Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A regular six-faced fair die will be rolled 144 times. Let X be the sum of the 144 numbers obtained. Find the approximate probability that X is between 463 and 545.
a manager of a supermarket estimated that 87% of customers use coupons in their grocery purchases. How large a sample is required to estimate the true proportion to within 0.01 with 98% confidence?
The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on gener
Use α = 0.05. (Hint: this is equivalent to saying, "what is the probability that we will reject the null hypothesis given that it is false?")
In a second grade class containing 14 girls and 8 boys, 2 students are selected at random to give out the math papers. What is the probability that both are girls?
The two cars drove a combined total of 1450 miles, and the sum of their fuel efficiencies was 40 miles per gallon. What were the fuel efficiencies of each of the cars that week?
Sample data for daily production rate of fiber body of spots car is given below: 17, 21, 18, 27, 17, 21, 20, 22, 18, 23. The company production manager feels that a standard deviation of more
The following data are scores on a management examination taken by a group of 22 people: 88, 56, 64, 45, 52, 76, 54, 79, 38, 98, 69, 77, 71, 45, 60, 78, 90, 81, 87, 44, 80, 41. Find the
A student decided that this is a binomial distribution problem. The student found that the probability of all four engines failing is 4.1E-09. Is that answer correct?
In a computerized entrance test, 20 candidates appear on a particular day. Their scores are: 9, 6, 12, 10, 13, 15, 16, 14, 16, 17, 14, 16, 24, 21, 22, 17, 18, 19, 18, 20. Find the Mode and the
Starting salary fro employees in the state is less than $30,000 per year. test hypothesis she collect a simple random sample of 100 starting clerical salaries and found that the sample mean is $29,7
What is the probability that if you randomly select a student on campus, this is student is male OR majoring in business? Make sure your answer is in decimal form and not percentage form.
What sampling method is best suited for such a survey? Why? Draw the sample using the random number table and bring out the rationale of the procedure. Limit your sample to 25 persons.
Your friend owns a cat and a dog. What is the probability that she spends more on medical care for her dog than for her cat in a given year?
A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the
Pizza King is considering charging $5, $6, $8, $9, or $11 for a pizza. Use each decision criterion (maximin, maximax, minimax regret, expected value) to determine the price that Pizza King should ch
Explain why this is binomial experiment. find the probability that between 8 and 10 (inclusive) of them started smoking before the age of 18.
If the sample size is n=100, find the mean and standard deviation of the distribution of sample means.
In a certain college 33% of the physics belong to ethnic minorities. Find the probability that from a random sample of 10 students who are physics majors, 2 belong to an ethnic minority.
A physical fitness asociation is including the mile run in its secondary -school fitness test .The time for this event for boys in secondary is known to posses a normal distribution with a mean of 4
Determine the appropriate post-hoc for this situation and report the results in proper APA format. Also, can you explain the different types of information provided by p-value and confidence interva
Assume you are a manager for the Bureau of Human Services. As a manager, you feel one of your employees named Michael has not performed up to standards on a particular task of processing case record
What is the probability that the shipment will be rejected? If the retailer inspects 6 of the CD shipment what is the probability that the shipment will be accepted?
CRA,CD's, Inc., wants the mean lenghts of the "cuts" on a CD to be 135 seconds (e minutes and 15 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10 minu
Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. find the probability that a person on this diet losses more than 1