Empirical rule for 68 is,
(Mean - std) and (mean + std)
(17 - 3) and (17 + 3)
14 and 20
So,
ANS , for 68 % is
14 to 20
For a normal distrib ton curve with a mean o 17and a standard devation of 3,...
Considering the properties of the normal curve, if we know the mean and standard deviation, we are then able to calculate the ______ under the curve between any score and the mean. (0.25 Points) Range Area Mean Mode
11) (2 marks) The graph of a normal curve is given on the right. a) Use the graph to find the values of mean and the standard n: Standard Deviation: Use the empirical rule to find the probability that the x value b) will be between -11 and -5.
11) (2 marks) The graph of a normal curve is given on the right. a) Use the graph to find the values of mean and the standard n: Standard Deviation: Use...
1. For a normal curve whose mean is 5 with a standard deviation of 1.1 find the x-value with 73% of the data to the left of it. 5 %.67 b) 0.61 C) 0.73 d) answer not here 2. The marks on a statistic test are normally distributed with a mean of 62 and a standard deviation of 15. If the instructor wishes to assign B's or higher to the top 30% of the students in the class, what mark...
The area to the left of the mean on a standard normal distribution curve will always be _________ because the curve is symmetrical. Select one: a. 95% b. 50% c. 100% d. 68%
Suppose X is a normal random variable with mean u = 50 and standard deviation o = 11. (a) Compute the z-value corresponding to X = 36. (b) Suppose the area under the standard normal curve to the left of the Z-value found in part (a) is 0.1016. What is the area under the normal curve to the left of X = 36? (c) What is the area under the normal curve to the right of X = 36? (a)...
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...
Find the area under the standard normal curve within 1.98 standard deviations from the mean. Round to four decimal places.
What is normal? Can you think of where you see the normal distribution in your day to day life? Suppose we collect data on the height of all of us in this class. What would the graph look like? Would it be bell-shaped? The normal distribution is vital to statistical analysis, being fully defined by the mean and standard deviation. All normal curves have the same general shape. 68% of the total area under the curve is from +1 to...
(a) Place the flags one standard deviation on either sid of the mean. What is the area between these two values What does the 68-95-99.7 rule say this area is? (b) Repeat for locations two and three standard deviations on either side of the mean. Again compare t 68-95-99.7 rule with the area given by the applet. 1.118 Find some proportions. Using either Table A or your calculator or software, find the proportion of observations from a standard Normal distribution...
12
Find the percent of area under a normal curve between the mean and - 1.12 standard deviations from the mean. (Note that positive indicates above the mean, while negative indicates below the mean.) Click here to see page 1 of the table for areas under the standard normal curve Click here to see page 2 of the table for areas under the standard normal curve. %. The percentage of area under a normal curve between the mean and -1.12...