I have a mean of 800 dollars and standard deviation of 50 dollars. Whats the first quartile
I have a mean of 800 dollars and standard deviation of 50 dollars. Whats the first...
QUESTION 5 Tires are found to have a mean life of 800 hours. The standard deviation is 50. A sample of 100 is chosen. Find the probability that 40 800 < x < 812
Assume that adults have IQ scores that are normally distributed with a mean of 101.2 and a standard deviation 16.4. Find the first quartile Q, which is the IQ score separating the bottom 25% from the top 75%. The first quartile is _______
Assume that adults have IQ scores that are normally distributed with a mean of 100.5 and a standard deviation 16. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) The first quartile is _______
Light bulbs are found to have a mean life of 800 hours. The standard deviation is 160. A sample of 400 is chosen. Find the probability that 798 < x < 802
QUESTION 11 Light bulbs are found to have a mean life of 800. The standard deviation is 160. A sample of 400 is chosen. Find the probability that 810 < X
In a survey of first graders, their mean height was 50.4 inches with a standard deviation of 3.55 inches. Assuming the heights are normally distributed, what height represents the first quartile of these students? 48.01 inches 46.84 inches 43.30 inches 52.79 inches
In a survey of first graders, their mean height was 49.9 inches with a standard deviation of 3.15 inches. Assuming the heights are normally distributed, what height represents the first quartile of these students? 46.75 inches 47.77 inches 52.02 inches 43.60 inches
Suppose X is normally distributed with mean μ and standard deviation σ. Then the first quartile for X is given by: A.) 0.25(x-u)/o B.) u-0.675o C.) 0.5u D.) u-0.25o
table 2.73 calculate the mean median standard deviation the first quartile the third quartile and the Iqr round to one decimal place 95. 75% of all years have an FTES: a. at or below: b. at or above: 96. The population standard deviation = 97. What percent of the FTES were from 528.5 to 1447.5? How do you know? 98. What is the IQR? What does the IQR represent? 99. How many standard deviations away from the mean is the...
Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of 20 dollars. If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 267 dollars and 269 dollars. 0.5517 0.2119 0.2881 0.7881