Exercise 3 - Hypotheses You observe that a server attack occurs more rarely on weekends. To test that statistically: a) Formulate an appropriate working hypothesis. b) Formulate the null hypothesis. c) How can you falsify the hypothesis? ,
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A: From the provided information, Level of significance (α) = 0.03 Sample size (n1) = 5 and n2 = 5
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A: The Type II error is nothing but accepting the null hypothesis when it is false.
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Q: If we reject a true null hypothesis, this is what type of error? a. No Error b. Type I Error Type II…
A: Type 1 error : we reject the null hypothesis when its actually true it is a false positive .…
Q: Define the Alternative Hypothesis and give an example.
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A: (a) H0 : ? ≤18 Ha : ? >18
Q: Define the Null Hypothesis and give an example
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A: Given that Population mean μ =18
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A: Before (X) After (Y) D = Y-X (D-dbar)^2 75 73 -2 0 76 72 -4 4 90 92 2 16 92 93 1 9 89 89 0…
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A: The provided information is Worker numbers before After Difference=before-After 1 34 33 1 2…
Q: Consider the null hypothesis Ho: The man is innocent of crime. Ha: The man is guilty of crime. What…
A: here given null and alternate hypothesis Ho: The man is innocent of crime. Ha: The man is guilty of…
Q: Define the Bonferroni Test of a Joint Hypothesis?
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Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample of…
A: Given Information: Hypothesized value (μ0) = 3.6 Sample size (n) = 70 Sample mean (x¯) = 3.4…
Q: The critical region and critical value for a hypothesis test are shown below. The test statistic is…
A: In this case, the test statistic is Z = -1.7 and the critical values are ±1.41.
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A: The claim being assessed in a hypothesis test is called the null hypothesis. And alternative…
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Q: (a) Identify the null hypothesis and alternative hypothesis.
A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…
Q: Failing to reject a false null hypothesis is also called? * O 1-B O 1- a О уре Error О Туре II Error
A: Type II error: Type II error is the accept null hypothesis when it is false. Type I error: Type I…
Q: B. Calculate the P-value. P-value=____ C. What is the conclusion for this hypothesis test?…
A:
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A: Given- Hypothesized Population proportion (p0) = 50% = 0.50
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A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…
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- In the United State court system, the defendant is considered innocent until proven guilty. In our hypothesis testing framework, which term describes the situation that a defendant is actually innocent but gets a guilty verdict? a) power b) Type I error c) correct verdict d) Type II errorIn a hypothesis test the initial assumption is that the alternate hypothesis is true. TRUE OR FALSE?The average American consumes 9.8 liters of alcohol per year. Does the average college student consume less alcohol per year? State your null and alternative hypothesis H0:H0: Ha:Ha:
- A group of divers is exploring an old sunken ship. Suppose the null hypothesis, H0, is: the sunken ship does not contain buried treasure.State the Type I error. a The ship does not contain buried treasure, but the divers think it does. b The ship does not contain buried treasure, and the divers think it does. c The ship does contain buried treasure, but the divers think it does not. d The ship does contain buried treasure, and the divers think it does. State the Type II error. a The ship does not contain buried treasure, but the divers think it does. b The ship does not contain buried treasure, and the divers think it does. c The ship does contain buried treasure, but the divers think it does not. d The ship does contain buried treasure, and the divers think it does.Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A report claims that less than 80% of households in a specific county struggle to afford basic necessities. Does the claim represent the null hypothesis or the alternative hypothesis?Jack claims that his average drive of a golf ball is 275 yards. To prove this Jack hits 30 drives for which data is given below 266 254 248 249 297 279 266 261 293 261 222 212 282 281 265 243 274 253 284 240 272 279 261 273 295 300 295 249 300 298 Identify the Null hypothesis Identify the Alternative hypothesis Using the P value approach identify if the hull hypothesis will be accepted or rejected Interpretation
- Which statement describes a Type II Error? Fail to reject the null hypothesis H0, when H0 is actually true Reject the null hypothesis H0, when H0 is actually true Fail to reject the null hypothesis H0, when H0H0 is false Reject the null hypothesis H0, when H0 is actually false(b)Based on your answer to part (a), which statement below is true? Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. Since the p-value is greater than the level of significance, the null hypothesis is rejected. Since the p-value is greater than the level of significance, the null hypothesis is not rejected.f our null hypothesis is H0: ? = 40, what are the three possiblealternative hypotheses?
- Express the null hypothesis H0 and the alternative hypothesis HA in symbolic form. A cereal company claims that the mean weight of cereal in its packets is less than 14 ozDefine the Alternative Hypothesis and give an example.State whether each hypothesis is null or alternative. 1. Students using i brand A ballpens write better than those using brand B balipens. 2. There is no s gnificant difference between the average consumption of gasoline in carA and the average consurption of gasoline in car B. 3. The proportion of senior high school graduates in a certain school is 10% of the entire population. 4. The average iricome of families per month in a certain town is 38,000 pesos. 5. The proportion of husbands using motorcycles in region 2 is more than 50%. 6. The proportion of patients with lung cancer is higher among smokers than among nonsmokers. 7. The proportion of senior high school students who enrolled in HUMSS strand is not equal to 80%. 8. An airline claims that less than 12% of its entire lost luggage is never found. 9. The proportion of COVID 19 patients who have asymptomatic cases is less than 25%. 10. The propcrtion of students who will use distance learning in the entire population is more than…