Question

Need f-e

a large airine wants to estimate r. To accomplish this, the 2) Unoccupied seats on flights cause airtines to lose revenue. Suppose its average number of unoccupied sests per flights over the past yea records of 225 flights are randomly selected, and the number of unoccupied seats is noted for each of the sampled flights. Descriptive statistics for the data are as follows: 11.596 and s 4.103. Give a point estimate for the target parameter u. What symbol should we use to describe this value? a) b) Are the two technical conditions (required for the confidence interval technique for large samples) satisfied? List the two technical conditions, then state "yes" or "no" with brief details of how you know from what you are given in the problem. Technical Condition 1: Technical Condition 2: 173 c) Find the z-score (critical value) for a 90% confidence interval. Please report your z-score accurate to three decimal places d) Use the Confidence Inter alFormula (for large samples) to Setupyourworktobuild a 90% Confidence Interval. Please write the formula, then write it a second time with the values substituted in for the variables 225 Calculate the value of the Margin of Error. Please report the ME accurate to three decimal places. e)

Answer 1

ะ (82-147, su, 253 Go ). c-J would be move navrou wa hu s-l cT rn 6.4 .83.2 2. 516 x 2s L S - (1.146, 12.046 NoTE-