# Question: In each of parts a c we have given a likely

In each of parts (a)–(c), we have given a likely range for the observed value of a sample proportion pˆ. Based on the given range, identify the educated guess that should be used for the observed value of pˆ to calculate the required sample size for a prescribed confidence level and margin of error.

a. 0.4 to 0.7

b. 0.7 or greater

c. 0.7 or less

d. In each of parts (a)–(c), which observed values of the sample proportion will yield a larger margin of error than the one specified if the educated guess is used for the sample-size computation?

a. 0.4 to 0.7

b. 0.7 or greater

c. 0.7 or less

d. In each of parts (a)–(c), which observed values of the sample proportion will yield a larger margin of error than the one specified if the educated guess is used for the sample-size computation?

**View Solution:**## Answer to relevant Questions

x = 8, n = 40, 95% level. we have given the number of successes and the sample size for a simple random sample from a population. In each case, do the following tasks. a. Determine the sample proportion. b. Decide whether ...x = 3, n = 100, 99% level. We have given the number of successes and the sample size for a simple random sample from a population. In each case, do the following tasks. a. Determine the sample proportion. b. Decide whether ...Suppose that you have been hired to estimate the percentage of adults in your state who are literate. You take a random sample of 100 adults and find that 96 are literate. You then obtain a 95% confidence interval of 0.96 ± ...A company manufactures goods that are sold exclusively by mail order. The director of market research needed to test market a new product. She planned to send brochures to a random sample of households and use the proportion ...Consider a population in which the proportion of members having a specified attribute is p. Let y be the variable whose value is 1 if a member has the specified attribute and 0 if a member does not. a. If the size of the ...Post your question