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An auditor examined data flow diagrams in a small portion of system development projects and determined that there were nearly 12% of them with errors. The Vice-President for Development wants a better estimate of the percentage so you are tasked to sample the diagrams produced for the past five years and report back.
a) How large a sample would you have to examine to be 95% certain that your estimate would be within 3% of the actual percentage? Explain how you arrived at your answer.
b) Given your answer to part a), how will you arrive at the estimate that you will report back to the vice-president?
Describe the purpose of transforming raw scores into standard scores. Describe what "normal distribution" means.
in designing an experiment involving a treatment applied to 5 test subjects researchers plan to use a simple random
Assume that p-value was 0.07, would you reject null hypothesis of equal mean rates for a Type- I error rate of 5%? (Circle one).
Based on these data, is it plausible that the proportions of female office workers who often feel abused at work are the same for these countries?
Forty percent of the homes constructed in the Quail Creek area include a security system. Three homes were selected at random. What is the probability all three homes selected have a security system?
Discuss the Population and size and the target population and brief reasoning - Calculate the sample size using a 95% confidence level, and a 5% margin of error.
If writing scores for population have standard deviation of σ = 20, does sample give adequate evidence to conclude that new composition course has significant effect?
Knowing nothing about any team, you flip fair coins to decide every one of your 63 bets. Compute the expected number of points
Find the probability that the seniors owe between $2500 and $3821.
a. Construct an ordered stem and leaf display to sort the data. b. After examining the stem and leaf display prepared in a., comment on the possible distribution of the number of cases purchased by the supermarket chain.
Which of the following pH values is nearest to the isoelectric point (the point at which the overall net charge is zero) for this amino acid: 1.1, 5.3, 12.2? Explain your answer.
Is there a statistically significant relationship between gender and party preference?- Compute column percentages for the table to clarify the pattern of the relationship.
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