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The probability that certain make of car will require repairs in the first six months is 0.31. A dealer sells 5 such cars. Determine the probability that at least one of them will need repairs in th
Determine the probability that a randomly chosen student listens to music while studying given that the student is female. Write only a number a your answer. Round to two decimal places (for example:
Throughout the 2009 tax filing season, 15.8% of all individual U.S. tax returns were prepared by H&R Block. For random selection of 3 tax returns, explain
A town council includes 10 Democrats and 15 Republicans. In response to developer's request for variance which would allow her to build a convenience store in area of town currently zoned as residen
Assume the Lakers are to play the Heat in best of seven series. Supposing the teams are evenly matched, determine the probability that the Lakers will win the series in (a) exactly six games? (b) si
A small computing center has found that number of jobs submitted for each day to its computers has a distribution that is approximately bell-shaped and symmetric, with a mean of 76 jobs and a standa
Assume that at UVA, 75% of all undergraduates are in the College, 10% are in Engineering, 8% are in Commerce, 4% are in Nursing, and 3% are in Architecture. In each school, the percentage of females
Determine the operating breakeven point? Illustrate by means of a chart. Determine Niendorf's degree of operating leverage at sales of (i) 125,000 and (ii) 175,000 units?
Explain in your own terms, how to set up a p- value to test hypothesis. Describe in your own terms, how to set up a critical region to test hypothesis
A telemarketer calls people and tries to sell them the subscription to daily newspaper. On 19% of her calls, there is no answer or line is busy. She sells subscriptions to 6% of the remaining calls
Discuss in detail and in your own terms the steps to take to determine the confidence interval for the mean of the population.
Determine the probability of the Dow Jones Industrial Average increasing in 9 or more of the 11 U.S. presidential election years if the true probability of an increase in the Dow Jones Industrial Av
Assume that the weight of cereal in a box is normally distributed around a mean of 20, measured in ounces, with a standard deviation of 0.11. What is the z value for a box with 19.85 ounces of cerea
Assume you've a random variable that is uniformly distributed between 12 and 750. Determine the probability of observing a random draw greater than or equal to 235? Please show work.
Compute a 99% confidence interval on the mean time required to solve a problem. Another algorithm takes average of 6.6 cpu time. The solutions obtained are equivalent. Does new algorithm appear to be
Let Y be normally distributed with the mean = 3 and standard deviation = 12. A random sample, n = 9, is observed, and sample mean, Y-bar is computed. Determine the mean of Y-bar.
It has been conjectured by U.S. Census Bureau that "approximately 60% of foreign-born people who live in U.S. aren't naturalized citizens".
Even if distribution of mothers' ages were somewhat skewed, would this confidence interval procedure still be valid with these data? Explain why or why not.
Assume you want to estimate the proportion of people in your community who would choose Thin Mints as their favorite Girl Scout cookie. Also suppose previous studies have shown this proportion to be
Assume that Y takes upon the values {0, 1, 2, 3}, each with probability 1/4. Take random sample of 5 numbers from this distribution. In how many possible samples can the sum of the five numbers (Y1
Assume that Y takes upon the values {0, 1, 2, 3}, each with probability 1/4. Take random sample of 5 numbers from this distribution. In how many possible samples can the sum of five numbers (Y1 + Y2
Assume that population of people has an average weight of 160 lbs, and standard deviation of 50 lbs, and that weight is normally distributed. A researcher samples 100 people, and determines their w
Assume a certain capsule is manufactured so that the dosage of the active ingredient follows the distribution Y ~ N(? = 10 mg, ? = 1 mg). A dosage more than 13mg is considered dangerous.
Sport utility vehicles (SUVs), vans, and pickups are basically considered to be more prone to rollover than cars. In 1997, 24.0% of all highway fatalities involved rollovers; 15.8% of all fatalities
A ferritin test is popular test to determine a person's current iron stores. In women, ferritin is approximately normally distributed with mean of 89 ng/ml and standard deviation of 23 ng/ml.