An independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally distributed with a mean of 630 days and a standard deviation of 125. BIG Corporation claims ? that the standard deviation of its electric bulbs is less than 125. Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis Ho and the alternative hypothesis H₁ that we would use for this test. Ho: O H₁:0 μ

A survey using a sample size of 11 reveals that the average size of dairy farms in Simcoe County is 1500 hectares with a standard deviation of 150 hectares. As a researcher, you take this information and conduct a hypothesis test and find the calculated value of the test statistic is 2.2. Prior to the study, the following hypotheses were established: но: и - 1400 H1: u > 1400 Use a = 0.01. Based on the test statistic and sample size, what the p-value is so we should the null hypothesis. _(0.0262, .0262, 0.026, .026) Given that the p-value is (greater/less) (greater, larger, >, bigger) than a, we should (accept/reject) _ lаccept) the null hypothesis. 0.062, reject ) 0.0131, accept 0.0026, reject ) 0.0262, accept 0.062, accept

A report states that the mean yearly salary offer for students graduating with a degree in accounting is $48,722. Suppose that a random sample of 50 accounting graduates ata large university who received job offers resulted in a mean offer of $49.870 and a standard deviation of $3900, Do the sample data provide strong support for the claim that the mean salary offer for accounting graduates of this university is higher than the national average of $48,722? Ho: = H: p Select an answerY (Put in the correct syimbol and value) P value Based on the above we choose to Select an answer

An oceanographer claims that the mean dive depth of a North Atlantic right whale is 113 meters. You suspect that this claim is not true. In order to refute the oceanographer's claim, you obtain a random sample of 38 dive depths with a mean of 95 meters and a standard deviation of 43.5 meters. State the null and alternative hypotheses of this test. Null Hypothesis (Ho): Alternative Hypothesis (HA): H[? ) To test our hypothesis, we will assume that u = The distribution of sample means follows a ( Select an answer distribution with degrees of freedom. The value of our test statistic is The p-value for this hypothesis test is Report answer accurate to four decimal places. Is the result considered significant at the a = 0.05 level of significance? No. The result is not significant because the p-value is > a. Yes. The result is significant because the p-value is > a. Yes. The result is significant because the p-value is < a. No. The result is not significant because the p-value is < a. We…

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