has at distribution. 2 d(X₁ + X₂ + X₂) (X₂² + X₂² + X² + X₂²) ¹/²
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- Ria wants to know if there is a specific difference between the average monthly hair growth using Shampoo A vs Shampoo B. She recruited 8 participants and compared their average monthly hair growth (in centimeters) using two different brands. Her data is assumed to be normally distributed which produced the following values:please help!Find the standard deviation for the group of data items (Round to two decimal places as needed.) Stems Leaves 2 6 7 7 6 5 6 3 1 3 1 3The following figure shows the standard normal curve and two t-curves. Which of the two t-curves has the larger degrees of freedom? Explain your answer.
- Which of the following indicate why you should transform a set of raw scores into a set of Z scores? Check all that apply. To make it possible to compare scores from two or more different distributions To make all the transformed scores greater than 0 To be able to describe the location of a raw score in the distribution of raw scores To make sure the Z scores are normally distributedFor the residents in 2014, use R to calculate the interval with 99% certainty that the interval contains the actual population mean of the residents by census tracts. Type in the interval with keyboard. We also know that in each year, the number of residents by census tract in the State of Maryland follows a normal distribution, and the variance in the number of residents within the State of Maryland is the same for different years. POP2014: 3072, 1989, 3794, 2689, 3211, 3722, 4385, 4009, 7598, 3862, 3097, 2726, 4881, 4157, 2570, 2512, 2518, 4863, 4147, 7139, 6067, 6819, 3705, 3239, 3824, 4977, 2576, 2940, 9791, 5231, 5634, 5337, 4205, 3888, 5562, 3335, 3770, 1808, 2045, 1532, 5420, 4993, 6109, 4377, 5424, 4976, 4507, 3738, 2827, 3485, 1559, 5199, 4702, 3971, 3803, 3356, 4670, 3816, 5477, 4760, 3126, 3630, 3755, 3795, 2578, 3382, 4005, 2442, 6096, 3799, 3843, 3836, 6046, 6431, 3561, 3142, 4829, 5058, 2471, 6119, 3523, 3094, 3146, 3356, 2618, 2366, 4266, 4016, 6080, 1554, 6878, 3645,…Don't do it wrong. I will rate accordingly. I need correct answer please.