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In a certain city the daily consumption of water (in millions of liters) is a random variable whose probability density is given by
What are the probabilities that on a given day
(a) the water consumption in this city is no more than 6 million liters;
(b) the water supply is inadequate if the daily capacity of this city is 9 million liters?
A bonding company want to insure a construction projects completion. If the project is cancelled due to the contractor's lack of performance
Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%. For each of the following values, determine if you would reject or fail to reject the null hypothesis:
prizes and the chances of winning in a sweepstakes are given in the table below.prizechances250000001 chance in
A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 95% confident that the sample mean is correct to within plus-or-minus $50 of the population mean.
a standard 52-card deck is shuffled and 2 cards are picked without replacement from the top of the deck. the
a new phone answering system for a company is capable of handeling seven calls every 10 minutes. prior to installing
compute the standard error of the estimate of the data below.x values 41 55 61 68 82y values
I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
There are twelve months. Given the cohort of 100 which starts the program, about how many are left after twelve months?
A regression was built to predict the dollar value of a customer transaction. A three-level categorical variable distinguishes cash and credit purchases made in person from online purchases.
A description of a Pew Research Center poll referred to "the random generation of the last two digits of telephone numbers." Each digits has the same chance of being randomly generated. Construct a table representing the probability distribution f..
What % of officers make more than 20 arrests per month? What % of officers make between 10 and 18 arrests per month? What number of arrests is the benchmark for officers who are in the top 10% of monthly arrests?
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