Find the sample standard deviation. Round to the nearest tenth 15 42 53 7 9 12 14 28 47 O A. 15.8 B. 29.1 C. 17.8 D. 16.6

Part d, e and f

This lést: 14 pts possiE Question Help Four siblings are 1, 3, 8, and 9 years of age. Complete parts (a) through (e) below. (Round to the nearest tenth as needed.) d. Without doing any calculation, indicate whether the standard deviation of the ages in 15 years will be larger, smaller, or the same as the standard deviation of their current ages. Choose the correct answer below. O A. The standard deviation will be larger. O B. The standard deviation will be smaller. O C. The standard deviation will be the same. O D. The standard deviation cannot be approximated without calculations. Check your answer by calculating the standard deviation in 15 years. years (Round to the nearest tenth as needed.) e. Adding 15 years to each of the siblings' ages had different effects on the mean and the standard deviation. Why did one of these values change while the other remained unchanged? How does adding the same value to each number in a data set affect the mean and standard deviation? Choose the…

28 The scores on a mathematics exam have a mean of 66 and a standard deviation of 6. Find the​ x-value that corresponds to the​ z-score −2.33. Round the answer to the nearest tenth.         A. 63.7   B. 80.0   C. 52.0   D. 60.0

Part d, e and f please

Guanbary Find the range and standard deviation for the data Items In the histogram below. +5 4. 3. Data Round the standard devlation to two decimal places if needed. The standard devlation is Submit Questlon Finat for PSY101..pptx BL 9.

80 84 94 65 72 55 84 99 86 87 For this population answer the following 6 questions. 1. Find U=. 2. Find O - %3D 3. Find the standard deviation = 4. Find the Z-score of 75. 5. How many standard deviations from the mean is the score of 62? 6. What score represents a Z-score of -2 for this popuiation? shows thos ve

Calculate the standard deviation of the data shown.

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