Question

Tests by an independent auditing firm show that 50% of students in a certain school think that Algebra is the best course they have ever taken. Use the entire line of random numbers below to estimate the probability that a randomly selected group of five students will contain at least 3 Algebra lovers. Let the digits 1-5 represent a student who thinks that Algebra is the best course.

12024 55976 61475 70726 25408 62279 71874 03499 92659 26041

Convert your probability answer to a whole number representing a percent.

Answer 1

@ybarrap

Answer 2

help @primeralph

Answer 3

I really have to do this quickly so can u help me please

Answer 4

how many numbers are there?

Answer 5

how many of them are from 1-5 ?

Answer 6

nvm I think the answer is 46 cuz I already submitted it...

Answer 7

but have a new question. CAN u PLEASE help me solve that

Answer 8

@amistre64 @ybarrap

Answer 9

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an IQ of 140, what percent of the population has a lower IQ?

Answer 10

what means do you have at your disposal to solve this?

Answer 11

stat program?, a ti83?, z tables?

Answer 12

ti84

Answer 13

good, thats easiest :)

Answer 14

2nd, VARS, normalcdf

Answer 15

ok then?

Answer 16

input the informaton:

normalcdf( low, high, mean, sd)

since low is not given, use a large negative: -9999
the high is given as140
the mean is 100
the sd is 15

Answer 17

?? so inside the parentheses what order do I put it in as?

Answer 18

140 comma 100 comma 15 ?

Answer 19

almost ... you forgot the low first, try

-9999 comma 140 comma 100 comma 15

Answer 20

ok I got .99616 which is 99.6%. that's an option and that happened to be my guess as well

Answer 21

:) good job

Answer 22

thank u

Answer 23

OMG I did really bad on a computer-scored test!!!!! help!