A normal distribution has ? = 28 and ? = 5. (a) Find the z score corresponding to  x = 23. (b) Find the z score corresponding to  x = 42. (c) Find the raw score corresponding to  z = −3. (d) Find the raw score corresponding to  z = 1.7.

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Miswrote P(x) 0.041 for 0.141, which changes the mean to 1.5.

Find the area of the shaded region. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15.         A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, one on the left side and one on the right side. The region between the lines is shaded. Moving from left to right, the x-axis below the first line is labeled 75. The x-axis below the second line is labeled 110.

A normal distribution has u = 24 and o = 5. (a) Find the z score corresponding to x = 19. (b) Find the z score corresponding to x = 35. (c) Find the raw score corresponding to z = -3. (d) Find the raw score corresponding to z = 1.1.

Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table, Click to view page 2 of the table. Step 1 теan(u) s tan dard o 90 115 The area of the shaded region is (Round to four decimal places as needed.) Step 2 Required pr X-µ = P = P (Z < 1 = P (Z < 2 = 0.9773 Enter your answer in the answer box and then click Check Answer. %3D All parts showing Clear All Final Check P Type here to search hp

Use the formula to find the standard error of the distribution of differences in sample means, I – X2. Samples of size 270 from Population 1 with mean 74 and standard deviation 18 and samples of size 510 from Population 2 with mean 88 and standard deviation 24 Round your answer for the standard error to two decimal places. standard error =

A population of N = 8 scores has a mean of M = 10.  After one score is removed, the mean is found to be M = 5  What is the value of the score that was added? A   X = 45 B   X = 35 C   X = 50 D   X = 80

A normal distribution has u = 32 and o = 5. (a) Find the z score corresponding to x = 27. (b) Find the z score corresponding to x = 43. (c) Find the raw score corresponding to z = 2. (d) Find the raw score corresponding to z = l.5.

A Biomedical engineer is measuring how much current is needed to stimulate the nerve of a rat to create a muscle function. He is measuring 5 rats and wants to evaluate if less current is needed to stimulate a young animal compared to an old animal. The mean of the current to stimulate young animals is 4.6mA. Meuasrements from trials on Old Rats: 6, 6, 12, 7, 8 (in mA) Can the engineer conclude that old rats need more current?