Mark the following statements as true or false. If it is false, explain why and

Question

Mark the following statements as true or false. If it is false, explain why and what needs to be changed to meke the statement true.

1. The alternative hypothesis is true if you reject the null hypothesis.

2.If 2 variables are not linearly correlated, then they are independent.

3.If the slope for a regression model is significant, then we can conclude the dependent variable causes the independent variable.

4.If a variable is normally distributed with mean 100 and standard deviation 15, then approximately 50% of scores are between 75 and 125.

5.If we reject the null hypothesis when conducting an ANOVA we conclude that the groups have different means.

6.the odds ratio and relative risk are similar when the prevalence is small.

7.A cross sectional study may be used to generate hypothesis for possible cohort studies.

8. A pie chart may be used to exaamine relationships between variables.

10. If the p-value for a hypothesis test is less than 0.05, we reject the null hypothesis.

Explanation / Answer

1. The alternative hypothesis is true if you reject the null hypothesis.True

2.If 2 variables are not linearly correlated, then they are independent.False, they are alwaus corelated the relationship may be strong of weak

3.If the slope for a regression model is significant, then we can conclude the dependent variable causes the independent variable.False, independent causes the dependent variable

4.If a variable is normally distributed with mean 100 and standard deviation 15, then approximately 50% of scores are between 75 and 125.False , 90% of scores are between 75 and 125

PS: We are directed to solve only first 4 parts of a question if multi part question is posted

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