Question

(3 pt.) 5. Listed below are the ages of randomly selected race car driver confidence interval estimate of the mean age of all race car drivers. normally distributed. cted race car drivers. Construct a 98% face car drivers. Assume that this data is 32 32 33 33 41 29 38 32 33 23 27 45 52 29 25

please break down the problem

Answer 1

gebone at solving the problem we discuss the theoritical approach ab this problem. Here we see that poperlation voordance is unknown, Sample size n=15 (30 so sample variance (s) is used to estimate the son In this situation we can take: test statistic as t= x M on threes we take two constant t = -1,2% t2 = tmus, alz C. I ob . to construct cuch that als PF fimu), asz? Kenny ois = 1-er. c.1 (-D100 CI - hvala nay, /2. 30 Pami), 4/23/h & -se tn 1, 0 / 5 / -ra. Plor, a CH C X 4 ta alta

so when o when vorhance au is unlenown then td) / 100% I for i isto int(n-1), & in x + ((n-1), 9/15 Now we stoort the problem. problem. viven derfa for olivens age. 32 32 33 33 4 1 2938 3,2 33 - 3,; - - 2 matn To tz (14758- 1993.1.47 117758-159. Š8083 s = 767. Id=6.98 at oool 98% c. I bar Mida 733-6-2.98 x 7767, 38.6 +3.98 47-67 | 27 63, 39.50],
please check the calculations.