Mathematics, 27.03.2021 01:50 Ahhskii
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 116 and a standard deviation of 14. Suppose one individual is randomly chosen. Let X = IQ of an individual.
a. What is the distribution of X? X ~ N(
,
)
b. Find the probability that a randomly selected person's IQ is over 102.
Round your answer to 4 decimal places.
c. A school offers special services for all children in the bottom 3% for IQ scores. What is the highest IQ score a child can have and still receive special services?
Round your answer to 2 decimal places.
d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.
Q1:
Q3:
IQR:
Answers: 1
Mathematics, 21.06.2019 19:30
Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
Mathematics, 21.06.2019 20:30
Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.
Answers: 3
Mathematics, 22.06.2019 03:20
Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475
Answers: 1
Mathematics, 22.06.2019 04:30
Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?
Answers: 2
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of...
Mathematics, 27.02.2021 06:40
Physics, 27.02.2021 06:40
Biology, 27.02.2021 06:40
Mathematics, 27.02.2021 06:40
Social Studies, 27.02.2021 06:40
Biology, 27.02.2021 06:40