The length of time in years it took a random sample of 30 former smokers to quit smoking permanently are listed below. At a= 0.08 is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 15 years? Using critical values. 15,13,22,13 10 18 14 7 17 8 22 12 19 14 16 10 32 15 18 12 18 22 7 8 20 7 12 10 9 10

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints