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Is the mean temperature of the managers is less than 98.6°F at the 0.01 significance level?
It is commonly accepted that the mean temperature of humans is 98.6°F. The CEO of the company has nothing better to do but measured the temperatures of 26 department managers 1 to 4 times daily to get a total of 123 measurements. The collected data yielded a sample mean of 98.4°F and a sample standard deviation of 0.7°F. Is the mean temperature of the managers is less than 98.6°F at the 0.01 significance level? Justify your answer with the proper statistics.
Determine percent of the garages take between 29 hours and 34 hours to erect? Determine percent of garages take 28.7 hours or less to erect?
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
What is your conclusion regarding null hypothesis?
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
What is an appropriate sample space for this experiment?
where the deviations εi are assumed to be independent and Normally distributed with mean 0 and standard deviation σ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.
Use this information to construct a probability table, and then calculate each of the following probabilities:
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
Estimating the value of the population mean on the basis of the sample mean alone produces a(n):
Internal study by Technology Services department at Lahey Electronics disclosed company employees get the average of 2 emails per hour. Suppose arrival of these emails is approximated by Poisson distribution.
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.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
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