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The probability that a call received by a certain switchboard will be wrong number is 1 per 100 calls. Use poisson approximation to the binomial distribution to find the probability that among 120 calls recieved by the switchboard.
1. There are no wrong #'s2. Exactly 1 wrong #3. Exactly 2 wrong #'s4. Exactly 3 wrong #'s5. At most 3 wrong #'s
Describe the basic characteristics of a normal distribution and the normal curve. What are z scores and how are they used in relation to distributions and raw scores?
Determine the 95% confidence interval for true percent of car owners in this city who received the speeding ticket this year. Explain your results to nearest hundredth of percent.
In the bank customer waiting time case, a bank manager had developed a new system to reduce the time customers spend waiting to be served by tellers during peak business hours.
List the sample space. Determine the exact probability of creating a mini license plate with an E. Give solution exactly in reduced fraction form.
What is the probability that a cereal would be high calorie, given that it is high fiber? In other words, what is P (high calorie, given high fiber)?
Assuming that the dogs did better than what would be expected with random guessing, did they do well enough to be used for actual medical diagnoses? Why or why not?
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
Median $2.4 million, modal sales $2.6 million and standard deviation of distribution is $500,000. Determine the Pearson's coefficient of skewness?
Use the t-distribution table to find the critical values for the indicated alternative hypothesis, level of significance, a and sample size n1 and n2. Assume that the sample are independent, normal and random. Ha: u1
A sample of 60 night shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift larger?
Probability of fair market is 0.4, and probability of bad market is 0.2, and he wants to maximize his long-run average return. Create the decision table for this problem.
A discrete random variable Y takes the value -1, 0 and 1 with probabilities 1/2θ, 1- θ and 1/2θ respectively. Let Y1 and Y2 be two independent random variables, each with the same distribution as Y.
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