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Sinneinspoclord and nonoroctored [est. Ihe resuts TLsnintraiie Assue Inat the MO sampes a1 Indpedent aaTp4 rntr samoes selecledliom notnalk dxnnme nonanons no ZSSUT...

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Sinneinspoclord and nonoroctored [est. Ihe resuts TLsnintraiie Assue Inat the MO sampes a1 Indpedent aaTp4 rntr samoes selecledliom notnalk dxnnme nonanons no ZSSUT & mal u pepuation stdard drviaton an cnI Corplee pats heloyPrectone naomcion788362Use 4 U-Us signficane lere Iest the claim that students Lakiltg torproc oted lests get 4 hgher mean sco [hun those Iaking portored lesbs Whai are Iha nullant Aelecnaana hypxthises?Vi=i1b Hi' Vz Hi" Mi < M}M >M;C CHo" |i *441 AeW

Sinneins poclord and nonoroctored [est. Ihe resuts TLsnintraiie Assue Inat the MO sampes a1 Indpedent aaTp4 rntr samoes selecledliom notnalk dxnnme nonanons no ZSSUT & mal u pepuation stdard drviaton an cnI Corplee pats heloy Prectone naomcion 7 88362 Use 4 U-Us signficane lere Iest the claim that students Lakiltg torproc oted lests get 4 hgher mean sco [hun those Iaking portored lesbs Whai are Iha nullant Aelecnaana hypxthises? Vi=i 1b Hi' Vz Hi" Mi < M} M >M; C C Ho" |i *441 AeW <M V*01 Hi:01#1z Wnor Eans Mnourd Ia Iu dcina Olace? neadad '



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SCHOOL ENROLLMENT The table shows the number of students (in millions) enrolled in school in the United States by age. Make a table showing the total number of students enrolled for each given year. $$ \begin{array}{|c|c|c|c|c|c|} \hline \text { Age } & {1980} & {1985} & {1990} & {1995} & {2000} \\ \hline 14-15 \text { years old } & {7282} & {7362} & {6555} & {7651} & {8100} \\ \hline 16-17 \text { years old } & {7129} & {6654} & {6098} & {6997} & {7600} \\ \hline 18-19 \text { years old } & {3788} & {3716} & {4044} & {4274} & {4800} \\ \hline \end{array} $$

In this question were being asked to continue from our last problem, where we found the total number of students for each year. And we're being asked to tell which year had the least number of students. And then we're also being asked to find out which one had the greatest. So we need to find the number with the least amount or the year with the least number of students. So we want to look, I would just jump straight to the 10 thousands or into the thousands column because everything is, um, has at least 10,000. So we want to find the smallest number I have. 18,000, 17,000, 16,000, 18,000 and 20,016 is the smallest of those numbers. So the year that had the least number of students is 1990. Then we want to find the year with the greatest number of students. So again, looking at those numbers, we know that this one's out. Um, we have 18,000, 17,000, 18,000 and 20,000. So the year with the greatest number of students is the year 2000

In this problem, using the persons as probabilities, we have to find the probability that the student applied to know colleges probability debt the student applied to know colleges is probability of X equal to zero. In the given table. We can see that for no colleges, no probability is a sound, and so the probability that the student applied to know colleges is equal to zero, which is our required answer.

In this problem, using the persons as probabilities, we have to find the probability that the student applied to fewer than for colleges. The probability that the student applied to fewer than four colleges is equal to probably tee off X less than four. This is equal to probability That the students applied to one college plus Probability that the student applied to two or 3 colleges. Mm Because fewer than four colleges mean I did one college Or two or 3 colleges. This is equal to Probability that the student applied to one college, 0.10. So this is equal to zero one. Tzeitel plus Probability that the student applied to two or 3 colleges is 0.18, So 0.10 plus 0.18. This is equal to zero point do it. So the probability that the students applied to fewer than four colleges is 0.28.

In this problem, using the person's X. Probabilities, we have to find the probability that the students applied to more than three colleges, Probability that the students applied to more than three colleges. Yes, probability off X. Mhm Greater than three. This is equal to probably be off 4-6 colleges, blessed probability off mm seven or more colleges. Because more than three colleges means either 4-6 colleges Or seven or more colleges. This is equal to Probability debt the student applied 4-6 colleges is 0.37. So 0.37 plus Probability that the student applied to seven or more colleges is 0.35. So 0.35, 0.37 plus 0.35 is equal to 0.72. So the probability that the student applied to more than three colleges is 0.72.


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