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The number of complaints that a dry-cleaning establishment receives per day is a random variable having a Poisson distribution with λ = 3.3. Use the formula for the Poisson distribution to find the probability that it will receive only two complaints on any given day.
the amount of time in minutes devuted to commercials on a tv channel during any half-hour program is a random variable
A questionnaire will be published and the first 1000 completed questionnaires will be analyzed. Which of the following errors will be associated with the sample? Sampling errors only.
Construct a 95% confidence interval for the proportion of red candies. Using your same data determine if the proportion of green candies in a package of M&Ms is differen than what is claimed by the company.
Each organization gets a 90% confidence interval. About how many of these intervals should cover the population average?
a random sample of 10 parking meters in a beach community showed the following incomes for a day. assume the incomes
With each hypothesis, indicate whether the appropriate analysis would be a one-tailed test or a two-tailed test and indicate a type I and type II error, given the context of the hypothesis.
brian smith sells a set of movie posters 12 and baseball cards 8 at a local flea market. on last sunday brians total
recent information published by the u.s. environmental protection agency indicates that honda is the manufacturer of
The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0. Assume 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 71.
Estimate and interpret the p-value of the calculated test statistic.
Use the correct formula to find the probability that, out of 45 houses, exactly 4 of the houses will be burglarized. Show your calculations or explain how you found the probability.
The sample mean was $22,098 and the standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased?
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