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1. The manager of a restaurant knows from experience that 70% of the people who make reservations for the evening show up for dinner. The manager decides one evening to overbook and accept 20 reservations when only 15 tables are available. What is the probability that more than 15 parties will show up?
2. An advertising research study indicates that 40% of the viewers exposed to an advertisement try the product during the following four months. If 100 people are exposed to the ad, what is the probability that at least 20 of them will try the product in the following four months?
Description of the study including the purpose and importance of the research question being asked. What is your null hypothesis? What is your research or alternative hypothesis? Your introduction should include at least two resources. These resou..
How long they stay on each visit. How would you suggest taking this sample? What type of sampling have you described?
361 college students recorded the number of hours of tv they watched per week. the average is 6.504 hours with the
What are the appropriate H0 and Ha for each of the following research studies? In addition, note whether the hypothesis test is one- or two-tailed.
Probability about 0.2 of suggesting that the person is deceptive. What is the probability that the number classified as deceptive is less than the mean?
a researcher is trying to find out whether there is a difference in the racial mix measured as caucasian asian african
Which of the following statements regarding the coefficient of correlation is true. A value of 0.00 indicates two variables are not related.
Out of the total nuts manufactured by a company 0.5 percent became defective. The nuts are supplied in packets of 40. Find out the probability number of packets containing.
A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of 20 to 80. In a recent year, the national mean score for the writing section was 47.2 , with a standard deviation of 10.2.
Let ρk = λk/μk and ρ = ρ1+ρ2+·· ·+ρK . In particular, show, as before, that the probability of n customers in the system is Qn = p(0, ... , 0)ρn/n! for 0 ≤ n ≤ m.
Ffind the mean, variance and standard deviation of binomial distribution? what valuses of the random variable X would you consider unusual?
the probability is 1 that an electrical connector is kept dry fails during the warranty period of a portable computer.
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