WEBVTT
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All right, That's the question. 1 83 So
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in this question, our simple size and IHS 50
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are a We moved to the question part So part
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A what is a no hypothesis? So here the
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now hypothesis iss the population mean the population mean is
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100. And if we use me to represent the
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population means so our no hypothesis is going to be
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your equivalent to say, um us Equal Teoh 100
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. All right, Part B, what is the
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alternative hypothesis? So here we can say the population
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means is not 100 or we just say mu does
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not equal to 100 note. Here it is a
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not be close eye. So when we considering the
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peat p value winning to consider two tails together,
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just keep in mind. All right, heart,
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see what's value for Alfa here in the question it
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is stating that using a airplane there a one level
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of significance. So that means our Alfa is going
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to be there a point there or what? All
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right, um, de what is a hypothesized,
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uh, value from you? So has wasted in
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the part a, um in the no hypothesis,
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our hypothesized highly valuable for me was going to be
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100. Okay, part A what? Ihsaa value
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for ex parte um, export. Here it ISS
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represents the Sam Pony, and it is given in
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a question. On the better is 96. All
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right, heart f What is a standard deviation?
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They're here. Siegel eyes representing the standard deviation TV's
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. Okay. And, uh, and as equal
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to 12 partying siga off export. Here it is
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representing the standard arrow center era off. I mean
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and by the formula Friends, it is equal to
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speak on Monday, but Abay Square showed up in
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, so it's going to be 12 over square.
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Oh, no. 50. It is equal to
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1.7 Terrible. All right. And we moved to
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h. We're interested in the testes. Statistic is
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that star. So we need to do some calculation
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here. According to the former learns that that start
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is equal to x bar minus the hypothesized value over
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mu over Segolela divided by square enough. And so
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we just plug in numbers. We have 96 minus
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100 divided by 12 over Square Rudo 50 and it
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is equal. Teoh Negative 2.36 All right, what
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is the What is a P value here? The
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P value is going to be the probability off a
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random bearable that which absolute value is greater than or
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equal to the absolute value of ours that start Or
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, in another words, it issue. Go to
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the probability off a stunner. Normal, um,
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random bearable. That which ISS smaller than or equal
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to negative 2.36 So this is our of value for
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its that star. Plus the probability off is that
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greater than our equal? Teoh? Positive 2.36 All
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right, if we draw occur, representing the center
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normal distribution in here and it is going to be
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negative. Teoh calling 36 and symmetrical way Here it
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is. Positive 2.36 So our Peabody, who is
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going to be the summation off the area for this
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Tau and the sheriff of this tale as well?
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The ended up and equal Teoh the P value.
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So this, um, south is equal. Teoh
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Narrow point narrow 18 All right, Pant heart J
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wants a physician. So we were going to compare
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p value with our level of significance with the Alfa
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I recall Alfa is U Boat Teoh. There a
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point there. What? And hear? The P
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value is equal to their opined there. 018 And
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obviously our people I always greater than Alfa So here
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we are fell Teoh reject the null hypothesis.