug "Reminder" on risk of "Forgetful syndrome". The study found that the drug "No-Reminder" was protective.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
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