Question

Refer to the accompanying data set and construct a 95% confidence interval estimate o the mean pulse rate of adult females; then do the same or adult mae Click the icon to view the pulse rates for adult females and adult males the results 1 Pulse Rates Construct a 95% confidence interval of the mean pulse rate for adult females bpm bpm (Round to one decimal place as needed.) 79 94 84 Construct a 95% confidence interval of the mean pulse rate for adult males 71 85 (Round to one decimal place as needed.) 79 Compare the results 75 71 87 O A. The confidence intervals overlap, so it appears that adult males have a significantly higher mean pulse rate than adult females. ○ B. The confidence intervals do not overlap. so it appears that adult females have a significantly higher mean pulse rate than adult males. 87 81 O C. The confidence intervals do not overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult D. The confidence intervals overlap, so it appears that there is no significant difference in mean puse rates between adult females and adult males 74 81 71 Click to select your answer(s) This Question: 10 pts 8 of 18 (14 complete) efer to the accompanying data set and construct a 9 % con de ce inter al estimate of the mean ise rate o females tendo lt male om are the results. a esame or a E Click the icon to view the pulse rates for adult females and adult males Construct a 95% confidence interval of the mean pulse rate for adult females bpmHbpm (Round to one decimal place as needed.) Construct a 95% confidence interval of the mean pulse rate for adult males. bpmbpm (Round to one decimal place as needed.) Compare the results OA. The confidence intervals overlap, so it appears that adult males have a significantly higher mean pulse rate than adult females. O B. The confidence intervals do not overlap, so it appears that adult females have a significantly higher mean pulse rate than adult males. O C e confidence intervals do not overlap, so it appears that there is no significant difference n mean pulse rates between adult females and adult males O D. The confidence intervals overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. Click to select your answer(s)

Answer 1

For adult females,

sample mean

76 . Î

sample standard deviation

13.02

and sample size

a 95% confidence interval of the mean pulse rate for adult females

(7 *to.o25,n-1,T+ V n *to.025,n-1 Vn +m

(76.1-t0,025.39 V40 76.1t0.025,39) V40 * to.025,39, 76.1 +13.02

13.02 13.02 = (76.1 * 2.02269. 76.1+--* 2.02269) V40 V40

(71.9360,80.2640)

For adult males,

sample mean $\bar{x} = 67.3$

sample standard deviation

s 12.56

and sample size

a 95% confidence interval of the mean pulse rate for adult males

(7 *to.o25,n-1,T+ V n *to.025,n-1 Vn +m

712.56 to 025.39, 67.3+ to,025,) V40 (67.312.56 V40

2.02269, 67.312.56 V40 = (67.3 32.02269) 40 * 2.02269. 67.3 +

63.2831, 71.3169)

Conclusion : B. The confidence intervals do not overlap, so it appears that the adult females have a significantly higher pulse rate than adult males.