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A real estate agent has four houses to sell before the end of the month by contacting prospective customers one by one. Each costumer has an independent 0.24 probability of buying a house on being contacted by the agent.
a) If the agent has enough time to contact only 15 customers, how confident can she be of selling all four houses within the available time?b) If the agent wants to be a at least 70% confident of selling all the houses within the available time , at least how many customer should she contact?(if necessary, extend the template downward to more rows)c) What minimum value of p will yield 70% confidence of selling all four houses by contacting at most 15 costumers?d) to answer (c) above more thoroughly, tabulate the confidence for p values ranging from 0.2 to 0.6 in steps of 0.05.
In a sample of 20 men, the mean height was 178 cm. In a sample of 30 women, the mean height was 164 cm. What was the mean height for both groups put together?
A random sample of n = 4 scores is obtained from a normal population with = 20 and = 4. What is the probability of obtaining a mean greater than M = 22 for this sample?
An entrepreneur owns two hotels, one in the western region of a certain state and the other in the eastern region. He thinks that the average amount spent by guests for lunch at his Friendly Café-West is less than $34.50
Find a 95 percent confidence interval for the true proportion of all current Bank of America customers who would respond with a 9 or 10.
In a survey of the 3000 boy scouts in the National Capital Area Council (NCAC), it is found that they have a mean weight of 135 lbs with a standard deviation of 15 lbs. How many of the boy scouts have weights between 120 lbs and 150 lbs.?
What percentage of bottles can we expect to have a volume less than 32 oz?
Determine the most economical monthly shipping schedule. Provide a table showing the routes and total costs.
What is the mean and standard deviation of the number preferring the incumbent and what is the probability that more than 68% will favor the incumbent?
Read the data from the fictitious research study regarding diabetes and alcohol consumption, and analyze and interpret the results.
would this prove that they are exceeding their goal, using α = .025?
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
If 49 participants (49 = size of the sample) are chosen randomly, what is the probabilty that their mean spent amount will be in $6 of population mean? (mean+/-6).
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