Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of theoverall stock market. On January 31, 2006, 9 of the 30 stocks makıng up the DJIA increased in price (The Wall StreetJournal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stockstraded on the New York Stock Exchange (NYSE) went up the same dayA sample of 78 stocks traded on the NYSE that day showed that 21 went up.You are conducting a study to see if the proportion of stocks that went up is is significantly less than 0.3. You use asignificance level of a 0.001.What is the test statistic for this sample? (Report answer accurate to three decimal places.test statisticWhat is the p-value for this sample? (Report answer accurate to four decimal places.)19p-value =The p-value is..less than (or equal to) ogreater than aThis test statistic leads to a decision to...reject the nul1a

Given Data and calculation is shown below

Answered: Many investors and financial analysts…

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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Do you think statistics is useful in business analysis? Discuss in not more than 150 words
In July 2019, a study reported that 63% of Americans use Instagram daily. An SRS of 15 PCC students are asked "Did you use Instagram today?" What is the mean of X? Write your answer to the nearest hundredth (2 decimal places).
data from the office for national Statistics show that the mean age at which men in greatbritain get married is 30.8 years (the Guardian, february 15, 2013). a news reporternoted that this represents a continuation of the trend of waiting until a later age to wed.a new sample of 47 recently wed british men provided their age at the time of marriage.these data are contained in the datafile britainMarriages. do these data indicate that themean age of british men at the time of marriage exceeds the mean age in 2013? test thishypothesis at a = .05. what is your conclusion?.
A Pew Research Center report published on February 2, 2022 says, “In a national survey by Pew Research Center, 54% of U.S. adults say they have a favorable opinion of the Supreme Court while 44% have an unfavorable view, and 84% say justices should not bring their political views into decisions.” Answer the given problems based on the assumption that the above figures represent the true proportion of current U.S. people’s opinion. 4.1. If 20 U.S. adults are selected at random, what is the probability that less than half the selected people have favorable view on U.S. Supreme Court? 4.2. If 20 U.S. adults are selected at random, what is the probability that more than half the selected people have unfavorable view on U.S. Supreme Court? 4.3. If 5,128 U.S. adults were interviewed, what are the expected value of the number of people that answered that the justices should not bring their political views into decisions? What is the probability standard deviation in this case?
PLEASE DO ALL THE PARTS OF THE QUESTION AS ITS ALL FROM ONE!
Under what circumstances would the trendline be significantly deviated by an outlier?
“The Rule of 40”, a principle according to which software company’s combined “Revenue growth rate” and “Operating margin” should exceed 40%, has gained momentum as a high-level gauge of performance for software businesses. Increasingly, executives are embracing “the Rule of 40” as an important metric for building company’s valuation. To investigate the relationship between the company’s fulfilment of the “Rule of 40” and the company’s market capitalization, quarterly data was gathered for a software company (Ansys) in Worksheet 1. Worksheet 1 Quarter ended date Rule of 40 (Revenue + Op Income, $M) Market Capitalization, $M Mar-03 $125 $424 Jun-03 $132 $514 Sep-03 $143 $597 Dec-03 $153 $596 Mar-04 $163 $581 Jun-04 $170 $666 Sep-04 $175 $957 Dec-04 $184 $1 073 Mar-05 $194 $1 091 Jun-05 $203 $1 196 Sep-05 $213 $1 341 Dec-05 $221 $1 567 Mar-06 $235 $2 177 Jun-06 $277 $1 915 Sep-06 $329 $1 956 Dec-06 $391 $1 976 Mar-07 $453 $2 120 Jun-07 $491…
Twelve percent of the world's population is left-handed. A researcher claims that left-handed individuals are more creative than those who aren't left-handed. In order to support his claim, he takes a sample of 1650 artists and finds that 14% of.them are left-handed. Español Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, where p is the proportion of left-handed individuals in a random sample of 1650. 00 (b) Find the standard deviation of p. (c) Compute an approximation for P (p s0.14), which is the probability that there will be 14% or fewer left-handed people in a random sample of 1650. Round your answer to four decimal places. Save For Later Submit Assignment Check Terms of Use Privacy Center Accessibility acer esc backspa
Solve and DRAW the corresponding graph. Asap please
Suppose that a recent article by a historian stated that the mean time spent in jail by a first–timeconvicted burglar in the 20th century was 2.5 years. A study was then done to see if the mean time has increasedin the new century. A random sample of 26 first-time convicted burglars in a recent year was picked. The meanlength of time in jail from the survey was 3 years. Suppose that it is somehow known that the population standarddeviation is 1.8 years and that the population is normally distributed.The hypotheses can then be framed as:H0 : μ = 2.5 vs. Ha : μ > 2.5(a) Which of the following figures (next page) best describes the p-value for this hypothesis testingproblem. Explain your reasoning. (numbers above red shaded area represent the corresponding probabilities). (b) Write the decision and conclusion for this hypothesis testing problem if the significance level, α,is 0.1.
(b) Does this study provide evidence that cash incen- tives cause an increase in the proportion of 5s on the AP statistics exam? Explain your answer.
According to the New York Daily News, March 5, 2014, people 65 years and older watch an average of 50.5 hours of TV per week. We will estimate the standard deviation to be 12.7 hours per week. Your town has many social programs for senior citizens which may reduce the amount of TV that older people watch. You want to find out if it is true that people 65 and older in your town watch less than 50.5 hours of TV per week. So, you sample 40 people 65 and older in your town. You find that the average time that the 40 people watch per week is 45.8 hours. Can the claim be supported to a level of significance of α = .02, test the hypothesis?

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