Statistics homework help.

Please provide excel formulas if needed.

Answer the following: (a) In a hypothesis-testing situation, how do you know when to perform a \"left-tailed," \"right-tailed,\" or \"two-tailed\" test? The null hypothesis is a claim that the value of a population parameter is equal to some chosen value. This statement is assumed to be true unless we nd sample evidence that indicates it is not. The alternative hypothesis is a statement or claim we are trying to find evidence to support. (b) Decide if each statement is true or false. If false, explain why. i. When we reject a null hypothesis, we have proven the alternative hypothesis to be true. ii. To determine if the data disagree "sufciently" with the null hypothesis to draw a conclusion to a hypotheis test, you have learned two methods: rejection regions and p-values. (Multiple Choice) A statistical hypothesis test is used to test a claim. On a left-tailed hypothesis test with a 1.750686071 critical value, the collected sample's test statistic is calculated to be 1.8924761 1. Which of the following is the correct decision statement for the test? A. Claim the null hypothesis is false B. Claim the alternative hypothesis is false C. Fail to reject the null hypothesis D. Reject the null hypothesis (Multiple Choice) A hypothesis test is used to test a claim. A P-value of 0.011395 is calculated on the hypothesis test with a signicance level set at 0.01. Which of the following is the correct decision statement for the test? A. Claim the null hypothesis is false B. Claim the alternative hypothesis is true C. Fail to reject the null hypothesis D. Reject the null hypothesis