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hello dears, please answer me these questions State whether the following statements are True or False . (6 marks, 1 Mark each) The hypothesis that
hello dears, please answer me these questions
State whether the following statements are True or False. (6 marks, 1 Mark each)
- The hypothesis that an analyst is trying to prove is called the alternative hypothesis.
- One-way ANOVA is used when analyzing the difference between more than two population means.
- Ifr= 0.9, thenr2= 0.81, which means that 19% of the total variation inyremains unexplained.
- The chi-square goodness-of-fit test cannot be used to test for normality.
- Ifxandyhave a strong positive linear correlation,ris close to 0.
- A test of independence CHI-SQUARE tests the null hypothesis that in a contingency table, the row and column variables are independent.
Section-II
Multiple choice questions. (6 marks, 1 Mark Each)
- Which of the following is true of the null and alternative hypotheses?
- Exactly one hypothesis must be true
- both hypotheses must be true
- It is possible for both hypotheses to be true
- It is possible for neither hypothesisto be true
- The form of the alternative hypothesis can be:
- one-tailed
- two-tailed
- neither one nortwo-tailed
- one or two-tailed
- The value set for is known as:
- the rejection level
- the acceptance level
- the significance level
- the error in the hypothesis test
- The ANOVA test is based on which assumptions?
- the sample are randomly selected
- the population variances are all equal to some common variance
- the populations are normally distributed
- the populations are statistically significant
- All of the above
- II and III only
- I, II, and III only
- I, and III only
- The variance within samples (S2p) for the variances 4, 2, and 6 is equal to:
- 4
- 5
- 6
- None
- A regression between foot length (response variable in cm) and height (explanatory variable in inches) for 33 students resulted in the following regression equation: y = 10.9 + 0.23 x. One student in the sample was 73 inches tall then the predicted foot length for this student is.
- 17.57 cm
- 27.69 cm
- 29 cm
- 33 cm
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