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Suppose a marketing research firm sends questionnaires to 10 different companies. Assuming that each company, independently of the others, returns its completed questionnaire with probability 0.40, what is the probability that 5 or less questionnaires will be returned? Calculate also the probability that 7 or more questionnaires will be returned.
What reasons for complaints do you think the hotel should focus on if it wants to reduce the number of complaints? Describe.
Suppose a student received the following grades for the semester: History, B; Statistics, A; Spanish, C; and English, C. History and English are 5 credit hour courses
Determine the point estimate in this study? Compute the standard error in this example?
95% of breaking strengths will be contained between what two values symmetrically distributed around mean?
Girl B throws 15 times, with a prob. of success = 0.2. And girl C throws 20 times, with a probability of success equal to 0.1. Determine the probability that the target will get hit at least 12 times.
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
You calculate the difference in income as (after incentive plan - before incentive plan). You want to test whether income after the incentive plan is different from income before the incentive plan. What are the hypotheses for this test?
Identify a research issue, problem, or opportunity that uses data that has absolute zero measurements, ratio level data.
A diet is being developed which must contain at least 100 mg of vitamin C. Two fruits are used in this diet. Bananas contain 30 mg of vitamin C and Apples contain 20 mg of vitamin C. The diet must contain at least 100 mg of vitamin C. Which of the..
A random sample of 100 students at Southern University was collected. The mean age was found to be 24.2 years, with a standard deviation of 3.4 years.
A concessionaire for the local ballpark has made a table of conditional values for the different alternatives also states of nature
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
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