v . . A health official is interested in estimating the average age of people hospitalized for COVlD-19 in Alberta. He takes a sample of 31 people who are currently in the hospital for COVlD-19 and nds that the average age is 5 = 63.81 years with a sample standard deviation of s = 4.1 years. Assume that the ages of people hospitalized for COVlD19 is normally distributed. Use this information to answer the questions below. a. Compute an 87% confidence interval for ,u, the average age of people hospitalized for COVID-19 in Alberta. Round your answers to at least five decimals if necessary Lower (smaller) bound: ' E years Upper (larger) bound: E years b. Interpret the interval calculated in part a. We are E % confident that the average age of ? 6 hospitalized for COVlD-19 in Alberta is ? 6 the upper and lower bounds of the interval in part a. 0. Instead of the current confidence level of 87%. suppose we were to decrease the confidence level to 85% and use that to compute a new confidence interval. If all other values/quantities stayed the same, how would the width of this new interval compare to the width of the interval computed in part a.? r\". A. The new interval would be the same width A B. The new interval would be wider O c. The new interval would be narrower K\". D. There is not enough information provided to determine how this would affect the interval width d. A similar sample was taken in British Columbia to estimate the average age of people hospitalized for COVlD19 in British Columbia. The 87% confidence interval resulting from this British Columbia sample was (59.56477, 61.83523). Based on this result, what can we say about the average age of people hospitalized for COVlD-19 in Alberta versus the average age of people hospitalized for COVlD-19 in British Columbia? Hint: compare this condence interval with the one you calculated in part a. d. A similar sample was taken in British Columbia to estimate the average age of people hospitalized for COVID-19 in British Columbia. The 87% confidence interval resulting from this British Columbia sample was (59.56477, 61.83523). Based on this result, what can we say about the average age of people hospitalized for COVID-19 in Alberta versus the average age of people hospitalized for COVID-19 in British Columbia? Hint: compare this confidence interval with the one you calculated in part a. A. The average age of people hospitalized for COVID-19 in Alberta is significantly lower than the average age of people hospitalized for COVID-19 in British Columbia B. There is no significant difference in the average age of people hospitalized for COVID-19 in Alberta versus the average age of people hospitalized for COVID-19 in British Columbia C. The average age of people hospitalized for COVID-19 in Alberta is significantly higher than the average age of people hospitalized for COVID-19 in British Columbia preview answers Entered Answer Preview