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a. Ameteorologist in Denver recorded Y =the number of days of rain during a 30-day period. Does Y have a binomial distribution? If so, are the values of both n and p given?
b. A market research firm has hired operators who conduct telephone surveys. A computer is used to randomly dial a telephone number, and the operator asks the answering person whether she has time to answer some questions. Let Y = the number of calls made until the first person replies that she is willing to answer the questions. Is this a binomial experiment? Explain.
If they would like to estimate the true average time to within 1.9 minute (with 95% confidence) what sample size should they use? (remember to round to the next largest integer.)
suppose that 70 of eligible residents of phelps county will actually vote in an upcoming election. consider randomly
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades?
Suppose that 56% of students at a university are in the College of Business. A sample of 803 students is taken. What is the probability that the sample proportion of students in the College of Business is greater than 53%?
a) What type of research uses numeric measurement data? b) What type of research uses a research hypothesis? c) What type of research does not use statistical data analysis?
what is the concept of normal distribution and analyze why it is a widely used probability
the random variable x the time to failure in thousands ofmiles driven of the signal lights on an automobile has a
The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute.
Is the distance beyond or before the double lines where a car stops at an intersection affected by the age of the driver (young, middle age, older) and/or whether or not there are any passengers?
The availability of venture capital provided by big boost in funds available to companies recent years. According to Venture Economics, 2,000 venture capital disbursements were made in 1999.
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
What values would be appropriate for the performance measures listed in the preceding problem for the case in which two tellers are available?
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