Mathematics, 29.05.2021 14:00 s77969
2) The Sirius-Y54 uses a nuclear reactor as its energy source. If No is the initial mass
of the fuel rods before take-off and N is the mass of the fuel rods remaining and if:
IN = Noekt
SING
MURGAS
a) Use the graph above to find the half-life of the Nuclides
Half-life:
years
b) Find k by using your answer in question 2a).
c) How long will it take for the fuel rods to deplete to 0.001kg
Answers: 2
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(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?
Answers: 2
2) The Sirius-Y54 uses a nuclear reactor as its energy source. If No is the initial mass
of the fue...
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