Pupu Team angle of the fractures in the San Andreas fault is less than 42 degree

Question

Pupu Team angle of the fractures in the San Andreas fault is less than 42 degrees. Based on your work above, do you agree with the claim? Explain and defend your answer Problem2 At wind speeds above 1000 cm/sec significant sand-moving events begin to occur. In particular, 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 sand dunes. At one test site, the prevailing direction of the wind did not change. However, the speed did change. Sixty wind speed readings gave an average speed of 1075 cm/sec. From long term experience, it can be 1. Compute and interpret a 95% confidence interval for the parameter of interest.

Explanation / Answer

here std error =std deviation/(n)1/2 =265/(60)1/2 =34.211

also for 95% CI, z=1.96

hence Confidence interval =mean +/- z*std error =1007.947 ; 1142.053

above interval gives 95% probabilty to contain true mean speed of wind

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