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Column Ohe how of the table. phones (in thousand forints)_ much manufacturer Explain Prepare - the money the mobile h Hl makes TH have research in the righthand s...

Question

Column Ohe how of the table. phones (in thousand forints)_ much manufacturer Explain Prepare - the money the mobile h Hl makes TH have research in the righthand spent isasuodxa for order tfed nSeniber Ji

column Ohe how of the table. phones (in thousand forints)_ much manufacturer Explain Prepare - the money the mobile h Hl makes TH have research in the righthand spent isasuodxa for order tfed nSeniber Ji



Answers

Use the table that lists the weights (in ounces) and operating times (in minutes) for 10 cellular telephones. $$\begin{array}{|c|c|}\hline \text { Wompor } & \text { Caresesum } \\\hline 8.8 & 140 \\\hline 7.7 & 80 \\\hline 4.8 & 90 \\\hline 7.0 & 90 \\\hline 7.1 & 90 \\\hline 8.4 & 70 \\\hline 3.8 & 60 \\\hline 3.6 & 260 \\\hline 6.7 & 75 \\\hline 6.2 & 135 \\\hline\end{array}$$ Make a stem-and-leaf plot to order the weights of the phones.

A seven leaf plot for the operating times of the phones. Two columns. You're stems. We have data in the sixties, in the seventies, eighties nineties, and then in the hundreds, we're gonna have to be a little bit more specific. We have 100 thirties, 100 forties, and then we also have in the two sixties. So our first data for the 60 will put a leaf of zero. That means 60 and then for 70 will put at least zebra 80 a leaf of zero. Now you have three nineties, so you put three zeros and all. Ours has 75. So I need a leave of five in the seven stem, and then we have 1 35. So I'm gonna put a five there 1 40 and to 60. And you could put a little key on the side. That says six slash zero means

Okay, so hello. So to use the um slope formula, we're going to need to ordered pairs. So we see in our chart at the in the year 2008, the number of subscribers was 270,000, And in 2013 it was 335, 654,000 it in thousands. Um So we have to ordered pairs. Um here we see them, right? And for slope we just slope just says we take change and why divided by change in X. So Y tu minus Y. One is just the change and why and then divided by the change in X. So um we can use this now to find our slope. Um So our slope is going to be while we take change and why? So it's gonna be 335,000 uh 650 to minus 270,000 334. And then divide that By uh 2013 -2008. Okay, so that gives us uh 65,318 divided by five. Which um comes out to 13,000, uh 63.6. So approximately 13,063. Um And again, this is so again, it's the average rate of change. Um And this again is in thousands per year. True. All right.

All right, so we have the following information. The market shares off the smart phone companies for Apple as a 30% Mark Suri Samsung. That's a dirty present market share. Sony 4% H two C five presents at a little 5% and Ogi 10%. So the question is asking us to find the the H H I index and the judge eyes just squaring the percentage of the market share for each company and basically adding all that up. So it is actually the some. So, for example, for Apple and Samsung at 38 that's gonna be 38 square. That's 14 44 Sony Foursquare each TC, Vice word and LG 10 scored 100. So we square all of these percentages up, and then we add them all up. That's going to give us an index of 30 54 which is pretty high. Um, so what is the structure of the smartphone industry? Most likely is an oligopoly, especially looking at the fact that you saw me too. Companies that have a that take over, like 76% of the market share combine. It's the H I V is higher than 2500 which indicates that it's a very uncompetitive

So for this problem were given that after the increase in all three years, total number of phone stuffed is 290 million, so we can find out the total number in each year by summing the three predictions given to us for the increase. So if we do this, that would be saying to X minus 21 plus five halves X plus two plus three expose 24 that should give us 2290 million. We can use that to sell for X and then plug it into our increase to find out what the number per year should be. So, combining like terms here we have a 24 into two is 26 but a minus 21 is going to be a positive five. And then we have a to a 2.5 and a three drug of a 7.5 acts, and that's he put a 290. You want to subtract the five from both sides? Do you give that 7.5 x is equal to 85 and then from here we want to multiply artery divide by 7.5 from both sides to get X as by itself and the smoky of them. Fax is equal to 200. Sorry that X equals 38. So now that we know what X is equal to the complied into the three years comp with the total amount of phones. So in the case the first year we have two x minus 21. What? That would be two times 30 or 76 minus 21 which is 55. So there would be a increase of 55 cell phones for that year for 2000 12 were given five halves expose to and five halves times 30 eights is equal in 95 95 plus two would be 97 phones and then finally were given three X Plus 24 which would be 38 times three plus 24 which is 138. I notice that only add the's three numbers together. We do indeed get back to 90. So our answer to the three years will be 55 97 1 38


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