Mathematics, 31.08.2020 20:01 cat123ha
The following table shows a data set containing information for 25 of the shadow stocks tracked by the American Association of Individual Investors (aaii. com, February 2002). Shadow stocks are common stocks of smaller companies that are not closely followed by Wall Street analysts. Click on the datafile logo to reference the data. For the Exchange variable, show the "frequency and the percent frequency" for AMEX, NYSE, and OTC.
Frequency & Percent Frequency for each:
AMEX (? ) (? ), NYSE (? ) (? ), OTC ( ? ) ( ? ) Total (? ) (? )
Answers: 2
Mathematics, 21.06.2019 16:40
Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .
Answers: 2
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 22:00
Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b
Answers: 1
The following table shows a data set containing information for 25 of the shadow stocks tracked by t...
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