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The manager of a large department with three floors reports that time a customer on the second floor must wait for an elevator has a uniform distribution ranging from 0 to 4 minutes.
(a.) find the mean and standard deviation of x, the time a customer on the second floor waits for an elevator.
Discuss a hospitals total maintenance costs, and use regression analysis to estimate the fixed cost element of maintenance and the variable cost associated with the number of patient-days.
Use the normal distribution to approximate the desired probability. Find the probability that in 200 tosses of a fair die, we will obtain at exactly 30 faces.
Bell-shaped with a mean of $45, 000 and a standard deviation of $3, 500. What percentage of teachers earn anywhere from $38, 000 to $48, 500?
Distances from the past year and carry out a hypothesis test for its suspicion. State the null hypothesis and the alternative hypothesis that it would use for this test.
Share 1 real-world binomial distribution situation and 1 real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson.
Finding the probability of a pointer to land in a color among given three colors.
The intelligence Quotient test scores normally distributed with a mean of 100 and a standard deviation of 15.
A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The Traffic Department claims that a modification in the type of light will reduce these accidents.
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Develop a 95% confidence interval of the difference between the daily population means for the two airports.
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
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