BASIC PRACTICE OF STATS-LL W/SAPLINGPLU
8th Edition
ISBN: 9781319216245
Author: Moore
Publisher: MAC HIGHER
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Chapter 19, Problem 19.44TY
To determine
To find: The
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A survey of
250250
young professionals found that
two dash thirdstwo-thirds
of them use their cell phones primarily for e-mail. Can you conclude statistically that the population proportion who use cell phones primarily for e-mail is less than
0.720.72?
Use a 95% confidence interval.
Question content area bottom
Part 1
The 95% confidence interval is
left bracket nothing comma nothing right bracket0.60820.6082, 0.72510.7251.
As
0.720.72
is
within the limits
of the confidence interval, we
cannot
conclude that the population proportion is less than
0.720.72.
(Use ascending order. Round to four decimal places as needed.)
I need help with this problem and an explanation of the solution for the image described below. (Statistics: Engineering Probabilities)
A survey of 250 young professionals found that two-thirds of them use their cell phones primarily for e-mail. Can you conclude statistically that the population proportion who use cell phones primarily for e-mail is less than 0.72? Use a 95% confidence interval.
Question content area bottom
Part 1
The 95% confidence interval is [ ], [ ] As 0.72
is
▼
above the upper limit
within the limits
below the lower limit
of the confidence interval, we
▼
can
cannot
conclude that the population proportion is less than 0.72.
(Use ascending order. Round to four decimal places as needed.)
Chapter 19 Solutions
BASIC PRACTICE OF STATS-LL W/SAPLINGPLU
Ch. 19 - Prob. 19.1TYCh. 19 - Prob. 19.2TYCh. 19 - Prob. 19.3TYCh. 19 - Prob. 19.4TYCh. 19 - Prob. 19.5TYCh. 19 - Prob. 19.6TYCh. 19 - Prob. 19.7TYCh. 19 - Prob. 19.8TYCh. 19 - Prob. 19.9TYCh. 19 - Prob. 19.10TY
Ch. 19 - Prob. 19.11TYCh. 19 - Prob. 19.12TYCh. 19 - Prob. 19.13TYCh. 19 - Prob. 19.14TYCh. 19 - Prob. 19.15TYCh. 19 - Prob. 19.16TYCh. 19 - Prob. 19.17TYCh. 19 - Prob. 19.18TYCh. 19 - Prob. 19.19TYCh. 19 - Prob. 19.20TYCh. 19 - Prob. 19.21TYCh. 19 - Prob. 19.22TYCh. 19 - Prob. 19.23TYCh. 19 - Prob. 19.24TYCh. 19 - Prob. 19.25TYCh. 19 - Prob. 19.26TYCh. 19 - Prob. 19.27TYCh. 19 - Prob. 19.28TYCh. 19 - Prob. 19.29TYCh. 19 - Prob. 19.30TYCh. 19 - Prob. 19.31TYCh. 19 - Prob. 19.32TYCh. 19 - Prob. 19.33TYCh. 19 - Prob. 19.34TYCh. 19 - Prob. 19.35TYCh. 19 - Prob. 19.36TYCh. 19 - Prob. 19.37TYCh. 19 - Prob. 19.38TYCh. 19 - Prob. 19.39TYCh. 19 - Prob. 19.40TYCh. 19 - Prob. 19.41TYCh. 19 - Prob. 19.42TYCh. 19 - Prob. 19.43TYCh. 19 - Prob. 19.44TYCh. 19 - Prob. 19.45TYCh. 19 - Prob. 19.46TYCh. 19 - Prob. 19.47TYCh. 19 - Prob. 19.48TYCh. 19 - Prob. 19.49TYCh. 19 - Prob. 19.50SECh. 19 - Prob. 19.51SECh. 19 - Prob. 19.52SECh. 19 - Prob. 19.53SECh. 19 - Prob. 19.55SECh. 19 - Prob. 19.56SECh. 19 - Prob. 19.57SECh. 19 - Prob. 19.58SECh. 19 - Prob. 19.59SECh. 19 - Prob. 19.60SECh. 19 - Prob. 19.61SECh. 19 - Prob. 19.62SECh. 19 - Prob. 19.63SECh. 19 - Prob. 19.64SECh. 19 - Prob. 19.65SE
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