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Two drugs were administered to two groups of randomly assigned patients to cure the same[10]disease. One group of 60 patients and another group of 40 patients were selected. The following table gives information about the number of patients who were cured and not curedby each of the two drugs.
Cured Not Cured
Drug I 44 16
Drug II 18 22
Test at the 1% significance level whether or not the two drugs are similar in curing and not curing the patients.
suppose that you want to estimate the mean ph of rainfalls in an area that suffers from heavy pollution due to the
according to a survey of the top employers in a major city in the midwest a worker spends a average 413 minutes a day
What is the probability that fewer than three calls will be received in the first 6 s? - What is the probability that fewer than three calls will be received in the first 6 min?
Find p. Because the number of students varies from month to month, also find n, the average per month.- Make a p chart using control limits based on n students each month. Comment on control.
The four characters required for the passcode, the first must be a number,the 2nd and 3rd must be a number. how many different passcodes can you form?
Can the company conclude that the pill is effective at promoting weight loss? Write the hypotheses and conduct the appropriate hypothesis test.
Using the binomial distribution formula, calculate the probability of getting exactly 2 "sixes" when you roll a die 7 times. Show your work.
in a study entitled how undergraduate students use credit cards it was reported that undergraduate students have a mean
Bill calculates a linear correlation coefficient between two variable as 1.20. How would you interpret this?
A sealed pressure vessel of constant volume (V = 1 m3) is filled entirely with fluid at atmospheric pressure (Pi= 101 kPa)
1) Ace Car Rental has three main models that are used in it midsize range of cars. The cars are very similar and perform at about the same level. Since the customer has to pay for the gas use during the rental period, the manager is often asked about..
the line tangent to the graph of
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