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A certain office building infrequently experiences power outages. It is known that the probability of a power outage on any given day is 0.005, and power outages are independent of each other.
a) What is the probability that during any given 400 day period there will be one day with a power outage?
b) What is the probability that power outages will occur on more than three days during the 400 day period?
What is the p-value and compute a 95% CI for the difference in means between the two groups?
To test whether the population mean is less than a specified value.
Create a 99 percent confidence interval for difference in means between Line B and Line C.
If the match ends when one of the teams has scored k more points than the other, find the probability that team 1 wins.
there are c different types of coupon and each time you obtain a coupon it is equally likely to be any of the c types.
a study of various news home pages reports that the mean number of bad links per home page is 0.4. if the errors occur
The stem-and-leaf display below gives the test scores for the students in Prof. Jones' economics class. Use the display to answer the following questions.
The proportion of people aged 18-25 who currently use illicit drugs is equal to 0.20 (or 20%). Now, express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
The following random sample was collected: 22 33 44 6 The 80% confidence interval for the mean is?
A random sample of 8 recent batches produced the following yields. Conduct a hypothesis test to determine whether the true mean yield has decreased.
If the computer manufacturer decides to sample 2,300 of the microchips received in each shipment, what acceptance number, c, would they want?
Assume that flight times from SAN to ATL are exponentially distributed with a mean of 4.5 hours and a standard deviation of 0.2 hours. Assume that you must fly from SAN to ATL weekly for the lucrative consulting engagement for one year (52 flight..
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