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43. Assume that the p -value -0.0573 for this question. Based on this p-value, what is an appropriate conclusion in context of this question? (a) We reject Ho and conclude that there insufficient evidence that the average lifespan is significantly less than the manufacturer's claim. (b) We reject Ho and conclude that there sufficient evidence that the average lifespan is significantly less than the manufacturer's clan (e) We fail to reject Ho and conclude that there is insufficient evidence that the average lifespan is significantly less than the manufacturer's claim. (d) The test is inconclusive. 14. In a recent study conducted in South African, researchers found that in a sample of 2 000 people, 777 are employed. Assuming that this was a simple random sample from the population of all South Africa, which of the following are true: (a) The confidence interval for the proportion with a level of significance of 5% is narrower than the confidence interval with a level of significance of 10% (b) 777/2000 is a population parameter representing the exact proportion of South Africans employed. (c) Increasing, the sample size while keeping everything else constant will make the confidence interval wider. (d) The confidence interval for the proportion with a level of significance of 10% is narrower than the confidence interval with a level of significance of 5%. 45. A hawker collects data on the number of pineapple sales made each day and the average temperature of that day. She computes a regression line for predicting the number of sales, y, based on how hot or cold it was that day, in degrees, and finds that y - 0.22 + 1.8r. The "slope" of this least regression line is?" (a) Can't tell as the raw data is needed. (b) 0.22. (c) 1.8. (d) Room temperature