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- Thread starter OakMoon!
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Are you struggling to understand the rule or having issues applying it to questions?i need help in cosine rule

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Having issues finding your reply between all the ads xDAre you struggling to understand the rule or having issues applying it to questions?

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That was not in the options! 😜Having issues finding your reply between all the ads xD

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Can you please provide an example question?I have a doubt. How do you know when to use what in the Further Stat questions??? Esp. hypothesis-testing!

For example :Can you please provide an example question?

A college careers officer investigates the income at age 24 of a group of students who left school at 16, and a group who stayed on to take their A-Levels.

The results he finds are summarized in the table.

16-year-old leavers | A-Level leavers | |

Mean | 156 | 164 |

Sample estimate of variance | 673 | 593 |

Sample size | 37 | 28 |

Show, using a 2-sample t-test, that the hypothesis that those staying on at school have higher incomes at age 24 is rejected, on the evidence of this sample.

can someone please help with this...?For example :

A college careers officer investigates the income at age 24 of a group of students who left school at 16, and a group who stayed on to take their A-Levels.

The results he finds are summarized in the table.

Show, using a 2-sample t-test, that the hypothesis that those staying on at school have higher incomes at age 24 is rejected, on the evidence of this sample.

16-year-old leavers A-Level leavers Mean 156 164 Sample estimate of variance 673 593 Sample size 37 28

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To test the hypothesis, we generally need to find theFor example :

A college careers officer investigates the income at age 24 of a group of students who left school at 16, and a group who stayed on to take their A-Levels.

The results he finds are summarized in the table.

Show, using a 2-sample t-test, that the hypothesis that those staying on at school have higher incomes at age 24 is rejected, on the evidence of this sample.

16-year-old leavers A-Level leavers Mean 156 164 Sample estimate of variance 673 593 Sample size 37 28

If \(p>0.05\), this means that the mean values have no difference and the hypothesis is rejected.

Substituting your values in this online calculator, we get \(z=-1.275\) and \(p=0.1036\) and since \(p\) is greater than \(0.05\), we can say the hypothesis is rejected.

To test the hypothesis, we generally need to find thez-scorealso known asTest Statisticand then use it to find thep-value.

If \(p>0.05\), this means that the mean values have no difference and the hypothesis is rejected.

Substituting your values in this online calculator, we get \(z=-1.275\) and \(p=0.1036\) and since \(p\) is greater than \(0.05\), we can say the hypothesis is rejected.

P.S. I am not 100% sure about this so please take this with a grain of salt.

Thank you soo much! That's exactly what the marking scheme says so you are perfectly correct! Cheers!

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Practicing gets really boring for me. Most of the topics in my syllabus are ones I've done before, but need to (ugh)... practice.

It's too time consuming, and with other exams in the way, I have no idea how I'm going to cover the material. Any advice, guys?

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Did you find this ebook of Audrey Simpsons ? I also want the same !!Can anyone please upload pdf of these math books which are updated for the 2016 year onwards? Thankyouu

Cambridge O Level Mathematics Coursebook by Audrey Simpson

Cambridge O Level Mathematics

Heather West, Jean Matthews, John Jeskins, Mike Handbury

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Plz help Cambridge olevel Maths book by Aurdrey Simpson need plz

hi, do any one have this book? I also need this. please help m.Can anyone please upload pdf of these math books which are updated for the 2016 year onwards? Thankyouu

Cambridge O Level Mathematics Coursebook by Audrey Simpson

Cambridge O Level Mathematics

Heather West, Jean Matthews, John Jeskins, Mike Handbury

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Dear ALL, Anybody has the pdf of " New Additional Mathematics ". Will appreciate it

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Thanks in Advance

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Second year taking additional math, covered half the syllabus, asking for any important tips before the examAfter the initiative taken by Math_angel in the IGCSE section, I have made this topic for students of O'levels. You can post any question or any problem here and me along with other XPF users will try to help you as soon as possible. This topic is a feasible option as it won't bring a hassle of making new topics for every question and it will also allow the helpers to not miss any of your questions and have one common topic for answering your Mathematics queries.

So start posting your problems.

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Hi, everyone can any of you help me to find the softcopy of cambridge worked solutions manual for probability & statistics 1 ISBN-978-1-108-61309-5. and. Worked solutions manual for probability & statistics 2 ISBN-978-1-108-40734-2.

I need it to teach my son. Thank you in advance.

I need it to teach my son. Thank you in advance.