A financial talk show host claims to have a 63 % success rate in his investmentrecommendations. You collect some data over the next few weeks, and find that out10 recommendations, he was correct 3 times. If the claim is correct and theperformance of recommendations is independent, what is the probability that youwould have observed 4 or fewer successful recommendations out of 10?Enter answer as a percentage, accurate to two decimal places.

here given , A financial talk show host claims to have a 63 % success rate in his investment…

Answered: A financial talk show host claims 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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In 2009, 33% of Americans felt that one parent should stay home to raise the children instead of using day care. In a poll conducted in 2011, 416 out of 1015 Americans believed that one parent should stay home. At a 99% level of confidence, is there sufficient evidence to conclude that the percentage has increased from its 2009 value?
The police department wants to reduce the margin of error for their 95% confidence interval. If they narrow the confidence interval (without collecting anymore data), does this increase or decrease their level of confidence?
A psychologist studied the effect of defendants' likeability and nervousness on willingness to convict the defendant. Each participant read a transcrip a trial and watched a brief videotape that supposedly showed the defendant on the witness stand. The actor who played the defendant varied the for possibilities of likeable versus not and nervous versus not. After viewing the tape, participants rated the likelihood that the defendant is innocent (1 = unlikely, 10 = very likely). The data are given in the accompanying data table. Complete parts (a) through (d) below. Click the icon to view the data table. Click here to view page 1 of the table of cutoff values for the F distribution. Click here to view page 2 of the table of cutoff values for the F distribution. Click here to view page 3 of the table of cutoff values for the F distribution. Click here to view page 4 of the table of cutoff values for the F distribution (a) Carry out the analysis of variance (use the 0.05 significance…
This my third time posting the same question. Because no one answer it straight to me. I already answered the question. Could you please tell me which one of these are not correct. and if so Could you please tell me the correct answer first then explain it. Also could you please highlight the correct answer for each one
If medication A is 38% effective, what are the odds of medication A being effective? What are the odds of it not being effective?
Last year, the average math SAT score for students at one school was 475. The headmaster introduced new teaching methods hoping to improve scores. This year, the mean SAT score for a sample of students was 481. Is there statistically significant evidence that the new teaching method is effective? If the teaching method had no effect, there would be roughly a 3 in 10 chance of seeing such an increase. Does the result have statistical significance? Why or why not? Does the result have practical significance?
A statistical power of 95% implies that H0H0 is probably false. the p-value for the study will be 5%. it is very likely that H0H0 will be rejected if it is not true. the chance that the alternative hypothesis is true is 95%.
A FiveThirtyEight.com article reports that “Horror movies get nowhere near as much draw at the box office as the big-time summer blockbusters or action/adventure movies ... but there’s a huge incentive for studios to continue pushing them out. The return-on-investment potential for horror movies is absurd.” To investigate how the return-on-investment compares between genres and how this relationship has changed over time, an introductory statistics student fit a model predicting the ratio of gross revenue of movies from genre and release year for 1,070 movies released between 2000 and 2018. Using the plots given below, determine if this regression model is appropriate for these data
You plan to find a confidence interval for the percentage of children who have speech delays. A small pilot study finds that 6% of children have speech delays. If you want a 90% confidence interval with a margin of error of 3%, what is the minimum sample size you must take?
Based on predictive modeling, this upcoming Winter is going to have very unpredictable weather. The National Weather service is considering abolishing specific long-term forecasts, and instead will utilize a statistical model that predicts a mean of six significant snowfalls per month. Use this information to answer the following question correctly: Trying to be forward-thinking, I'm going to try planning my one month long Winter Break based around this model's predictions. I will only travel for the holidays if there is at most one significant snowfall over winter break. What is the probability of this happening? O 0.0174 O 0.0149 O 0.0025 O 0.0542
What does a rare outcome signifies?
You may need to use the appropriate appendix table or technology to answer this question. A survey asked senior executives at large corporations their opinions about the economic outlook for the future. One question was, "Do you think that there will be an increase in the number of full-time employees at your company over the next 12 months?" In the current survey, 228 of 400 executives answered Yes, while in a previous year survey, 176 of 400 executives had answered Yes. Provide a 95% confidence interval estimate for the difference between the proportions at the two points in time. (Use current year previous year. Round your answer to four decimal places.) to What is your interpretation of the interval estimate? The 95% confidence interval ---Select--- ✓zero. This suggests that the proportion of executives who are predicting an increase in full- time jobs for the current year is ---Select--- ✓ than the proportion of executives who were predicting an increase in full-time jobs for the…

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