QUESTION SAn investment analyst wants to establish whether there is a change in the mean rate of return for 12 types of investments. The analyst selected a sample of101 and conducted an ANOVA test that is shown as follows.VariationSdfMSFBetween366(Treatment)Within (Error)Total735?The Within (Error) mean squares is equal to?(Round answer to three decimal places ex. 2.091)QUESTION 6ck Save and Submit to save and submit. Click Save All Answers to save all answers.

The Within (Error) degree of freedom is equal to, dfError=n-k =101-12 =89 The…

Answered: An investment analyst wants to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You are the product manager for Carl's ice cream. The company president asked you to determine if Carl's ice cream has equal sales as Ole ice cream, which is a strong competitor. The table below contains weekly sales for competing brands for randomly selected 4 approximately equal size stores that did not follow a normal distribution. (Use two digits after deimal point) Carl's Sales Ole Sales 1500 2000 1700 2500 1800 2500 1700 2300 Is there a difference between mean sales at a=5%? a. Ho Hi: Since test statistic = + than critical value = . we * and Therefore mean sales are b. Can it be concluded at 5% significance level that the population median sales for Carl's ice cream exceeds 1600? Ho H: test statistic = Since a=0.05 is * than the p-value = There is * evidence to conclude that median sales for Carl's ice cream is * 1600.
The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts for the period indicated and error calculations. 155, 145, 155, 162, 180, 165, 172, 149, 170, 172 Naïve Method What is the Mean Squared Error (MSE)? What is the Mean Absolute Percentage Error (MAPE)?
Current Attempt in Progress How Many Birds Do Domestic Cats Kill? "Domestic cats kill many more wild birds in the United States than scientists thought," states a recent article.1 Researchers useda sample of n = 140 households in the US with cats to estimate that 35 % of household cats in the US hunt outdoors. A separate study? used KittyCams to record all activity of n = 55 domestic cats that hunt outdoors. The video footage showed that the mean number of kills per week for these cats was 2.4 with a standard deviation of 1.51. Find a 90 % confidence interval for the mean number of kills per week by US household cats that hunt outdoors. Round your answers to three decimal places. The 90 confidence interval is
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K A commuter tallied the time to work for 200 days and found that it resembled a normal curve. The mean time was 50 minutes, and the standard deviation was 2 minutes. For the 200-work-day experiment, find the percent of time commuting to work less than 44 minutes. 44 Minutes to Commute to Office 1 46 48 68%- 95% 99/7% 50
You were creating a run chart using non- metric data and found that n_1 for run-ups was 14, and n_2 for run-downs was 14. What was your V(R)? 1.96 6.74 11.03 14.00
Summarize your data in the table (see attached) Compute for the mean. Present your data in a table (an example is shown below) to be presented in the ‘Results and Discussion’ section of your output. GENDER Phy MIDTERM GRADE FINAL GRADE AVERAGE GRADE Com MIDTERM GRADE FINAL GRADE AVERAGE GRADE FEMALE 91 91 91 99 87 93 FEMALE 89 92 91 87 85 86 MALE 88 72 80 90 92 91 FEMALE 94 94 94 86 92 89 MALE 87 79 83 89 86 88 MALE 82 81 82 88 86 87 MALE 79 72 76 87 88 88 MALE 81 84 83 83 73 78 MALE 89 88 89 82 95 89 FEMALE 94 84 89 86 76 81 FEMALE 90 89 90 86 93 90 FEMALE 92 88 90 83 80 82 FEMALE 93 94 94 95 95 95 MALE 91 91 91 93 94 94 FEMALE 93 89 91 88 81 85 FEMALE 92 94 93 94 91 93 FEMALE 92 95 94 98 97 98 FEMALE 95 92 94 90 98 94 FEMALE 90 92 91 89 99 94 FEMALE 92 86 89 90 98 94 FEMALE 94 95 95 98 96 97 FEMALE 91 92 92…
The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts for the period indicated and error calculations. 155, 145, 155, 162, 180, 165, 172, 149, 170, 172 Naïve Method What is the Mean Squared Error (MSE)? What is the Mean Absolute Percentage Error (MAPE)?
I tried the two last choice both of them are wrong.
Women stereotypically talk more than men do and researchers wondered how much more. Suppose a study attempted to determine the difference in the mean number of words spoken by men or women per day. The results of the study are summarized in the table. Group Populationmean Samplesize Samplemean Sample standarddeviation Standard errorestimate women ?w (unknown) ?w= 36 ?⎯⎯⎯w= 14704 ?w=6215 SEw=1036 men ?m (unknown) ?m= 24 ?⎯⎯⎯m= 15022 ?m=7864 SEm=1605 df=41.4224 Assume the conditions are satisfied for a two‑sample ?‑confidence interval. First, determine the positive critical value, ?, for a 95% confidence interval to estimate how many more words women speak each day on average compared to men, ?w−?m. Give your answer precise to at least three decimal places. Determine lower and upper limits of a 95% confidence interval for how many more words speak each day on average compared to men. A negative number would indicate how many fewer words women speak each day on average…
a. Use a = 0.10 to test for a statistically significantly difference between the population means for first- and fourth-round scores. What is the p-value? t-value (to 3 decimals) Degrees of freedom p-value is greater than 0.20 What is your conclusion? There is no significant difference between the mean scores for the first and final rounds. b. What is the point estimate of the difference between the two population means? (to 2 decimals) For which round is the population mean score lower? First round c. What is the margin of error for a 90% confidence interval estimate for the difference between the population means? (to 3 decimals) Could this confidence interval have been used to test the hypothesis in part (a)? Yes Explain. Use the point of the difference between the two population means and add and subtract this MOE. If zero is in the interval the difference is not statistically significant. If zero is not in the interval the difference is statistically significant.

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