#22 Ecology: Sand Dunes At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand, and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty wind speed readings gave an average velocity of = 1075 Based on long-term experience, o can be assumed to be 265 cm/sec. (a) Find a 95% confidence interval for the population mean wind speed at this site. (b) Does the confidence interval indicate that the population mean wind speed is such that the sand is always moving at this site? Explain.
#22 Ecology: Sand Dunes At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand, and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and moving sand determines the shape and location of large dunes. At a test site, the prevailing direction of the wind did not change noticeably. However, the velocity did change. Sixty wind speed readings gave an average velocity of = 1075 Based on long-term experience, o can be assumed to be 265 cm/sec. (a) Find a 95% confidence interval for the population mean wind speed at this site. (b) Does the confidence interval indicate that the population mean wind speed is such that the sand is always moving at this site? Explain.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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Transcribed Image Text:#22 Ecology: Sand Dunes At wind speeds above 1000 centimeters per second (cm/sec),
significant sand-moving events begin to occur. Wind speeds below 1000 cm/sec deposit sand,
and wind speeds above 1000 cm/sec move sand to new locations. The cyclic nature of wind and
moving sand determines the shape and location of large dunes. At a test site, the prevailing
direction of the wind did not change noticeably. However, the velocity did change. Sixty wind
speed readings gave an average velocity of = 1075 Based on long-term experience, o can
be assumed to be 265 cm/sec.
(a) Find a 95% confidence interval for the population mean wind speed at this site.
(b) Does the confidence interval indicate that the population mean wind speed is such that
the sand is always moving at this site? Explain.
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