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Question: In a research study in cattle breeding, 159 of 273 cows in several herds that were in estrus were detected by means of an intensive once a day, one-hour observation of the herds in early morning.
a. Give a point estimate of the proportion of all cattle in estrus who are detected by this method.
b. Assuming that the sample is sufficiently large, construct a 90% confidence interval for the proportion of all cattle in estrus who are detected by this method.
About 80% of young adult Internet users (age 18 to 29) in a certain locale use social networking sites. The sample proportion for this population would follow approximately a Normal distribution with what mean and standard deviation for a rand..
Assessment 3 gives you the opportunity to apply theory and research in a practical way by critically analysing the practice of strategic HRM in organisations. You have three options to choose from in this assessment task. Prepare a report that ans..
Would you expect the variance to be larger or smaller than the variance associated with the probability function used in the previous exercise? Verify your answer by computing the variance.
The company will replace any printer that fails during the guarantee period. How long should speedy jet printers be guaranteed if the company wishes to replace no more than 15% of the printers?
The primary factors being investigated were vitamins A and E (measured in international units per month). Data for 1500 women over 54 years of age are given in Table E1.19. Calculate the odds ratio associated with a decrease (exposure is low consu..
for the chi-square test for goodness of fit what is the value of df for a test with four categories and a sample of n
we know many types of data fall into a normal distribution with most of the observations falling toward the middle.
The probability that an individual egg in a carton of eggs is cracked is 0.03. You havepicked out a carton of 1 dozen eggs (that’s 12 eggs) at the grocery store.
Doug has defined the event "It will rain" like this: Today, it will either rain or it will not, but not both. He calls the weather service and they.
The weight of children in the U.S. are normally distributed with a mean of 8.0 pounds and standard deviation of 1 pound
Twenty volunteers aged 40 to 65 years old will participate in an experiment to compare two methods of memorizing information.
Suppose three Fiat 500E's are selected at random. What is the probability that all three will have a time to fully recharge greater than 2.5 hours?
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