1.

Assume that a randomly selected subject is given a bone density test. Those test scores are normallyr distnhuted with a mean of 0 and a standard deviation of 1. Draw a graph and find the bone density test scores that can he used as cuto values separating the lowest 8% and highest 8%, indicating levels that are too low or too high, respectively. Sketch the region. Choose the correct graph below. OA- QB. 00. 0o. '3" a '3" a El '51 Q Q e rs a a z.. 2., 2., a. s: The bone density scores are :I. (Use a comma to separate answers as needed. Round to two decimal places as needed.) '2 u: 2!: The overhead reach distances of adult females are normally distributed 1.Iiiith a mean of 195 cm and a standard deviation of 8.6 cm. 3. Find the probability that an individual distance is greater than 20150 cm. b. Find the probability that the mean for 15 randomlyI selected distances is greater than 192.80 cm. c. Why,r can the normal distribution be used in part (b), even though the sample size does not exceed 30? 'E) a. The probability is D (ROUI'ICI to tour decimal places 85 needed.) b. The probability is D. (Round to four decimal places as needed.) 0. Choose the correct answer below. 0 A. The normal distribution can be used because the probability is less than 0.5 O B. The normal distribution can be used because the original population has a normal distribution. 0 C. The normal distribution can be USEU because the nite population correction [HEIDI is small. 0 D. The normal distribution can be used because the mean is large. Assume that a randomly,r selected subject is given a bone density:r test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Find the probabilityI that a given score is less than 1.3? and draw.r a sketch of the region. Sketch the region. Choose the correct graph below. OA. @3. Do. On. '31 a 3L '31 Q EL Q Q IL" l3' I3 IZ' 1.3? 4.3? 4.3? 4.3? 1.3? The probability is D. [Round to four decimal places as needed.) The accompanying table describes results from groups of B births from 5 different sets of parents. The random variable x represents the number of girls among 5 children. Complete parts {a} through {d} below. a Click the icon to yielltr the table. a. Find the probability of getting exactly 6 girls in a births. |:| {Type an integer or a decimal. Do not round.) b. Find the probability of getting 6 or more girls in a births. |:| (Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining whether 6 is a signicantly high number of girls in B births: the result from part {a} or part (b)? O A. The result from part 3, since it is the exact probability being asked. 0 B. The result from part b, since it is the complement of the result of part a. O c. The result from part b, since it is the probability of the given or more extreme result. 0 D. The result from part a, since it less than the probability of the given or more extreme result. d. Is 5 a signicantly high number of gins in 8 births? Why orwhy not? Use 0.05 as the threshold fora signicant event. 0 A. Yes, since the appropriate probability is less than 0.05, it is a signicantly high number. 0 B. No, since the appropriate probability is less than 0.05, it is not a signicantly high number. 0 0. Yes, since the appropriate probability is greater than 0.05, it is a signicantly high number. 0 D. No, since the appropriate probability is greater than 0.05, it is not a signicantly high number. Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randome selected from those included in the table. Drive-thru Restaurant I; D Order Accurate 130 Order Hot Accurate 3? 6E] 31 15 If three different orders are selected, find the probability that they are all from Restaurant D. The probability is D. {Round to four decimal places as needed.)