Cross stitch is a needlecraft that merges sewing and embroidery using x- shaped stitches to form a pattern. According to a crafter at Malaysia art exhibition, a large (2 x 2 meters) cross stitch typically takes at least 31 months to stitch. The average amount of time spent by a group of 16 cross stitch crafters to complete one was 25 months, with a standard deviation of 7.2 months.

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The weight of a baby African elephant is normally distributed with a mean of 234 pounds and a standard deviation of 34 pounds. Use the applet we used in class and make sure to include a screenshot here: https://homepage.divms.uiowa.edu/~mbognar/applets/normal.html a. Find the maximum weight of the baby elephant that is in the lower 10% of the distribution. Round to the nearest whole number. b. Find the weight of the baby elephants if the probability between the two weights represents the middle 50% of the distribution. Round to the nearest whole number.

A luxury furniture manufacture will make custom furniture for their customers. Pricing is based on the number of hours of skilled labor it takes to make a piece. The time it takes to make a custom couch is normally distributed with an average of 280 hours and a standard deviation of 40 hours.     What percent of custom couches take 255 hours or less to make?        How long would it take to build a couch that is in the 95th percentile?

The US mean height for adult men is  = 68.5 inches, with a standard deviation of  = 3 inches. The mean height for adult women is  = 62.7 inches, with a standard deviation of  = 2.7 inches. Who is taller relative to their gender, a man 75 inches tall, or a woman 68 inches tall?

The University of Georgia has several football players participating in the NFL draft this season. A few former coaches are helping the players prepare for the NFL tryout by tracking their practice performance. One coach calculates the athlete's speed in feet per second each round and then finds the mean and standard deviation for all rounds. Since the workout tested at the NFL tryout is the 40 yard dash, the coach decides to convert these speeds to yards per second instead of feet per second, where 1 yard is equal to 3 feet. Which of the following best describes what would happen to the summary statistics for the athletes? (A) The mean would increase, but the standard deviation would remain the same. (B) Both the mean and standard deviation would remain the same. (C) Both the mean and standard deviation would decrease. (D) The mean would decrease, but the standard deviation would remain the same. (E) The mean would decrease, but the standard deviation would increase.