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A botanist has developed a new hybrid cotton plant that can withstand insects better than other cotton plants. However, there is some concern about the germination of seeds from the new plant. To estimate the probability that a seed from the new plant will germinate, a random sample of 3000 seeds was planted in warm, moist soil. Of these seeds, 2510 germinated.
(a) Use relative frequencies to estimate the probability that a seed will germinate. What is your estimate? (Round your answer to 3 decimal places.)
(b) Use relative frequencies to estimate the probability that a seed will not germinate. What is your estimate? Use relative frequencies to estimate the probability that a seed will not germinate. What is your estimate?
The results for college x was a mean of 5 hours and an estimated population variance of 2 hours: for college y, m= 4, s 2 =1.5; and for college Z, M= 6, s 2 =2.5 what should you conclude? Use the .5 level.
Merta reports that 74% of its trains are on time. A check of 60 randomly selected trains shows that 38 of them arrived on time. Find the probability that among the 60 trains 38 or fewer arrive on time.
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
If the manufacturer stocks 100 components, what is the probability that the 100 orders can be filled without reordering components?
How would you apply radical expressions in everyday life? Give an example of the expression.
Write a short report dicussing the claim that average diastolic blood pressure in 1958 (variable dbp58) is the same for men who were alive in 1968 and for men who were not.
The changes on different days are assumed to be independent. What is the probability that after 2 days the stock will be at its original price? What is the probability that after 3 days the stock's price will have increased by 1 unit?
Test at .01 level of significance if mean number of number of calories for Brand A 16 oz. yogurt cups is greater than mean calories for Brand B 16 oz. yogurt cups.
A random sample of 20 patients in a weight loss clinical trial lost an average of 25 pounds over an 8 week period. The sample standard deviation is 10.
Would that daily sales figure be considered a potential outlier? why or why not? e) Find the probability that sales on a randomly selected day are at most $3445.
What is correlation? Does correlation directly support causation, what are both sides of the argument?
Assume that the process is in control and that the population of all jar fills is normally distributed.
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