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In a binomial distribution, for each of n trials, the event result of the first trial influence the next trial.
1. the mean television viewing time for americans is 15 hours per week money november2003. suppose a sample of 60
A family has 5 children and 1 of them is a boy...the percentage of boy is 1/5, or .020. Do you think one could say the chances of any woman having a boy would be 1/5? Explain your answer.
A month of sales data are collected on sales of different types of computer products Run the t-tests to determine:
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
There is 0.75 probability that you will get promotion or raise. Probability of getting promotion and raise is 0.50. Determine the probability to receive a raise.
Are the data sufficient to that the herb has a significant effect on memory? Use a two-tailed test with α = .05.
If the standard deviation is $1050, how large a sample is needed to get the desired information and to be accurate within $200?
The bacteria Escherichia coli are commonly found in the human bladder. Suppose that 3000 of the bacteria are present at time t-0. Then t minutes later, the number of bacteria present can be approximated by:
1 % of healthy population tested. If 0:5% of population really has disease, determine the probability that person has disease given that test result is positive.
The manager of a local branch of a bank believes that over the past few years the bank has begun to cater to a different clientele and that the average amount withdrawn from its ATMs is no longer $140.00.
The first unit required 9800 hours to manufacture. The company expects to experience an 82% unit learning curve. Estimate the cost of the 20th unit. (Round intermediate calculations to 4 decimal places)
the productivity of a factory has been recorded over 10 months together with forecasts made the previous month by the
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