Aresearcher randomly selects and measures the volumes of the contents of 1212 bottles of cough syrup. assume the sample is taken from a normally distributed population. the 9090% confidence interval for the population standard deviation sigmaσ is (0.02490.0249,0.04420.0442). the population standard deviation of the volumes of the bottles' contents should be less than 0.0410.041 fluid ounce. does the confidence interval for sigmaσ suggest that the variation in the volumes of the bottles' contents is at an acceptable level? explain your reasoning.

Graph the equation. select integers for x

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

What is the value for this expression? 2e-5