Q tests are made to have an average score of 100. Psychologists revise the test every few years in order to maintain 100 as the average with a bell-shaped distribution. Most people (about 68 percent) have an IQ between 80 and 120.  What is the probability of having an IQ score greater than 135?

Please answer within 30min thanks.

Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. u = 23 and o = 7; n = 72; ī = 22

The top 16 winning scores for NFL games are listed below. Find the mean score.   Video Tutorial: How to find the mean on a TI-84   72 54 52 54 70 51 56 58 58 52 51 63 51 48 52 61     A. 54   B. 57.1   C. 63.2   D. 56.4

Find the mean for the recorded exam scores (in points) from a statistics exam. Round the answer to one decimal place. 36 34 92 60 55 79 74 30 Mean = 21 39 11 64 88 67 53

Compare the distributions of scores. How are students distributed across the range of scores? Are the scores higher in math or verbal ability? Can you please show details and formula?   Math Test 67 45 68 70 72 85 90 99 50 73 77 78 52 66 89 75   Verbal Test 89 90 78 77 75 70 56 60 77 78 80 92 98 72 77 82

Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?

According to National Testing data, college math class testing times are normally distributed with a mean of 54 minutes and standard deviation 7 minutes. The bell curve below represents the probability distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the three indicated boxes. l = 54 o = 7

Create a probability distribution table for your data. Data: 0.20,  0.20,  0.46,  0.46,  2.10,  2.10,  5.50,  11.80,  12.20,  12.20,  13.22,  14.65,  16.07,  17.49,  18.91,  20.33,  20.50,  20.50,  21.75,  23.18

Claim: The proportion of children who play sports is less than 55%. Sample statistics include n = 1,320 subjects with 33% saying that they play a sport. Find the value of the test statistic.  Round your answer to two decimal places, if needed.