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In response to concerns about nutritional contents of fast foods, McDonald's has proclaimed that it will use the new cooking oil for its french fries which will decrease substantially trans fatty acid levels and increase amount of more beneficial polyunsaturated fat. Company claims 97 out of 100 people can't detect difference in taste between new and old oils. Suppose that is figure is correct (as a long run proportion), determine the approximate probability that in random sample of 1000 individuals who have purchased fries at McDonald's:
a) At least 40 can taste difference between two oils?b) At most 5% can taste difference between two oils?
What fraction of the calls last between 4.2 and 5 minutes?
An accounts receivable auditor is examining accounts for a client. The accounts receivable balance can be considered as a continuous random variable that exhibits normal distribution characteristics.
The Minneapolis Star Tribune newspaper has decided to write an article about gasoline prices in the Twin Cities area (Minneapolis and St. Paul).
When the underlying average of a time series is very stable and there is no trend, cyclical, or seasonal influences,
What is the probability that 0, 1, 2, or 3 hypertensives will be identi ed in such sibships if the hypertensive status of 2 siblings in the same family are independent events?
A study by Hewitt Associates showed that 79% of companies offer employees flexible scheduling. Suppose a researcher believes that in accounting firms this figure is lower.
Assume the population is normally distributed, the confidence level is 95%, n = 12, and σ is unknown.
To perform a certain type of blood analysis, lab technicians must perform two procedures. The first procedure requires either 1 or 2 separate steps, and the second procedure requires either 1, 2, or 3 steps. a) List the experimental outcomes assoc..
An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. At the end of the semester, she has the following grades.
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
Capital punishment law is among the most complex bodies of law in the US. As a result of frequent errors, the Trial Judges Assn. has developed a special training course to try to cut down on the errors.
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