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Financial analysts like to use the standard deviation as a measure of risk for a stock. The greater the deviation in a stock price over time, the more risky it is to invest in the stock. However, the average prices of some stocks are considerably higher than the average price of others, allowing for the potential of a greater standard deviation of price.
For example, a standard deviation of $5.00 on a $10.00 stock is considerably different from a $5.00 standard deviation on a $40.00 stock. In this situation, a coefficient of variation might provide insight into risk. Suppose stock X costs an average of $32.00 per share and showed a standard deviation of $3.45 for the past 60 days. Suppose stock Y costs an average of $84.00 per share and showed a standard deviation of $5.40 for the past 60 days. Use the coefficient of variation to determine the variability for each stock.
randomly selected nonfatal occupational injuries and illnesses are categorized according to the day of the week that
Suppose that three teachers apply for positions in the school, obtaining scores of 18, 32, 42, respectively, on the teacher certification test. Compute their predicted ratings of teacher effectiveness.
Draw the decision tree and perform a decision tree analysis of Steeley Associates decision situation using expected monetary value and what is the value of the information provided by Bernard Consultants (EVSI)? Give a recommendation as to whether ..
Probability values based on normal distribution - What can you say about the shape of the distribution of sample mean and find the standard error of the distribution of the sample mean?
montarello and martins 2005 found that fifth-grade students completed more mathematics problems correctly when simple
The probability that the patient enters a law suit is 0.9. What is the probability that the doctor makes an incorrect diagnosis and the patient sues.
what are the three most important things you learned about sampling? write 5 sentences
4 cards are drawn from a deck of cards without replacement what is the probability that at least 1 of the cards is a
Which samples show unequal variances? Use α = .05 in all tests. Show the critical values and degrees of freedom clearly and illustrate the decision rule.
People arrive at a restaurant at a rate of five per minute and wait to receive their order for an average of 5 mins. Customers eat in with a probability of 0.5 and carry out with a probability of 0.5.
a study was conducted with vegetarians to see whether the number of grams of protein each ate per day was related to
Assume that the population means are to be estimated from the sample described below. Use the sample results to approximate the margin of error and 95% confidence interval
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