Identify where the expected value is closed to in a statistical distribution a. To the max point b. To the left c, to the center d. To the min point
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Identify where the
a. To the max point
b. To the left
c, to the center
d. To the min point
Introduction:
It is required to identify the correct option.
Step by step
Solved in 2 steps
- Assume that final exam scores in a given course are approximately normally distributed with a mean of 75 and a standard deviation of 10 points. In a class of 200 students, how many would you expect to fail the exam (i.e., score less than 60) (note: scores can only be approximately normally distributed, because the minimum score is 0, but this should not alter the answer, given how large the mean is relative to the standard deviation).J 1Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The mean price of photo printers on a website is $229 with a standard deviation of $63. Random samples of size 24 are drawn from this population and the mean of each sample is determined. The mean of the distribution of sample means is
- Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0.42. ← 2 Sketch the region. Choose the correct graph below. OA. R F2 W S X H The probability is (Round to four decimal places as needed.). ommand 0.42 #3 80 F3 E Q D Ľ $ 4 C F4 R F 25 % V B. e F5 T G 0.42 I 6 MacBook Air B Fo Q Q Y H & 7 0 √ F7 U B N O C. 8 V -0.42 0.42 DII - M 1, (1) More ( 9 C K DD F9 O V - ) 0 L F10 P command OD. Time Remaining: 00:18:04 Next ^. ^ -0.42 - - ... I 4 F11 { + "1 [ option = ? 1 I F12 } ] delete LThe table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at an awards ceremony. The distributions of the ages are approximately bell-shaped. Compare the z-scores for the actors in the following situation. Best actor Best supporting actor u= 41.0 u=55.0 Q= 7.7 Q= 12 In a particular year, the Best Actor was 44 years old and the best supporting actor was 42 years old. Determine the z-scores for each. best actor z=____________ best supporting actor z=___________ Round to two decimal places as needed.Provide an appropriate response. 5) Find the area of the shaded region. The graph depicts IQ scores of adults, and those scores 5) are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Assume that X has a normal distribution, and find the indicated probability. 6) The mean is µ = 137.0 and the standard deviation is a = 5.3. Find the probability that X is between 134.4 and 140.1. 6) 1 7) 7) The mean is µ = 60.0 and the standard deviation is o = 4.0. Find the probability that X is less than 53.0. 8) 8) The weekly salaries of teachers in one state are normally distributed with a mean of $490 and a standard deviation of $45. What is the probability that a randomly selected teacher earns more than $525 a week?
- Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find the probability of obtaining a reading less than -0.24 C. Shade: Left of a value Click and drag the arrows to adjust the values. -3 -2 0. 1. 2 -1.5 0.24 C) P(Z 0.24) P(r< Submit Question prime video huluQ) Fit the curve of the form y = ab* to the following data, then find the standard deviation. 3 4 5 7 1.8 2.5 3.6 4.7 6.6R3
- Find the m.g.f of uniform distribution and hence find its mean and variance.Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The mean price of photo printers on a website is $227 with a standard deviation of $69. Random samples of size 31 are drawn from this population and the mean of each sample is determined. The mean of the distribution of sample means is nothing.Solve for C) answer b was wrong