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You and a childhood friend invent a new type of cell phone battery and your team believes the battery can last longer than 30 hours. You want to test this claim before you start marketing the battery so you decide to produce n=100 batteries and evaluate the mean battery life (p). Accordingly your null hypothesis is H0 :p <30 and the alternative hypothesis is H1:p>30. However your friend wants to save money on this trial an use a small number of batteries for the test (n<100) but your production manager believes you should use a larger number of batteries (n>100). What are the pros and cons of these two positions?
Forecast 2 out of sample forecasts for the final model using following data: Final Estimates of Parameters AR 1 0.9647 0.0388 24.84 0.000.
Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
One bus has a routa that takes 25 minutes. The other bus has a routa that takes 55 minutes. Both buses leave the bus- stop leaves at 6 a.m and run continuously. What is the next time that the buses will stop together
Construct a table the average number of patients - A variable that reflects the inter-arrival times of patients.
suppose you are going to flip a coin. what is the set of possible outcomes for this suppose you flip the coin twice. what is the set of possible outcomes for this if you flip the coin twice what are the chances that you will get one head and one t..
Suppose that you are a student worker in the Statistics Department and they agree to pay you using the Random Pay system. Each week the Chair flips a coin. If it comes up heads, your pay for the week is $80, and if it comes up tails, your pay for the..
a committee is to consist of 50 randomly chosen united states senators. find the expected number of different states to
What is the effect of child care on the security of attachment which develops between infant and caregiver. You suspect that infants in child care will be insecurely attached at 11 months after being in a child care from 2 months of age,
Suppose 80% of kids who visit a doctor have a fever, and 20% of kids with a fever have a sore throats. What's the probability that a kid who goes to the doctor has a fever and a sore throat?
Critically discuss the concept of the normal distribution, why it is important, and what you think it means. When students talk about "grading on the curve," how does that apply to the normal distribution?
many customers complain because the declared lifetime of the light bulb you produce is 1000 hours while they seem to
an airport limousine can accommodate up to four passengers on any one trip. the company will accept a maximum of six
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