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Assume that an old used car fails to start 10% of the time. The other 90% of the time it drives for a time period which is uniformly distributed in the interval 20 to 30 minutes. In this interval all subintervals of time of equal width between 20 to 30 minutes are equally likely.
(a) What is the probability that the car drives for at least 10 minutes given that it starts?(b) What is the probability that the car drives for at least 10 minutes?
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
The population mean height of a basketball player is 220 cm with a standard deviation of 20 cm. In a sample of 49 basketball players, what is the probability of getting a sample mean height of 215 cm or more?
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?
lakewood fashions must decide how many lots of assorted ski wear to order for its 3 stores. Information on pricing, sales and inventory costs has led to the following payoff table. what decision should be made using minimax regret.
Location along 500-ft assembly line from which to observe the work habits of the workers on the line. What is the probability that the point she selects is?
Determine whether P constitutes a Bayesian network with the DAG X -> Y -> Z: Determine whether P constitutes a Bayesian network with the DAG X -> Z
A manufacturer produces and sells chilled, ready-to-eat pasta salad in round lots of 50 serving units each. These items have a very limited shelf life; therefore, if items are made but not sold, they have no value.
If two registered voters are selected at random, what is the probability exactly one voter is a democrat?
At times we can generate a regression equation to explain outcomes. For example, an employee's salary can often be explained by their pay grade, appraisal rating, education level, etc.
Captopril is a drug designed to lower systolic blood pressure. When subjects were tested with this drug, their systolic blood pressure readings (in mm of mercury) were measured before and after the drug were taken, with the results given in the ta..
We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of 20 observations having a sample mean of 8 and a sample standard deviation of 2. What is the standard error?
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