additional data‚ BIS decided to do some preliminary analysis of the data already collected. Managerial Report 1. Use appropriate descriptive statistics to summarize the data on assets and yields for the money market funds. 2. Develop a 95% confidence interval estimate of the mean assets‚ mean 7-day yield‚ and mean 30-day yield for the population of money market funds. Provide a managerial interpretation of each interval estimate. 3. Discuss the implication of your findings in terms of how
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------------------------------------------------- Chapter 7: 7.11 Suppose that we will randomly select a sample of 64 measurements from a population having a mean equal to 20 and a standard deviation equal to 4. A. Describe the shape of the sampling distribution of the sample mean x. Do we need to make any assumptions about the shape of the population? Why or why not? ------------------------------------------------- This would be a normally distributed bell shaped curve. We do not need
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the trip‚ Sophie overcomes many of her fears by stepping outside of her shell. She learns to transform from a shy lonely “amoeba” to “Sophie La Fuerta‚” part of a tightly knit “organism.” Readers are drawn to the main character Sophie as she gains confidence‚ learns important life lessons‚ and falls in love. Being so different from everybody Sophie gets loads of attention that she doesn’t know how to handle without being afraid. At the beginning of the book Sophie is definitely not the kind of girl
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Reflective Writing Tips Reflective writing is where you revisit experiences and write down your thoughts about them‚ asking questions such as: • "What did I notice?" • "Why did it happen this way?" • "How was I changed by this?" • "What might I have done differently?" • "How could I have handled the situation differently in hindsight?" • " What have I learnt about myself?" • " How do I interact in a team?" • "How did I feel?" • "Why did I react the way I did?" • "How can I improve
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0.02² N = 862.55 => 863 (Always Round Up) Example 9.63 Pg. 297 A national political candidate has commissioned a study to determine the percentage of registered voters who intend to vote for him in the upcoming election. To have 95% confidence that the sample percentage will be within 3 percentage points of the actual population percentage‚ how large a simple random sample is required? Given Data π = 0.5 = 50% *Use 0.5 or 50% when the percentage is not expressed in the problem. z =
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The Health and Safety Executive Statistics 2009/10 Statistician lead: Kate Sweeney Contact: StatisticsRequestTeam@hse.gsi.gov.uk A National Statistics publication National Statistics are produced to high professional standards set out in the National Statistics Code of Practice. They undergo regular quality assurance reviews to ensure that they meet customer needs. They are produced free from any political interference. 2 Health and safety statistics highlights 2005 Contents
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The Foreign Direct Investment (FDI) Confidence Index influences a business’s future decisions for ventures on foreign soil. Businesses use the index to compare countries for the most and potentially best prospective investment in order to profit from expansion. The FDI Index lists the top countries that are projected to be the most compelling to directly invest in fixed and variable assets in order to achieve management control (Ball‚ Geringer‚ Minor‚ & McNett‚ 2010). According to Ball‚ Geringer
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the interval estimate to be no more than $100. They estimate that such bills range from $600 to $2‚500. How large a sample should they take? The margin of error for this confidence interval for the mean is 100=Z*SD/sqrt(n). To solve for N: sqrt N=Z*SD/1.645‚ now square both sides: N=[Z*SD/100]^2 The Z score for a 90% confidence interval is 1.645. The SD standard deviation is 2500-600=1900 1900/4 N=[1.645*(1900/4)/100]^2=62 A sample of 62 is needed. Your sample data has mean 3.1948 and standard
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the data points lie above 8. The mode rating is 9. We are 95% confident that the population rating of assistant teachers at Steele School who are chosen is between 7.091 and 8.623; however‚ since the distribution is not normally distributed‚ the confidence interval is not applicable. Group 2 The data is normally distributed. 21 parents are surveyed. The ratings range from 3 to 10. The average rating is 6.29‚ with a standard deviation of 1.648. Approximately half of the data points lie above 6. There
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copied off the internet as their own‚ copied answers off another student’s exam‚ or collaborated with other students on projects that were supposed to be completed individually) to summarize the data and comment on your findings. 2. Develop 95% confidence intervals for the proportion of all students‚ the proportion of male students‚ and the proportion of female students who were involved in some type of cheating. 3. Conduct a hypothesis test to determine if the proportion of business students
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