Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 72 stocks traded on the NYSE that day showed that 12 went up. You are conducting a study to see if the proportion of stocks that went up is significantly less than 0.3. You use a significance level of a = 0.005. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null

A laptop manufacturer claims that the mean life of the battery for a certain model of laptop is more than 5 hours. What is the claim as a mathematical statement

Consider the following data from a stock table on the company "Apple Inc."     Name Apple Inc.     Symbol APPL     Close $148.96     Day Range $146.76−$148.98     52-week Range $89.47−$148.98     Volume 27,327,725     P/E 17.88     Dividend $2.52     EPS $?     Calculate the earnings per share.

Suppose that the value of a stock varies each day from $10.82 to $32.17 with a uniform distribution. Find the third quartile; 75% of all days the stock is below what value? (Enter your answer to the nearest cent.)

2021 2020 2019 2018 2017 Sales $ 497,289 $ 327, 164 $ 267,073 $ 197, 102 $ 141,800 Cost of goods sold 251,145 165, 182 137, 037 99,651 70,900 Accounts receivable 23,969 19, 172 18,214 11,511 9,699 Compute trend percents for the above accounts, using 2017 as the base year.

The data below is from https://www.worldometers.info/world-population/mexico-population/   Year Population of Mexico 2020 128,932,753 2019 127,575,529 2018 126,190,788 2017 124,777,324 2016 123,333,376 2015 121,858,258 2010 114,092,963 2005 106,005,203 2000 98,899,845 1995 91,663,285 1990 83,943,132 1985 75,983,485 1980 67,761,372 1975 59,607,953 1970 51,493,565 1965 44,123,853 1960 37,771,859 1955 32,350,596 1.. Show how you can verify that your linear model works for this data. (Keep trying until it works, and then come back and prove that it works here.) 2. Use your linear model to predict the population in 2050. Show work, sentence answer. 3. Explain whether you think a linear model is a reasonable approximation. Give specific reasons for your answer.

Suppose that the value of a stock varies each day from $8.82 to $16.17 with a uniform distribution. Find the third quartile; 75% of all days the stock is below what value?

In a survey of over 2000 U.S. teenagers by Harris Interactive, 47% said that "their social life would end or be worsened without their cell phone." One survey question asked the teens how important it is for their phone to have certain features. The following figure displays data on the percent who indicated that a particular feature is vital.a. Explain how the graph gives a misleading impression.b. Would it be appropriate to make a pie chart to display these data? Why or why not?

13. Does the following have a positive, negative, or neutral trend?

The following are the annual salaries of 15 chief executive officers of major companies. (The salaries are written in thousands of dollars.) 767, 181, 75, 743, 452, 271, 472, 542, 814, 586, 405, 134, 1108, 723, 519 Send data to calculator Find 10" and 75" percentiles for these salaries. (If necessary, consult a list of formulas.) (a) The 10th percentile: thousand dollars (b) The 75th percentile: thousand dollars