24 is the number of white cars so if 12 of the cars are blue, you just subtract 12 from 24 giving you 12 as the difference between white and blue cars

8 0

3 years ago

A physician wants to develop criteria for determining whether a patient's pulse rate is atypical, and she wants to determine whe

valkas [14]

Answer:

a) 66.1 < μ < 82.7

b) 71.9 < μ < 97.7

c) D. No, because the two confidence intervals overlap, we cannot conclude that the two population means are different.

Step-by-step explanation:

Confidence interval is given by the formula

M±t×( $\frac{s}{\sqrt{N} }$ ) where

M is the sample mean
t is the corresponding t value for 95 confidence level
s is the sample standard deviation
N is the sample size

a. Construct a 95% confidence interval estimate of the mean pulse rate for males.

For men:

M=74.4 t=2.262 s=11.6207 N=10 then confidence interval is:

74.4±2.262×( $\frac{11.6207}{\sqrt{10 } }$ ) ≈ 74.4±8.3

b. Construct a 95% confidence interval estimate of the mean pulse rate for females.

For women:

M=84.8 t=2.262 s=18.0488 N=10 then confidence interval is:

84.8±2.262×( $\frac{18.0488 }{\sqrt{10 } }$ ) ≈ 84.8±12.9

c. Compare the preceding results. Can we conclude that the population means for males and females are different?

Difference of Population means for males and females are not statistically significant, since confidence intervals overlap.

4 0

3 years ago