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A program submitted for an assignment has a probability of 0.2 of going into an in nite loop. If it does not go into an in nite loop then its execution time is an exponential random variable X with mean 1= 1/pi. Suppose that the program has been executing for t seconds. What is the probability that the program is in an in nite loop? (Find an expression in terms of pi and t .)
information regarding the price of a roll of camera film 35 mm 24 exposure for anbspsamplenbspof 12 cities worldwide is
Is the dependent variable discrete or continuous? interval, or ratio) is used to measure the dependent variable?
Suppose a random sample of size 64 is drawn from a population with a mean of 277. If 90% of the time the sample mean is less than 280, what is the population standard deviation?
The average weight is 215 pounds and the standard deviation is 15 pounds. Approximately how many players had weights between 215 and 225 pounds?
Bill calculates a linear correlation coefficient between two variable as 1.20. How would you interpret this?
The past history shows that 60% of employees prefer Starbucks brand coffee. A sample of 5 employees is selected, what is the probability that less than 3 prefer Starbucks?
(a) Consider a normal distribution with mean μ = 88. If 2% of the values lie below x = 50, find the standard deviation σ. (b) Consider a normal distribution with standard deviation σ = 15.6. If 10% of the values lie above x = 17.2, find the mean μ.
Found to have SL concentration of 30ng/ml and sample variance 0.5ng/ml. Does this provide significant evidence that the SL level in maturing male salmon is greater than that of non-maturing male salmon?
a researcher obtains data for witchxbar1nbsp16.63 s1nbsp1.42 n112xbar2nbsp17.93 s2nbsp3.16 n2181 control group2
A cabinet has 3 identical drawers. One drawer contains 2 gold coins, another drawer has a gold coin and a silver coin, and the third drawer has 2 silver coins. (a) What is the chance you get a gold coin?
State the hypotheses. (c) State the decision rule and sketch it. (d) Find the test statistic. (e) Make a decision. (f) Find the p-value and interpret it.
State a hypothesis.
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