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Consider a large population of families with three children each. If the genders of children in any family are independent of one another, the number of male children in any family will have a binomial distribution based on three trials. Suppose a random sample of 160 families yields the following results. test significance level 0.05
# of children 0 1 2 3
Frequency 14 66 64 16
Determine the point estimate in this study? Compute the standard error in this example?
A firm has tendered for two independent contracts. It estimates that it has probability 0.4 of obtaining contract A, and probability 0.1 of obtaining contract B. Find the probability that the firm:
Now assume institutional cache is used. Hit rate for cache is 0.6. Determine the total average response time.
Explain how the marketing analyst can use independent samples to collect the data.
The board of directors of Saner Automatic Door Company consists of 12 members, 3 of whom are women.
A plane has two alternators with the probability that a given alternator will fail on a l hour flight is .02. What is the probability that both will fail
Test whether the weight reducers on average will lose less than 10 pounds using P-value approach.
A stationery store to estimate the mean retail value of greeting cards purchased by its customers when they visit the store. A random sample of 15 customers indicates a mean amount of $2.55 with a standard deviation of $0.44 per customer per visi..
Given that a respondent is over age 50, what is the probability that he or she gets news primarily from newspapers?
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
Nine percent of undergraduate students carry credit card balances greater than $7000. Presume 10 undergraduate students are selected randomly to be interviewed about credit card usage.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
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