The distribution of mass for United States pennies minted since 1982 is approximately normal with mean 2.5 grams. A random sample of 10 pennies minted since 1982 was selected. The sample had a mean mass of 2.47 grams and a standard deviation of 0.04 gram. The test statistic for the population mean has which of the following distributions?

Sheri likes to study in the school library, but it is usually full of chatting students. it's a great place to study because her friends can always drop by when they want to talk to her. sheri should seek a new study space with a. more light c. less distractions b. less people d. more access to a restroom select the best answer from the choices provided a b c d

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You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii