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What is the average of sticks of gun he or she chewing daily was 8. To test the claim a researcher selected a random sample of 36 gum chewer and found the mean number of sticks of gum chewed per days was 9. The standard deviation of the population is 1 at a-0.05, is the number of sticks of gum a person chews per day actually greater that 8?
What is the probalility that the mnean annual snowfall during 64 randomly picked years will exceed 107.8 inches? Round your answer to four decimal places.
Let Z be the random variable giving the number of times the second biased coin (coin #2) comes up heads. What is the probability mass function of Z? What is the mean and variance of Z?
In a particular region of Rhode Island, it is known that fisherman's trap on average of 32 pounds of lobster per day with a standard deviation of four pounds.
Suppose a worker needs to process 400 items. The time to process each item is exponentially distributed with a mean of 2 minutes, and the processing times are independent.
The length of time recorded is normally distributed with a mean of 184 seconds and a standard deviation of 55 seconds. What is the probability that and individual will be able to keep eye contact longer than 239 seconds?
Mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. Based on this information, what would be the point estimate for μ?
If the class does well on an exam, then the next exam is equally likely to be any of the three types. If the class does badly, then the next exam is always type 1. What proportion of exams are type 1, 2, and 3?
Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA?
Get an answer from tutors to this homework question now: Under what circumstances is the experimentwise alpha level a concern?
After surveying 90 couples, they determined the mean of their sample to be $150 and the standard deviation was $5. What is the 95% confidence interval for the population mean?
If the number of heads turns out to equal one of your 11 numbers, you win a dollar. which 11 numbers should you pick, and what is your chance of winning? explain.
Quality control engineer has been checking output by almost continuous sampling as abnormal condition began. Determine the probability that in sample of 10 pieces.
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