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A biologist randomly selects 10 portions of water, each equal to .1 cm3 in volume, from the local reservoir and counts the number of bacteria present in each portion. The biologist then totals the number of bacteria for the 10 portions to obtain an estimate of the number of bacteria per cubic centimeter present in the reservoir water. Is this a binomial experiment?
Is the hypothesized propor- tion (0.25) within the interval? Given the presence or absence of the 0.25 value within the interval, is this con- sistent with the findings of the hypothesis test conducted in Exercise 10.109?
What is the estimate of the proporation of employees who do not use the ATM in a month? Develop a 95 percent confidence interval for the mean number of transactions per month.
let a b and c be independent random variables uniformly distributed over 05 03 and 04 respectively. what is the
If x is a binomial random variable where n = 100 and p = .1, find the possibility that x is less than or equal to 10 using the normal approximation to the binomial.
if np is greater than or equal to 15 and n1-p is greater than or equal to 15 what is the approximate shape of the
in analysis of variance which of the following is true if the f statistic is zero?a.all of the k sample means are
Calculate the total cost of interest for both mortgage options. How much does the buyer save in interest with the 20 year option ?
confidence interval estimate for the population mean is given to be 35.81 44.40. if the standard deviation is 10.126
The article isn't explicit about this, but in order for this to have been a well-designed experiment, it must have incorporated randomization. Brie?y explain where the researcher would have needed to randomize in order for the conclusion of the ex..
Suppose there was 2,500 cards in the inventory and how would the results be useful to the owner to estimate the total value of the inventory. What equation is best?
you wish to test the claim that u gt 11 at a level of significance of ? 0.05 and are given sample statistics n 50
She predicts correctly on 16 tosses. What is the probability of being correct 16 or more times by guessing? Does this probability seem to verify her claim?
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