7.2 #9- please show step by step on how to approach this question as simple as possible.  (if possibel using a ti84+ calculator.   Refer to the accompanying data set and construct a 90​% confidence interval estimate of the mean pulse rate of adult​ females; then do the same for adult males. Compare the results. Both samples have sample size of 40    Males  Females    86  74 77,85   52 62 92,79   54  65 57,72   51 78 67, 73   53,61 54, 85   72, 61 81,92   61, 77 78,87   81,65 87,87   68,93 87,89   41,86, 54, 95   69,62 38,66   72, 74 63,88   52, 63 82,80   57, 78 73,78   75, 63 80,75   62,96 62,57   59, 65 64,102   58, 57 78,74   69, 71 59,76   86, 60, 63,77

Please answer questions 1, 2 & 3 . Thank you!

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

Step 2 (b) Which of the two intervals conveys more precise information about the value of the population proportion? Recall that a smaller standard error of results in a narrower confidence interval. A narrower confidence interval is then more precise. The width of Interval 1, (0.27, 0.35), is 0.35 0.27 = and the width of Interval 2, (0.30, 0.34), is 0.34 -0.30 = Submit Skip (you cannot come back) Therefore, --Select--- is the narrower and more precise interval.