A software developer is interested in analyzing the proporti

A software developer is interested in analyzing the proportion of CPA\'s that use a certain accounting software. How many observations should be taken to estimate, at 95% confidence level, the population proportion within plusminus 1% Note that here desired margin of error is at most plusminus 0.01 which is plusminus 1% expressed in decimal form. A random sample of 198 CPA\'s was collected. 85 CPA\'s out of the sample reported using the specific software. Find a 99% confidence interval for the proportion of CPA\'s that use that particular software. It is believed that the mean body temperature of healthy adults is 98.6 Degree F. A premed statistics student took an SRS of 10 adults and found the average body temperature for the sample is 98.2 Degree F. Does her data indicate that the mean body temperature of healthy adults may be less than 98.6 Degree F Let Mu be the mean body temperature of healthy adults. State H_0 and H_a that you will test regarding the above question. Assume that the distribution of body temperatures of healthy adults is a normal distribution with Sigma = 0.62 Degree F. Find the test statistic and the P-value. Also determine whether H_0 is rejected at the alpha = 0.01 level. Write your conclusion in words.

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