QUESTION 5 The total area under the Z distribution curve is equal to: a. 10 b. -1 c. Not enough information to say d. 1
For any probability distribution, the probability of any x-value occurring within any given range is equal to the area under the distribution and above that range. True False
1. a) About ____ % of the area under the curve of the standard normal distribution is between z=−0.409z=-0.409 and z=0.409z=0.409 (or within 0.409 standard deviations of the mean). b) About ____ % of the area under the curve of the standard normal distribution is outside the interval z=[−0.78,0.78]z=[-0.78,0.78] (or beyond 0.78 standard deviations of the mean). c) About ____ % of the area under the curve of the standard normal distribution is outside the interval z=−0.86z=-0.86 and z=0.86z=0.86 (or...
The area under a standard normal distribution is ___ and the area to the left of a Z score of -1 is _____. Group of answer choices .5, .841 1, .158 0, 1 1, .841
1. Under any normal distribution of scores, what percentage of the total area falls A. between the mean (μ) and a score value that lies one standard deviation (1σ) above the mean? B. between a score value that lies one standard deviation below the mean and a score value that lies one standard deviation above the mean? C. between the mean and a score value that lies +2σ above the mean? D. between a score value that lies −2σ below...
Respond True or False to each of these statements. The total area under the normal distribution is equal to 1. As the sample size increases, the distribution of the sample statistics becomes more consistent. Sampling variability refer to a variability of parameters. A sampling distribution describes a distribution of sample statistics. All variables that are approximately normally distributed can be transformed to standard z-scores. The z-value corresponding to a datum below the mean is always negative. The area under the...
Work is force times distance. Why is the area under the plot of data on the graph equal to the work done?
Previous Next Question 4 of 19 (1 point) 6.1 Section Exercise 14 Find the area under the standard normal distribution curve to the left of z-0.79.Use Table E and enter the answer to 4 decimal places. The area to the left of the z value is O C 5 6 7 8 9 0 7
Which of the following is true about the distribution of IQ scores? 1)The area under its bell-shaped curve is 10. 2) It is a nonstandard normal distribution. 3) Its distribution is skewed to the right. 4) Its distribution is skewed to the left.
Use the tables for finding area under a normal curve!
Question 9 3 pts Household incomes in a certain state have mean $53,550 and a standard deviation $3,750 and the incomes follow a normal distribution. A randomly selected household from this state has an income of $58,050. The approximate percentile ranking for household income for this household is o 11.5% o 84.6% o 38.5% o 88.5%